Re: [Samba] Performance issues: have eliminated disk and network as cause
Just been told the config file didn't appear in the email as it went out (even though it certainly appears in the copy I've got), so I'm attaching inline this time. Oh, BTW: it's version 3.4.7 on Debian Lenny, installed from backports. [global] workgroup = U4EATECH netbios name = tiamat enable privileges = yes server string = Primary Domain Controller %v security = user local master = no os level = 33 domain master = no preferred master = no encrypt passwords = true null passwords = no hide unreadable = yes hide dot files = yes obey pam restrictions = Yes unix password sync = Yes remote browse sync = 172.30.20.109 172.30.20.130 172.27.0.6 enhanced browsing = yes passwd program = /usr/sbin/smbldap-passwd %u passwd chat = Changing UNIX and samba passwords for*\nNew password* %n\n *Retype new password* %n\n ldap passwd sync = Yes log level = 0 syslog = 1 log file = /var/log/samba/log.%m max log size = 1000 read raw = yes write raw = yes kernel oplocks = yes max xmit = 65535 dead time = 15 use sendfile = yes socket options = TCP_NODELAY SO_KEEPALIVE IPTOS_LOWDELAY getwd cache = yes mangling method = hash2 Dos charset = 850 Unix charset = ISO8859-1 logon script = logon.bat logon path = logon home = \\atlas\%U logon drive = H: domain logons = Yes wins server = 172.30.20.109 #name resolve order = hosts bcast name resolve order = wins lmhosts hosts bcast dns proxy = yes time server = yes passdb backend = ldapsam:ldap://ldap.u4eatech.com/ ldap:// ldap-slave.u4eatech.com ldap admin dn = cn=smbadmin,dc=u4eatech,dc=com ldap suffix = dc=u4eatech,dc=com ldap group suffix = ou=Group ldap user suffix = ou=People ldap machine suffix = ou=Hosts ldap idmap suffix = ou=People ldap ssl = no add user script = /usr/sbin/smbldap-useradd -m %u ldap delete dn = Yes delete user script = /usr/sbin/smbldap-userdel %u add machine script = /usr/sbin/smbldap-useradd -w %u add group script = /usr/sbin/smbldap-groupadd -p %g delete group script = /usr/sbin/smbldap-groupdel %g add user to group script = /usr/sbin/smbldap-groupmod -m %u %g delete user from group script = /usr/sbin/smbldap-groupmod -x %u %g set primary group script = /usr/sbin/smbldap-usermod -g %g %u load printers = no create mask = 0640 directory mask = 0750 nt acl support = Yes guest account = nobody dont descend = /proc,/dev,/etc,/lib,/lost+found,/initrd #show add printer wizard = yes ; to maintain capital letters in shortcuts in any of the profile folders: preserve case = yes short preserve case = yes case sensitive = no [netlogon] path = /home/samba/netlogon guest ok = yes browseable = No read only = no [wpkg] path = /home/samba/wpkg read only = yes guest ok = yes browseable = no [homes] comment = Home Directories browseable = yes writable = yes oplocks = yes GOS Networks Limited, 1 Friary, Temple Quay, Bristol, BS1 6EA, UK. Registered company number: 6917663 The information in this email is confidential and may be legally privileged. It is intended solely for the addressee. Access to this email by anyone else is unauthorised. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is prohibited and may be unlawful. When addressed to our clients any opinions or advice contained in this email are subject to the terms and conditions expressed in the governing GOS Networks agreement. -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/options/samba
[Samba] Performance issues: have eliminated disk and network as cause
Hi, I'm not entirely happy with the performance I'm seeing using Samba, and I wonder if anyone can shine any light. The server is a Dell PowerEdge 2950 with hardware RAID10, 4GB RAM and a quad-core Intel Xeon processor. It's not live yet, so there's no load from other tasks. I've already eliminated the RAID (able to sustain 130-140MB/s for reads/writes) and the network (GigE, tar | nc to this server and untar'd at the other end sustains 8-900Mbps) as bottlenecks, which leaves me dealing with Samba. Samba is peaking at around 280Mbps (reading and writing a single 500MB file) and normal performance (which I have benchmarked with a 350MB directory containing about 1,000 files of various sizes up to 2MB) is closer to 90-100Mbps (write), 117Mbps (read). This is with a Windows XP client, using smbmount from a Linux client is not appreciably faster. Obviously there's going to be a much larger overhead associated with SMB versus netcat, but 3.5-8 times slower? I have attached my smb.conf (though I have removed most of the shares for brevity's sake), in the hope that someone can help. James. GOS Networks Limited, 1 Friary, Temple Quay, Bristol, BS1 6EA, UK. Registered company number: 6917663 The information in this email is confidential and may be legally privileged. It is intended solely for the addressee. Access to this email by anyone else is unauthorised. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is prohibited and may be unlawful. When addressed to our clients any opinions or advice contained in this email are subject to the terms and conditions expressed in the governing GOS Networks agreement. -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/options/samba
[Samba] Performance issues after samba update (utime?)
Hi all, We're experiencing performance issues after migrating from 3.0.8 to 3.0.28. Write performance has degraded about 30%, regardless of the size of file being copied. (tests described below are a single 150Mb file copy from an XP explorer) The setup is somewhat peculiar as the server is mounting NFS shares (v3) and exporting these. smb.conf hasn't changed, save for the addition of msdfs root = no Comparing smbd truss output between these version shows a likely culprit : 3.0.28 is doing lots of utime() calls, and these take a long time on an NFS share. Someone seems to have encountered this issue before : http://readlist.com/lists/lists.samba.org/samba/3/16790.html But I see no followups to this. Any way to fall back to the old behavior, with less utime calls ? Failing that I'd be happy to get any recommandations you guys might have in order to mitigate the issue (or tell me that this is a red herring and I should look elsewhere :-) ) A few details on the environment : solaris 10, nfs v3 with mount options set to hard,tcp,rsize=4096,wsize=4096 Cheers -- Alex -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/listinfo/samba
Re: [Samba] Performance issues
Thank you both for your replies. I can't guarantee that this will solve your problem, but since you mention that you've replaced a server, there's a good chance that there are some stale invalid shortcuts lying around. It could be that Windows periodically is going out there looking for these nonexistent shares, and in the process interrupts your connection. Hey, it's worth a shot. I'll give it a try. That makes sense and won't take much time to test. Appreciate it, -Ryan -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/listinfo/samba
[Samba] Performance issues
List, I apologize for the newbie nature of this post; I am sure there is an easy answer somewhere, but I've tried all the search terms I can think up and can't find it. I have some video archived on a White Box 4 machine. I watch it on a Windows XP box in the other room by mapping a drive to a Samba share. Seemingly at random, my video stream will halt due to an inability to receive data from the server. If I pause for a few seconds and resume, everything is usually fine. This generally happens only once or twice per hour, but it's annoying. The video is not huge. We're talking ~350MB xvid files, 45 minutes each (compressed network TV shows). The Samba server used to be a Windows 2000 Server and the same video files worked perfectly from there. Network is gigabit on the server side, 100mbit on the client side - though even wireless should be able to stream these files. Virtually no traffic on the network (just my computers and they mostly sit idle unless I'm using them). I saw this problem again last night when copying ~10GB worth of files from another XP box to the Samba share. The copy stopped a couple of times, telling me the network path no longer existed, but after clicking OK I could still browse the share just fine. It's like an intermittant, very temporary glitch. Stats: White Box Linux 4 (kernel 2.6.9-5) Samba 3.0.10-1.4E Relevant smb.conf: [global] workgroup = WRIGHT netbios name = SATURN server string = Saturn security = domain idmap uid = 15000-2 idmap gid = 15000-2 winbind use default domain = Yes encrypt passwords = yes password server = jupiter jupiter is a Win2k server PDC. Any advice would be greatly appreciated. -Ryan -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/listinfo/samba
Re: [Samba] Performance issues
On Fri, Oct 07, 2005 at 10:08:33AM -0700, Ryan Wright wrote: List, I apologize for the newbie nature of this post; I am sure there is an easy answer somewhere, but I've tried all the search terms I can think up and can't find it. I have some video archived on a White Box 4 machine. I watch it on a Windows XP box in the other room by mapping a drive to a Samba share. Seemingly at random, my video stream will halt due to an inability to receive data from the server. If I pause for a few seconds and resume, everything is usually fine. This generally happens only once or twice per hour, but it's annoying. The video is not huge. We're talking ~350MB xvid files, 45 minutes each (compressed network TV shows). The Samba server used to be a Windows 2000 Server and the same video files worked perfectly from there. Network is gigabit on the server side, 100mbit on the client side - though even wireless should be able to stream these files. Virtually no traffic on the network (just my computers and they mostly sit idle unless I'm using them). I saw this problem again last night when copying ~10GB worth of files from another XP box to the Samba share. The copy stopped a couple of times, telling me the network path no longer existed, but after clicking OK I could still browse the share just fine. It's like an intermittant, very temporary glitch. This kind of thing is hard to debug. You need to keep very accurate statistics on what is going on on the server over the copying period to be able to debug this. I'd try running vmstat 1 (every second) and capturing the output over the copying period to try and catch this. Jeremy. -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/listinfo/samba
Re: [Samba] Performance issues
I have seen performance issues where a Windows client (Explorer) takes a while to display a file listing on a remote computer, but then it accesses it just fine. Generally speaking, this is the opposite of what you describe, but it could be related. In investigating this, the problem (not the symptom, the actual problem) turned out to be invalid shortcuts to network shares. These invalid shortcuts are left behind from when a server or share once existed on the network but has since been removed. When initially browsing the network, Windows attempts to access all the remote shares it knows about BEFORE displaying any listings, rather than accessing the remote share only if the user requests it. This seems to be especially problematic with Microsoft Word and Excel when opening documents. There are several places to look for these stale or invalid shares: 1. My Network Places -- Open this up, and delete any shortcuts that point to remote servers or shares that no longer exist. It's actually safe to delete ALL of the network shortcuts (named like Someshare on someserver (servername)). Usually these are created automatically. 2. My Computer -- Disconnect (remove) any network drive mappings that point to nonexistent shares or servers. 3. Desktop -- same thing as My Network Places; remove any invalid shortcuts to network shares. I don't think that these cause a problem as described above, but it can't hurt to remove them. 4. Registry -- HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints (MountPoints2 in XP or later) -- there may be subkeys in the form of ##server#share. Delete any keys that point to nonexistent servers or shares. Lastly, if you are using Windows XP or later, disable Automatically search for network folders and printers. To do so, open My Computer, click Tools - Folder Options, View tab, and it's in there. When enabled, Windows will fill up your My Network Places with shortcuts to any network shares it finds, and will fill up your Printers folder with Auto printers. Note that each of these things are on a PER PROFILE basis. You will need to check each Windows user login for these issues. I can't guarantee that this will solve your problem, but since you mention that you've replaced a server, there's a good chance that there are some stale invalid shortcuts lying around. It could be that Windows periodically is going out there looking for these nonexistent shares, and in the process interrupts your connection. Hey, it's worth a shot. --Jonathan Johnson Ryan Wright wrote: List, I apologize for the newbie nature of this post; I am sure there is an easy answer somewhere, but I've tried all the search terms I can think up and can't find it. I have some video archived on a White Box 4 machine. I watch it on a Windows XP box in the other room by mapping a drive to a Samba share. Seemingly at random, my video stream will halt due to an inability to receive data from the server. If I pause for a few seconds and resume, everything is usually fine. This generally happens only once or twice per hour, but it's annoying. The video is not huge. We're talking ~350MB xvid files, 45 minutes each (compressed network TV shows). The Samba server used to be a Windows 2000 Server and the same video files worked perfectly from there. Network is gigabit on the server side, 100mbit on the client side - though even wireless should be able to stream these files. Virtually no traffic on the network (just my computers and they mostly sit idle unless I'm using them). I saw this problem again last night when copying ~10GB worth of files from another XP box to the Samba share. The copy stopped a couple of times, telling me the network path no longer existed, but after clicking OK I could still browse the share just fine. It's like an intermittant, very temporary glitch. Stats: White Box Linux 4 (kernel 2.6.9-5) Samba 3.0.10-1.4E Relevant smb.conf: [global] workgroup = WRIGHT netbios name = SATURN server string = Saturn security = domain idmap uid = 15000-2 idmap gid = 15000-2 winbind use default domain = Yes encrypt passwords = yes password server = jupiter jupiter is a Win2k server PDC. Any advice would be greatly appreciated. -Ryan -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/listinfo/samba
Re: [Samba] Samba performance issues (compared win2k)
El Miércoles, 24 de Noviembre de 2004 11:30, escribió: Are you sure it is samba who is causing delays and not the file system? No, you are right. I will try to change the file system from EXT3 to REISER. What file system are you using? Is the second access to a file as slow as the first? No, the second access seems faster. socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192 IPTOS_LOWDELAY The default values for RCVBUF and SNDBUF are larger, why do you reduce it? I tried playing with different values from 1024 to 65535 and it makes no sensse. The default option of RCVBUF and SNDBUF is 8192 Thanks -- To unsubscribe from this list go to the following URL and read the instructions: http://lists.samba.org/mailman/listinfo/samba
[Samba] Samba performance issues (compared win2k)
We're running samba in our organization to serve files in a LAN to windows machines (almost XP), and we're having some performance issues with small files. With big files (ie, ISO images), it works pretty well. But, when small files are involved in the transference, problems arise. In the same environment, a Windows 2000 machine (the 'old' server) is able to send data to clients nearly at double speed. We've tried to change some parameters to make the performance better but... no way. So, we're looking for any idea or a point to start to search for some additional info. We are using in a Samba-3.0.7-1.3E, Linux AS 3 Update 4 box, with the Red Hat's kernel 2.4.21-15.0.3.ELsmp. Configuration is as follow: # Global parameters [global] workgroup = OURWORKGROUP server string = Software Server interfaces = eth1 auth methods = guest, sam, winbind map to guest = Bad User null passwords = Yes guest account = ouruser passwd program = /usr/bin/passwd %u passwd chat = *New*UNIX*password* %n\n *ReType*new*UNIX*password* %n\n *passwd:*all*authentication*tokens*updated*successfully* username map = /etc/samba/smbusers log file = /var/log/samba/smbd.log max log size = 10240 max xmit = 65535 dns proxy = No wins server = 192.168.10.10 ldap ssl = no create mask = 0775 hosts allow = 127., 192.168. cups options = raw socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192 IPTOS_LOWDELAY -- Isaac Ojeda Llebry Servicio de Informática y Comunicaciones de la ULPGC e-mail: iojeda en becarios.ulpgc.es Teléfono: +34 928 459568 -- To unsubscribe from this list go to the following URL and read the instructions: http://lists.samba.org/mailman/listinfo/samba
Re: [Samba] Samba performance issues (compared win2k)
Isaac Ojeda Llebry wrote: We're running samba in our organization to serve files in a LAN to windows machines (almost XP), and we're having some performance issues with small files. With big files (ie, ISO images), it works pretty well. But, when small files are involved in the transference, problems arise. In the same environment, a Windows 2000 machine (the 'old' server) is able to send data to clients nearly at double speed. We've tried to change some parameters to make the performance better but... no way. So, we're looking for any idea or a point to start to search for some additional info. We are using in a Samba-3.0.7-1.3E, Linux AS 3 Update 4 box, with the Red Hat's kernel 2.4.21-15.0.3.ELsmp. Configuration is as follow: # Global parameters [global] workgroup = OURWORKGROUP server string = Software Server interfaces = eth1 auth methods = guest, sam, winbind map to guest = Bad User null passwords = Yes guest account = ouruser passwd program = /usr/bin/passwd %u passwd chat = *New*UNIX*password* %n\n *ReType*new*UNIX*password* %n\n *passwd:*all*authentication*tokens*updated*successfully* username map = /etc/samba/smbusers log file = /var/log/samba/smbd.log max log size = 10240 max xmit = 65535 dns proxy = No wins server = 192.168.10.10 ldap ssl = no create mask = 0775 hosts allow = 127., 192.168. cups options = raw socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192 IPTOS_LOWDELAY Try: socket options = TCP_NODELAY SO_SNDBUF=65536 SO_RCVBUF=65536 IPTOS_LOWDELAY Have a look at: http://www.drouillard.ca/TipsTricks/Samba/Oplocks.htm -- Regards -- Gerald Drouillard Technology Architect Drouillard Associates, Inc. http://www.Drouillard.ca -- To unsubscribe from this list go to the following URL and read the instructions: http://lists.samba.org/mailman/listinfo/samba
[Samba] Performance Issues
Hi, I've noticed this type of issue has been raised a few times, but I haven't been able to find a solution yet. I'm having transfer performance issues from various clients to my new file server : Server config is : Athlon 3200+ on Nforce 2 Yukon Gb NIC Gentoo with 2.6.9 samba 3.0.7-r1 ebuild 3Ware Escalade 9500S-12 x 2 Clients are XP SP2,2K3 on similar hardware and G5s with OS X 10.3, all with Gb NICs on Cat6, and all of which are transferring like dogs ;( smbmount from server to 2003Server transfers ok, but one directory with ~2500 files appears as empty! Also, my old G4 w/Os X 10.2 is transferring ok also... go figure. # hdapram -t /dev/sda1 /dev/sda1: Timing buffered disk reads: 268 MB in 3.01 seconds = 88.96 MB/sec During transfer smdb reports only 0.7 %cpu or thereabouts. Various changes to the socket options have not yielded any results. Winbind is authenticating ok and I can't see anything in any of the logs which would indicate a catastrophic problem. smb.conf : [global] socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192 netbios name = VAULT workgroup = DOMAIN realm = DOMAIN.LOCAL security = ADS password server = dc.domain.local wins server = dc.domain.local dns proxy = no wins proxy = no encrypt passwords = yes idmap uid = 1-2 winbind enum users = yes winbind gid = 1-2 winbind enum groups = yes winbind separator = + os level = 20 preferred master = no log level = 1 max log size = 50 log file = /var/log/samba/log.%m [vault] comment = Big Thing writeable = yes path = /mnt/vault force user = vaultuser valid users = DOMAIN+Power Users Any help would be greatly appreciated. Sincerely, Simon -- To unsubscribe from this list go to the following URL and read the instructions: http://lists.samba.org/mailman/listinfo/samba
Re: [Samba] Performance Issues with GBit LAN
Dimitar Vassilev wrote: Read the links and adjust your values accordingly. I haven't been able to implement all options, but I have a similar problem on 10/100mbit net with a slack 10/2.6.8 kernel. The tips on netbios over tcp and computer browser were given me by my net admin. The rest I googled and wrote down. Hope it helps. Please tell how it works. Regards, Dimitar Vassilev I adjusted the settings, and i got a plus in performance of 1 MB so i get a download of 9-10 MB now. But not what i expected. Anyway: thanks for your help, it gave me a great insight in the configuration of the samba Server. If i should Cc: you in the following mails, please let me know. Regards, Steffen Timmermann Tom Hibbert wrote: Hi Steffen Looking at the configuration of the server PC, you have a Realtek network card and an unspecified RAID card on a P2 300. I'm guessing that the machine is based on an LX or BX chipset with PC66 or PC100 ram. I looked it up and it's an ASUS P2B-LS Motherboard with the 440BX Chipset. You have 66mhz bandwidth to play with in the PCI bus. You also have 66mhz FSB thanks to the PII 300 CPU. All the benchmarking you have done (both Iperf and hdparm) both test the two subsystems individually, not together. My initial guess is that your PCI bus and/or CPU cannot drive this system at its full potential. Look at the load average on the server during transfer. The average loads are 0.23, 0.22, 0.12 I don't know what it means exactly, but i get them out of top during transfer Secondly you are running Redhat 9 with a Realtek 8169. There were a number of issues with the stock Redhat 9 kernel versus a Realtek 8169, see here http://www.linuxquestions.org/questions/showthread.php?s=threadid=14975 1highlight=8169. In fact these users are reporting only 8-10mb throughput which is exactly what you are describing. I have tested the machine with Suse 8.2 before, but there's the same problem. Maybe because the Kernel version is almost the same? (2.4.20) My advice to you is to roll a custom kernel for your system I have once compiled a new kernel on another machine, but i'm not familiar with it. Please tell me the commands i have to run for this. (optimized for Pentium 2, raid and network drivers built into kernel instead of modules). At the Moment they're both modules [r8169.o (version 2.2 from realtek site) and the raidcontroller (which is an ITE 8212)] Then perform a proper hard disk benchmark using Bonnie++ so you know what the disks are truly capable of (hdparm -t doesn't cut it in this respect). I've done it. Here are the results: On /dev/sda: [EMAIL PROTECTED] bonnie]# ./Bonnie File './Bonnie.1938', size: 104857600 Writing with putc()...done Rewriting...done Writing intelligently...done Reading with getc()...done Reading intelligently...done Seeker 1...Seeker 2...Seeker 3...start 'em...done...done...done... ---Sequential Output ---Sequential Input-- --Random-- -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks--- MachineMB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU 100 2419 99.2 42898 85.5 58114 98.2 2378 99.5 154956 99.9 7765.2 99.0 [EMAIL PROTECTED] bonnie]# On /dev/sdb: [EMAIL PROTECTED] bonnie]# ./Bonnie File './Bonnie.1926', size: 104857600 Writing with putc()...done Rewriting...done Writing intelligently...done Reading with getc()...done Reading intelligently...done Seeker 1...Seeker 2...Seeker 3...start 'em...done...done...done... ---Sequential Output ---Sequential Input-- --Random-- -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks--- MachineMB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU 100 2259 99.6 27232 99.5 60478 93.3 2382 99.6 154711 101.2 7958.0 99.5 [EMAIL PROTECTED] bonnie]# As I see, there is almost 100% CPU Used when the Program reads/writes from/to the Harddisks. In this case, do you think upgrading the System to an 700 Mhz Celeron will bring more Performance? When I want to do so, i must ensure that the data on the RAID isn't lost while transferring the harddisks and the controller to the other PC, because it's too much to transfer on the 2nd PC. (By the Way: Do you know if the Data on the disks is lost when i transfer the raid out of the one machine into another?) Then I would compare the difference between throughput serving from both your SCSI disk (sda) and RAID array with the benchmark data given by bonnie++. This may reveal a CPU or FSB bottleneck. Good luck and thanks Tom Additional information about the System: This is the dmesg output: [EMAIL PROTECTED] root]# dmesg Linux version 2.4.20-8 ([EMAIL PROTECTED]) (gcc version 3.2.2 20030222 (Red Hat Linux 3.2.2-5)) #1 Thu Mar 13 17:54:28 EST 2003 BIOS-provided physical RAM map: BIOS-e820: - 0009f800 (usable) BIOS-e820: 0009f800 - 000a (reserved) BIOS-e820: 000f -
Re: [Samba] Performance Issues with GBit LAN
Now I have built the RAID into the other machine with 700 MHz Celeron and the same GBit card. This Machine has also 384 MB of RAM, so this is upgraded too. The output of Bonnie tested on the Raid looks like: [EMAIL PROTECTED] bonnie]# ./Bonnie File './Bonnie.2324', size: 104857600 Writing with putc()...done Rewriting...done Writing intelligently...done Reading with getc()...done Reading intelligently...done Seeker 1...Seeker 2...Seeker 3...start 'em...done...done...done... ---Sequential Output ---Sequential Input-- --Random-- -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks--- MachineMB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU 100 5084 99.0 47481 96.9 15686 15.0 5079 94.9 48069 23.0 558.3 5.6 [EMAIL PROTECTED] bonnie]# I think, the CPU-Rates are better as before in the old machine. Now the test on the (Now Onboard-IDE) 10 GB Seagate Harddisk /dev/hda/: [EMAIL PROTECTED] bonnie]# ./Bonnie File './Bonnie.2331', size: 104857600 Writing with putc()...done Rewriting...done Writing intelligently...done Reading with getc()...done Reading intelligently...done Seeker 1...Seeker 2...Seeker 3...start 'em...done...done...done... ---Sequential Output ---Sequential Input-- --Random-- -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks--- MachineMB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU 100 4952 98.8 36262 47.8 9078 9.6 4356 87.7 48891 23.4 338.5 3.4 [EMAIL PROTECTED] bonnie]# Here the CPU-Rates are better, too. So this should have been the first bottleneck. The dmesg now looks like: [EMAIL PROTECTED] bonnie]# dmesg Linux version 2.4.20-8 ([EMAIL PROTECTED]) (gcc version 3.2.2 20030222 (Red Hat Linux 3.2.2-5)) #1 Thu Mar 13 17:54:28 EST 2003 BIOS-provided physical RAM map: BIOS-e820: - 0009f800 (usable) BIOS-e820: 0009f800 - 000a (reserved) BIOS-e820: 000f - 0010 (reserved) BIOS-e820: 0010 - 17feb000 (usable) BIOS-e820: 17feb000 - 17fef000 (ACPI data) BIOS-e820: 17fef000 - 17fff000 (reserved) BIOS-e820: 17fff000 - 1800 (ACPI NVS) BIOS-e820: - 0001 (reserved) 0MB HIGHMEM available. 383MB LOWMEM available. On node 0 totalpages: 98283 zone(0): 4096 pages. zone(1): 94187 pages. zone(2): 0 pages. Kernel command line: auto BOOT_IMAGE=linux ro BOOT_FILE=/boot/vmlinuz-2.4.20-8 root=LABEL=/ Initializing CPU#0 Detected 701.604 MHz processor. Console: colour VGA+ 80x25 Calibrating delay loop... 1399.19 BogoMIPS Memory: 381976k/393132k available (1347k kernel code, 8592k reserved, 999k data, 132k init, 0k highmem) Dentry cache hash table entries: 65536 (order: 7, 524288 bytes) Inode cache hash table entries: 32768 (order: 6, 262144 bytes) Mount cache hash table entries: 512 (order: 0, 4096 bytes) Buffer-cache hash table entries: 32768 (order: 5, 131072 bytes) Page-cache hash table entries: 131072 (order: 7, 524288 bytes) CPU: L1 I cache: 16K, L1 D cache: 16K CPU: L2 cache: 128K Intel machine check architecture supported. Intel machine check reporting enabled on CPU#0. CPU: After generic, caps: 0383f9ff CPU: Common caps: 0383f9ff CPU: Intel Celeron (Coppermine) stepping 06 Enabling fast FPU save and restore... done. Enabling unmasked SIMD FPU exception support... done. Checking 'hlt' instruction... OK. POSIX conformance testing by UNIFIX mtrr: v1.40 (20010327) Richard Gooch ([EMAIL PROTECTED]) mtrr: detected mtrr type: Intel PCI: PCI BIOS revision 2.10 entry at 0xf0d90, last bus=2 PCI: Using configuration type 1 PCI: Probing PCI hardware Transparent bridge - Intel Corp. 82801BA/CA/DB PCI Bridge PCI: Using IRQ router PIIX [8086/2440] at 00:1f.0 isapnp: Scanning for PnP cards... isapnp: No Plug Play device found Linux NET4.0 for Linux 2.4 Based upon Swansea University Computer Society NET3.039 Initializing RT netlink socket apm: BIOS version 1.2 Flags 0x03 (Driver version 1.16) Starting kswapd VFS: Disk quotas vdquot_6.5.1 pty: 2048 Unix98 ptys configured Serial driver version 5.05c (2001-07-08) with MANY_PORTS MULTIPORT SHARE_IRQ SERIAL_PCI ISAPNP enabled ttyS0 at 0x03f8 (irq = 4) is a 16550A ttyS1 at 0x02f8 (irq = 3) is a 16550A Real Time Clock Driver v1.10e Floppy drive(s): fd0 is 1.44M FDC 0 is a post-1991 82077 NET4: Frame Diverter 0.46 RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize Uniform Multi-Platform E-IDE driver Revision: 7.00beta-2.4 ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx ICH2: IDE controller at PCI slot 00:1f.1 ICH2: chipset revision 2 ICH2: not 100% native mode: will probe irqs later ide0: BM-DMA at 0xa800-0xa807, BIOS settings: hda:DMA, hdb:pio ide1: BM-DMA at 0xa808-0xa80f, BIOS settings: hdc:pio, hdd:pio hda:
[Samba] Performance Issues with GBit LAN
Hi. I have 2 PC's connected with 1GBit NIC's. When I transfer a file from my File-Server(Redhat9.0, 256 SD-RAM, 300MHz PII, RTL8169 NIC, 2x Western Digital WD200JB RAID 0) to my Windows-PC(AMD Athlon XP 1800+, 1024 MB DDR-RAM, WINXP PRO, RTL8169 NIC, 2x Western Digital WD080JB RAID 0) with Samba, i get Speeds around 8-9MB/sec. I think this is too low for an GBit Network, so i tested the NIC's with the Tool Iperf (http://dast.nlanr.net/Projects/Iperf/) and the throughput with this tool is 300 Mbit/sec, so I think, i can get 20 MB/sec with Samba. The Bottleneck why its only 300 Mbit is the old File-Server Hardware. I'm using CAT 6 Cables and a 8-Port GBit Switch. The Cards are running both at GBit speeds, as the Switch shows. So what's the reason for this Performance issues? Any Help is greatly appreciated. Greets, Steffen Timmermann -- To unsubscribe from this list go to the following URL and read the instructions: http://lists.samba.org/mailman/listinfo/samba
Re: [Samba] Performance Issues with GBit LAN
Steffen Timmermann schrieb: I have 2 PC's connected with 1GBit NIC's. When I transfer a file from my File-Server (Redhat9.0, 256 SD-RAM, 300MHz PII, RTL8169 NIC, What Chipset? Maybe Intel BX? The at this time common Harddisk Interface can't read faster than about 9MB per second. If you use a separate PCI Card as Harddisk Interface enable PCI Buffers in Bios. 2x Western Digital WD200JB RAID 0) to my Windows-PC(AMD Athlon XP 1800+, 1024 MB DDR-RAM, WINXP PRO, RTL8169 NIC, 2x Western Digital WD080JB RAID 0) with Samba, i get Speeds around 8-9MB/sec. to be expected -- To unsubscribe from this list go to the following URL and read the instructions: http://lists.samba.org/mailman/listinfo/samba
Re: [Samba] Performance Issues with GBit LAN
At first: Thanks for the response. Here are the performance Measures of my Harddisks in the Server. As the Harddisks are not connected to the Onboard IDE, they're not limited to 9 MB/sec /dev/sda is the SCSI HDD where Redhat 9.0 is installed on. /dev/sdb is the RAID 0, Connected to the PCI Raid Controller Card. The only Share Samba provides is on the RAID, so performance should be enough. [EMAIL PROTECTED] /]# hdparm -t /dev/sda /dev/sda: Timing buffered disk reads: 64 MB in 5.42 seconds = 11.81 MB/sec [EMAIL PROTECTED] /]# hdparm -t /dev/sdb /dev/sdb: Timing buffered disk reads: 64 MB in 1.55 seconds = 41.29 MB/sec - Original Message - From: Dimitar Vassilev [EMAIL PROTECTED] To: Holger Krull [EMAIL PROTECTED] Cc: Steffen Timmermann [EMAIL PROTECTED]; Sambaliste [EMAIL PROTECTED] Sent: Tuesday, October 12, 2004 7:40 PM Subject: Re: [Samba] Performance Issues with GBit LAN Holger Krull [EMAIL PROTECTED]: Please post your socket options. Where do i find them? Disable computer browser from Control panel - Administrative Tools-Services Wasn't disabled...done Enable Netbios over TCP Wasn't enableddone set SO_RCVBUF and SO_SNDBUF to a value higher than 16386 How do I set the Buffersizes and on which machine? set dir caching. Where do i set this? Get clients gigabit NICs The Server and the Client both have the same GBit NIC with 8169 chipset. Best regards, Dimitar Vassilev -- To unsubscribe from this list go to the following URL and read the instructions: http://lists.samba.org/mailman/listinfo/samba
RE: [Samba] Performance Issues with GBit LAN
Hi Steffen At first: Thanks for the response. Here are the performance Measures of my Harddisks in the Server. As the Harddisks are not connected to the Onboard IDE, they're not limited to 9 MB/sec /dev/sdb is the RAID 0, Connected to the PCI Raid Controller Card. The only Share Samba provides is on the RAID, so performance should be enough. /dev/sdb: Timing buffered disk reads: 64 MB in 1.55 seconds = 41.29 MB/sec (Redhat9.0, 256 SD-RAM, 300MHz PII, RTL8169 NIC, 2x Western Digital WD200JB RAID 0) to my Windows-PC(AMD Athlon XP 1800+, 1024 MB DDR-RAM, WINXP PRO, RTL8169 NIC, 2x Western Digital WD080JB RAID 0) Looking at the configuration of the server PC, you have a Realtek network card and an unspecified RAID card on a P2 300. I'm guessing that the machine is based on an LX or BX chipset with PC66 or PC100 ram. You have 66mhz bandwidth to play with in the PCI bus. You also have 66mhz FSB thanks to the PII 300 CPU. All the benchmarking you have done (both Iperf and hdparm) both test the two subsystems individually, not together. My initial guess is that your PCI bus and/or CPU cannot drive this system at its full potential. Look at the load average on the server during transfer. Secondly you are running Redhat 9 with a Realtek 8169. There were a number of issues with the stock Redhat 9 kernel versus a Realtek 8169, see here http://www.linuxquestions.org/questions/showthread.php?s=threadid=14975 1highlight=8169. In fact these users are reporting only 8-10mb throughput which is exactly what you are describing. My advice to you is to roll a custom kernel for your system (optimized for Pentium 2, raid and network drivers built into kernel instead of modules). Then perform a proper hard disk benchmark using Bonnie++ so you know what the disks are truly capable of (hdparm -t doesn't cut it in this respect). Then I would compare the difference between throughput serving from both your SCSI disk (sda) and RAID array with the benchmark data given by bonnie++. This may reveal a CPU or FSB bottleneck. Good luck and thanks Tom -- To unsubscribe from this list go to the following URL and read the instructions: http://lists.samba.org/mailman/listinfo/samba
[Samba] Performance Issues with AutoCad 2003
Hello, we are using a Samba server (3.0.2a) here at work. It's running on a dual 1.4ghz opteron with two 250gig HD. Everything seems to be running fine except for AutoCad (which is the main program we run). Any time we try to save it can take up to 10 seconds, or each time we try to print it can take about the same amount of time to bring up the print dialog. I am only serving about 6 workstations at a time. We had the files on a Windows XP machine (not near as good hardware) and everything ran smoothly. I have been searching on google and I have found a few hints, but I have not been able to increase my performance. Here is smb.conf: [global] workgroup = WORK security = USER netbios name = SERVER encrypt passwords = Yes smb passwd file = /etc/samba/private/smbpasswd [Drawings] path = /fileservice/drawings writeable = Yes browseable = Yes read only = No guest ok = No comment = autocad related files and misc files valid users = drafter [Topowork] path = /fileservice/topowork writeable = Yes browseable = Yes read only = No guest ok = No comment = adobe related files valid users = drafter hosts allow = 127.0.0.1 10.0.0.0/24 hosts deny = 0.0.0.0/0 Thanks for the help == Brian G. Merrell Graphics Networking Tri-State Land Surveying 435-781-2501 == -- To unsubscribe from this list go to the following URL and read the instructions: http://lists.samba.org/mailman/listinfo/samba
Re: [Samba] Performance Issues with AutoCad 2003
Have you tried dissabling the firewall just to test? /R Brian Merrell wrote: Hello, we are using a Samba server (3.0.2a) here at work. It's running on a dual 1.4ghz opteron with two 250gig HD. Everything seems to be running fine except for AutoCad (which is the main program we run). Any time we try to save it can take up to 10 seconds, or each time we try to print it can take about the same amount of time to bring up the print dialog. I am only serving about 6 workstations at a time. We had the files on a Windows XP machine (not near as good hardware) and everything ran smoothly. I have been searching on google and I have found a few hints, but I have not been able to increase my performance. Here is smb.conf: [global] workgroup = WORK security = USER netbios name = SERVER encrypt passwords = Yes smb passwd file = /etc/samba/private/smbpasswd [Drawings] path = /fileservice/drawings writeable = Yes browseable = Yes read only = No guest ok = No comment = autocad related files and misc files valid users = drafter [Topowork] path = /fileservice/topowork writeable = Yes browseable = Yes read only = No guest ok = No comment = adobe related files valid users = drafter hosts allow = 127.0.0.1 10.0.0.0/24 hosts deny = 0.0.0.0/0 Thanks for the help == Brian G. Merrell Graphics Networking Tri-State Land Surveying 435-781-2501 == -- To unsubscribe from this list go to the following URL and read the instructions: http://lists.samba.org/mailman/listinfo/samba
RE: [Samba] performance issues
Have you tried deadtime = 15 or similar in your smb.conf? -Original Message- From: Mark Le Noury [mailto:[EMAIL PROTECTED] Sent: Friday, 14 March, 2003 7:31 AM To: Samba (E-mail) Subject: [Samba] performance issues Hi, I have compiled and am running samba version 2.2.7.a on Redhat linux 7.3. I am having some performance issues with it and was wondering if I was doing something wrong. I have noticed that if I use samba in security = server mode, every time a new connection is made to the server from the same client a new smbd process is started. It also seems as if the process only ends when the client machine is rebooted. When I use the server in security = user mode, every time a new connection is made from a different client a new process is started. It also only seems to kill the process when the client is rebooted. I end up with a lot of processes running on the fileserver and sometimes the machine locks up and complains about the max file limit being reached. I have found a workaround by increasing the file-max value in /proc/sys/fs. I was just wondering if there is a way to get the processes to die as soon as the client disconnects from the server - maybe I have omitted something when running the configure command?? I was also wondering if it is the default behaviour of samba to spawn new processes every time a connection is made? Is it possible to change this behaviour? thanks in advance, Mark Le Noury -- To unsubscribe from this list go to the following URL and read the instructions: http://lists.samba.org/mailman/listinfo/samba -- To unsubscribe from this list go to the following URL and read the instructions: http://lists.samba.org/mailman/listinfo/samba
[Samba] performance issues
Hi, I have compiled and am running samba version 2.2.7.a on Redhat linux 7.3. I am having some performance issues with it and was wondering if I was doing something wrong. I have noticed that if I use samba in security = server mode, every time a new connection is made to the server from the same client a new smbd process is started. It also seems as if the process only ends when the client machine is rebooted. When I use the server in security = user mode, every time a new connection is made from a different client a new process is started. It also only seems to kill the process when the client is rebooted. I end up with a lot of processes running on the fileserver and sometimes the machine locks up and complains about the max file limit being reached. I have found a workaround by increasing the file-max value in /proc/sys/fs. I was just wondering if there is a way to get the processes to die as soon as the client disconnects from the server - maybe I have omitted something when running the configure command?? I was also wondering if it is the default behaviour of samba to spawn new processes every time a connection is made? Is it possible to change this behaviour? thanks in advance, Mark Le Noury -- To unsubscribe from this list go to the following URL and read the instructions: http://lists.samba.org/mailman/listinfo/samba
Re: [Samba] Samba - Performance Issues
Hi I have noticed that win98 clients have better performance tha win2k with sp3 .I have a similar setu with a 800 GB volumes . I will try the same tests from a windows 98 and compare .Also I have a 4 nic teamed using Intel ANS softwate that improved performance . Thanks - Original Message - From: [EMAIL PROTECTED] To: Vinay Kudithipudi [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Sent: Wednesday, October 02, 2002 2:24 PM Subject: Re: [Samba] Samba - Performance Issues On Wed, Oct 02, 2002 at 12:57:17PM -0500, Vinay Kudithipudi wrote: Hello Guys, I am having some problems with configuring SAMBA with regards to performance. We are running SAMBA 2.2.3a on Dual PIII 1Ghz machines with 512MB of RAM. The server is running on a default server installation of Red Hat 7.2. We have a 500Gb RAID 5 drive using the Promise SX6000 Raid controller. Currently we are only getting a throughput of ~5MB/S for writes and ~13MB/S for reads. Comparing that to NFS which yealds ~15MB/S for reads and ~13MB/S for writes. This clearly rules out the Hardware bottleneck since XFS is able to perform better on the same hardware. Here is the smb.conf I am using currently What clients are you using ? This can make a big difference in how you tune things. Jeremy. -- To unsubscribe from this list go to the following URL and read the instructions: http://lists.samba.org/mailman/listinfo/samba -- To unsubscribe from this list go to the following URL and read the instructions: http://lists.samba.org/mailman/listinfo/samba
[Samba] Samba - Performance Issues
Hello Guys,
I am having some problems with configuring SAMBA with regards to
performance. We are running SAMBA 2.2.3a on Dual PIII 1Ghz machines with
512MB of RAM. The server is running on a default server installation of Red
Hat 7.2. We have a 500Gb RAID 5 drive using the Promise SX6000 Raid
controller.
Currently we are only getting a throughput of ~5MB/S for writes and
~13MB/S for reads. Comparing that to NFS which yealds ~15MB/S for reads and
~13MB/S for writes. This clearly rules out the Hardware bottleneck since XFS
is able to perform better on the same hardware. Here is the smb.conf I am
using currently
===SMB.CONF===
[global]
workgroup = MYGROUP
netbios name = {HOSTNAME}
wins server = {WINSSERVER}
server string = {HOSTNAME}
security = SHARE
encrypt passwords = Yes
log file = /var/log/samba/log.%m
max log size = 50
socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
dns proxy = No
oplocks = No
level2 oplocks = No
[homes]
comment = Home Directories
read only = No
browseable = No
[Data]
comment = Data Backup Directory
path = /home/gm/data
guest account =
valid users = spirian
read only = No
==
I was wondering if there is any documentation for fine tuning SAMBA. Any
help is appreciated. Thanks.
Vinay Kudithipudi
Associate Network Operations Engineer
Spirian Technologies Inc.
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RE: [Samba] Samba - Performance Issues
how are u measuring read and write speeds?
-Original Message-
From: Vinay Kudithipudi [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, October 02, 2002 12:57 PM
To: [EMAIL PROTECTED]
Subject: [Samba] Samba - Performance Issues
Hello Guys,
I am having some problems with configuring SAMBA with regards to
performance. We are running SAMBA 2.2.3a on Dual PIII 1Ghz machines with
512MB of RAM. The server is running on a default server installation of Red
Hat 7.2. We have a 500Gb RAID 5 drive using the Promise SX6000 Raid
controller.
Currently we are only getting a throughput of ~5MB/S for writes and
~13MB/S for reads. Comparing that to NFS which yealds ~15MB/S for reads and
~13MB/S for writes. This clearly rules out the Hardware bottleneck since XFS
is able to perform better on the same hardware. Here is the smb.conf I am
using currently
===SMB.CONF===
[global]
workgroup = MYGROUP
netbios name = {HOSTNAME}
wins server = {WINSSERVER}
server string = {HOSTNAME}
security = SHARE
encrypt passwords = Yes
log file = /var/log/samba/log.%m
max log size = 50
socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
dns proxy = No
oplocks = No
level2 oplocks = No
[homes]
comment = Home Directories
read only = No
browseable = No
[Data]
comment = Data Backup Directory
path = /home/gm/data
guest account =
valid users = spirian
read only = No
==
I was wondering if there is any documentation for fine tuning SAMBA. Any
help is appreciated. Thanks.
Vinay Kudithipudi
Associate Network Operations Engineer
Spirian Technologies Inc.
--
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instructions: http://lists.samba.org/mailman/listinfo/samba
--
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RE: [Samba] Samba - Performance Issues
Javid,
I am running a script which copies a 1Gb files to and from the shared
driver. Am then dividing the time taken by the size of the file. I know it
is very hacked up :), but it should at least give some approximations.
Thanks.
Vinay Kudithipudi
Associate Network Operations Engineer
Spirian Technologies Inc.
-Original Message-
From: Javid Abdul-AJAVID1 [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, October 02, 2002 1:13 PM
To: 'Vinay Kudithipudi'; [EMAIL PROTECTED]
Subject: RE: [Samba] Samba - Performance Issues
how are u measuring read and write speeds?
-Original Message-
From: Vinay Kudithipudi [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, October 02, 2002 12:57 PM
To: [EMAIL PROTECTED]
Subject: [Samba] Samba - Performance Issues
Hello Guys,
I am having some problems with configuring SAMBA with regards to
performance. We are running SAMBA 2.2.3a on Dual PIII 1Ghz machines with
512MB of RAM. The server is running on a default server installation of Red
Hat 7.2. We have a 500Gb RAID 5 drive using the Promise SX6000 Raid
controller.
Currently we are only getting a throughput of ~5MB/S for writes and
~13MB/S for reads. Comparing that to NFS which yealds ~15MB/S for reads and
~13MB/S for writes. This clearly rules out the Hardware bottleneck since XFS
is able to perform better on the same hardware. Here is the smb.conf I am
using currently
===SMB.CONF===
[global]
workgroup = MYGROUP
netbios name = {HOSTNAME}
wins server = {WINSSERVER}
server string = {HOSTNAME}
security = SHARE
encrypt passwords = Yes
log file = /var/log/samba/log.%m
max log size = 50
socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
dns proxy = No
oplocks = No
level2 oplocks = No
[homes]
comment = Home Directories
read only = No
browseable = No
[Data]
comment = Data Backup Directory
path = /home/gm/data
guest account =
valid users = spirian
read only = No
==
I was wondering if there is any documentation for fine tuning SAMBA. Any
help is appreciated. Thanks.
Vinay Kudithipudi
Associate Network Operations Engineer
Spirian Technologies Inc.
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RE: [Samba] Samba - Performance Issues
so are you using xcopy or copy dos command in your script?
-Original Message-
From: Vinay Kudithipudi [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, October 02, 2002 1:21 PM
To: 'Javid Abdul-AJAVID1'; [EMAIL PROTECTED]
Subject: RE: [Samba] Samba - Performance Issues
Javid,
I am running a script which copies a 1Gb files to and from the shared
driver. Am then dividing the time taken by the size of the file. I know it
is very hacked up :), but it should at least give some approximations.
Thanks.
Vinay Kudithipudi
Associate Network Operations Engineer
Spirian Technologies Inc.
-Original Message-
From: Javid Abdul-AJAVID1 [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, October 02, 2002 1:13 PM
To: 'Vinay Kudithipudi'; [EMAIL PROTECTED]
Subject: RE: [Samba] Samba - Performance Issues
how are u measuring read and write speeds?
-Original Message-
From: Vinay Kudithipudi [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, October 02, 2002 12:57 PM
To: [EMAIL PROTECTED]
Subject: [Samba] Samba - Performance Issues
Hello Guys,
I am having some problems with configuring SAMBA with regards to
performance. We are running SAMBA 2.2.3a on Dual PIII 1Ghz machines with
512MB of RAM. The server is running on a default server installation of Red
Hat 7.2. We have a 500Gb RAID 5 drive using the Promise SX6000 Raid
controller.
Currently we are only getting a throughput of ~5MB/S for writes and
~13MB/S for reads. Comparing that to NFS which yealds ~15MB/S for reads and
~13MB/S for writes. This clearly rules out the Hardware bottleneck since XFS
is able to perform better on the same hardware. Here is the smb.conf I am
using currently
===SMB.CONF===
[global]
workgroup = MYGROUP
netbios name = {HOSTNAME}
wins server = {WINSSERVER}
server string = {HOSTNAME}
security = SHARE
encrypt passwords = Yes
log file = /var/log/samba/log.%m
max log size = 50
socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
dns proxy = No
oplocks = No
level2 oplocks = No
[homes]
comment = Home Directories
read only = No
browseable = No
[Data]
comment = Data Backup Directory
path = /home/gm/data
guest account =
valid users = spirian
read only = No
==
I was wondering if there is any documentation for fine tuning SAMBA. Any
help is appreciated. Thanks.
Vinay Kudithipudi
Associate Network Operations Engineer
Spirian Technologies Inc.
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Re: [Samba] Samba - Performance Issues
On Wed, Oct 02, 2002 at 12:57:17PM -0500, Vinay Kudithipudi wrote: Hello Guys, I am having some problems with configuring SAMBA with regards to performance. We are running SAMBA 2.2.3a on Dual PIII 1Ghz machines with 512MB of RAM. The server is running on a default server installation of Red Hat 7.2. We have a 500Gb RAID 5 drive using the Promise SX6000 Raid controller. Currently we are only getting a throughput of ~5MB/S for writes and ~13MB/S for reads. Comparing that to NFS which yealds ~15MB/S for reads and ~13MB/S for writes. This clearly rules out the Hardware bottleneck since XFS is able to perform better on the same hardware. Here is the smb.conf I am using currently What clients are you using ? This can make a big difference in how you tune things. Jeremy. -- To unsubscribe from this list go to the following URL and read the instructions: http://lists.samba.org/mailman/listinfo/samba
Re: [Samba] Samba - Performance Issues
On Wed, Oct 02, 2002 at 12:57:17PM -0500, Vinay Kudithipudi wrote:
===SMB.CONF===
[global]
workgroup = MYGROUP
netbios name = {HOSTNAME}
wins server = {WINSSERVER}
server string = {HOSTNAME}
security = SHARE
encrypt passwords = Yes
log file = /var/log/samba/log.%m
max log size = 50
socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
IIRC, someone wrote in recently saying that the sizes of SO_RCVBUF
and SO_SNDBUF can have huge effects on performance, and setting
them to 8192 (which used to be a good idea) can reduce performance.
I suggest removing them from the socket options and measuring the
performance at the defaults, then try modifying them and comparing
performance.
Also, TCP_NODELAY is the default, right? So maybe just comment
out the socket options parameter, restart the daemons, and check
to see if the problem goes away.
I was wondering if there is any documentation for fine tuning SAMBA. Any
help is appreciated. Thanks.
Nowadays, it's usually best to leave things alone (i.e., at the defaults).
It's important to not change things in a way that reduces performance.
Jay Ts
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RE: [Samba] Samba - Performance Issues
Jay - I tried the test without any options (i.e. all default) and still get
the same results
Javid - I am using copy
Jeremy - All clients are Win2k or WinXP.
I would very much like to blame the hardware for the problem, but since NFS
yields better performance I am thinking SAMBA may be the cause here.
Vinay Kudithipudi
Associate Network Operations Engineer
Spirian Technologies Inc.
-Original Message-
From: Jay Ts [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, October 02, 2002 1:50 PM
To: Vinay Kudithipudi
Cc: [EMAIL PROTECTED]
Subject: Re: [Samba] Samba - Performance Issues
On Wed, Oct 02, 2002 at 12:57:17PM -0500, Vinay Kudithipudi wrote:
===SMB.CONF===
[global]
workgroup = MYGROUP
netbios name = {HOSTNAME}
wins server = {WINSSERVER}
server string = {HOSTNAME}
security = SHARE
encrypt passwords = Yes
log file = /var/log/samba/log.%m
max log size = 50
socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
IIRC, someone wrote in recently saying that the sizes of SO_RCVBUF and
SO_SNDBUF can have huge effects on performance, and setting them to 8192
(which used to be a good idea) can reduce performance. I suggest removing
them from the socket options and measuring the performance at the defaults,
then try modifying them and comparing performance.
Also, TCP_NODELAY is the default, right? So maybe just comment out the
socket options parameter, restart the daemons, and check to see if the
problem goes away.
I was wondering if there is any documentation for fine tuning SAMBA.
Any help is appreciated. Thanks.
Nowadays, it's usually best to leave things alone (i.e., at the defaults).
It's important to not change things in a way that reduces performance.
Jay Ts
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Re: [Samba] Samba - Performance Issues
On Wed, Oct 02, 2002 at 05:50:49PM -0500, Vinay Kudithipudi wrote: Jay - I tried the test without any options (i.e. all default) and still get the same results Javid - I am using copy Jeremy - All clients are Win2k or WinXP. I would very much like to blame the hardware for the problem, but since NFS yields better performance I am thinking SAMBA may be the cause here. I'm not saying it isn't. Are you using PC-NFS between the same clients and the Samba server to compare ? Win2K and WinXP clients should be using the large read/write calls, so larger TCP buffers should be better for them. Do you have any network traces to look at ? Jeremy. -- To unsubscribe from this list go to the following URL and read the instructions: http://lists.samba.org/mailman/listinfo/samba
[Samba] Samba performance issues
Hi all We are implementing samba-ldap to act as an nt pdc and are seeing performance problems. We have a 1ghz, 3gb Ram, 36gb box that is running samba-2.2.5 and openldap-2.0.23 under redhat 7.3 with kernel 2.4.18-3. Clients are all Win2k SP3. All the ldap requests are to the localhost interface. The box is acting as the PDC for the domain, and also sharing diskspace and printers. When we get around 30-40 smbd processes running everything slows to a crawl. we have about 30 slapd processes running, and the total process count for the box is about 130 at this point. here is the output of top at this point: 12:46pm up 2 days, 17:14, 3 users, load average: 20.24, 20.26, 20.51 129 processes: 106 sleeping, 23 running, 0 zombie, 0 stopped CPU states: 36.1% user, 63.8% system, 0.0% nice, 0.0% idle Mem: 3229040K av, 3166372K used, 62668K free, 0K shrd, 148480K buff Swap: 513976K av, 0K used, 513976K free 2758060K cached We would like to support about 100 simultaneous users. We were using mandatory server based profiles, but have discontinued them to try and improve performance. So, my questions are: 1. Is the amount of processes desired unreasonable for the hardware? 2. If so, does anybody have some figures on users supported for a particular hardware configuration? 3. We are seeing (using smbstatus) exclusive oplocks on files that are on read-only (both in the share definition and the filesystem permissions) shares. Should this be happening? Could we use fake_oplocks on the share to improve performance? 4. Has anybody had any luck with mandatory server-based profiles? any help or suggestions would be greatly appreciated. John -- To unsubscribe from this list go to the following URL and read the instructions: http://lists.samba.org/mailman/listinfo/samba
Re: [Samba] Samba performance issues
On Tue, 2002-09-24 at 15:57, John Coston wrote: 12:46pm up 2 days, 17:14, 3 users, load average: 20.24, 20.26, 20.51 129 processes: 106 sleeping, 23 running, 0 zombie, 0 stopped CPU states: 36.1% user, 63.8% system, 0.0% nice, 0.0% idle Mem: 3229040K av, 3166372K used, 62668K free, 0K shrd, i have about 20 users on a 900Mhz machine with 100G of storage (only 384M ram) i don't think it's ever been cpu bound as a result of samba activity. that 63.8% system seems out of whack... what is the disk subsystem? brad -- To unsubscribe from this list go to the following URL and read the instructions: http://lists.samba.org/mailman/listinfo/samba
Re: [Samba] Samba performance issues
it's software RAID-1 using two fast wide scsi 36 gb discs. Filesystem is ext3. We have one 30gb partition for share data, and the rest is for system and swap. here is some of output from dmesg: md: md driver 0.90.0 MAX_MD_DEVS=256, MD_SB_DISKS=27 md: Autodetecting RAID arrays. ... scsi0 : sym53c8xx-1.7.3c-20010512 scsi1 : sym53c8xx-1.7.3c-20010512 blk: queue c3c57618, I/O limit 4095Mb (mask 0x) Vendor: HPModel: 36.4GB C 80-8C32 Rev: Type: Direct-Access ANSI SCSI revision: 02 blk: queue c3c57818, I/O limit 4095Mb (mask 0x) Vendor: HP 36.4G Model: MAN3367MC Rev: HP04 Type: Direct-Access ANSI SCSI revision: 02 ... I'm not too swift on filesystems and discs, so let me know if there is more info you need thanks On Tuesday, September 24, 2002, at 01:40 PM, Bradley W. Langhorst wrote: On Tue, 2002-09-24 at 15:57, John Coston wrote: 12:46pm up 2 days, 17:14, 3 users, load average: 20.24, 20.26, 20.51 129 processes: 106 sleeping, 23 running, 0 zombie, 0 stopped CPU states: 36.1% user, 63.8% system, 0.0% nice, 0.0% idle Mem: 3229040K av, 3166372K used, 62668K free, 0K shrd, i have about 20 users on a 900Mhz machine with 100G of storage (only 384M ram) i don't think it's ever been cpu bound as a result of samba activity. that 63.8% system seems out of whack... what is the disk subsystem? brad -- To unsubscribe from this list go to the following URL and read the instructions: http://lists.samba.org/mailman/listinfo/samba
Re: [Samba] Samba performance issues
On Tue, 24 Sep 2002, John Coston wrote: it's software RAID-1 using two fast wide scsi 36 gb discs. Filesystem is ext3. We have one 30gb partition for share data, and the rest is for system and swap. here is some of output from dmesg: md: md driver 0.90.0 MAX_MD_DEVS=256, MD_SB_DISKS=27 md: Autodetecting RAID arrays. ... scsi0 : sym53c8xx-1.7.3c-20010512 scsi1 : sym53c8xx-1.7.3c-20010512 blk: queue c3c57618, I/O limit 4095Mb (mask 0x) Vendor: HPModel: 36.4GB C 80-8C32 Rev: Type: Direct-Access ANSI SCSI revision: 02 blk: queue c3c57818, I/O limit 4095Mb (mask 0x) Vendor: HP 36.4G Model: MAN3367MC Rev: HP04 Type: Direct-Access ANSI SCSI revision: 02 ... I'm not too swift on filesystems and discs, so let me know if there is more info you need thanks include output of: vmstat 1 iostat 1 uname -a -- Martin Mokrejs [EMAIL PROTECTED], [EMAIL PROTECTED] PGP5.0i key is at http://www.natur.cuni.cz/~mmokrejs MIPS / Institute for Bioinformatics http://mips.gsf.de GSF - National Research Center for Environment and Health Ingolstaedter Landstrasse 1, D-85764 Neuherberg, Germany tel.: +49-89-3187 3683 , fax:+49-89-3187 3585 -- To unsubscribe from this list go to the following URL and read the instructions: http://lists.samba.org/mailman/listinfo/samba
Re: [Samba] Samba performance issues
here is the output of vmstat, iostat, and uname: [root@foo root]# vmstat 1 procs memoryswap io system cpu r b w swpd free buff cache si sobibo incs us sy id 21 0 1 0 61384 148780 2763956 0 0 293 91 113 17 26 57 17 0 2 0 61384 148780 2763956 0 0 0 0 15648 40 60 0 14 0 1 0 61384 148780 2763956 0 0 0 0 10941 39 61 0 11 0 1 0 61376 148780 2763956 0 0 0 0 122 109 30 70 0 15 0 3 0 61368 148780 2763956 0 0 052 155 143 47 53 0 20 0 1 0 61368 148780 2763956 0 0 0 4 11057 42 58 0 20 0 1 0 61368 148780 2763956 0 0 0 0 10864 41 59 0 20 0 1 0 61368 148780 2763956 0 0 0 0 10638 42 58 0 20 0 1 0 61368 148780 2763956 0 0 0 0 10565 30 70 0 13 0 1 0 61368 148780 2763956 0 0 012 200 129 36 64 0 13 0 1 0 61368 148780 2763956 0 0 0 0 10640 27 73 0 14 0 0 0 61368 148780 2763956 0 0 0 0 14870 34 66 0 20 0 0 0 61368 148780 2763956 0 0 0 0 12469 41 59 0 [root@foo root]# iostat 1 Linux 2.4.18-3 (student0) 09/24/2002 avg-cpu: %user %nice%sys %idle 16.710.00 26.26 57.02 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-0 11.84 2.25 185.49 541354 44584762 dev8-1 11.83 1.68 185.49 403090 44584762 avg-cpu: %user %nice%sys %idle 35.000.00 65.000.00 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-04.00 0.00 112.00 0112 dev8-14.00 0.00 112.00 0112 avg-cpu: %user %nice%sys %idle 49.000.00 51.000.00 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-00.00 0.00 0.00 0 0 dev8-10.00 0.00 0.00 0 0 avg-cpu: %user %nice%sys %idle 46.000.00 54.000.00 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-00.00 0.00 0.00 0 0 dev8-10.00 0.00 0.00 0 0 avg-cpu: %user %nice%sys %idle 36.000.00 64.000.00 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-00.00 0.00 0.00 0 0 dev8-10.00 0.00 0.00 0 0 avg-cpu: %user %nice%sys %idle 16.700.00 26.24 57.07 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-0 11.85 2.25 185.63 541354 44582090 dev8-1 11.84 1.68 185.63 403090 44582090 uname -a Linux foo 2.4.18-3 #1 Thu Apr 18 07:37:53 EDT 2002 i686 unknown Thanks! On Tuesday, September 24, 2002, at 02:04 PM, Martin MOKREJ wrote: On Tue, 24 Sep 2002, John Coston wrote: it's software RAID-1 using two fast wide scsi 36 gb discs. Filesystem is ext3. We have one 30gb partition for share data, and the rest is for system and swap. here is some of output from dmesg: md: md driver 0.90.0 MAX_MD_DEVS=256, MD_SB_DISKS=27 md: Autodetecting RAID arrays. ... scsi0 : sym53c8xx-1.7.3c-20010512 scsi1 : sym53c8xx-1.7.3c-20010512 blk: queue c3c57618, I/O limit 4095Mb (mask 0x) Vendor: HPModel: 36.4GB C 80-8C32 Rev: Type: Direct-Access ANSI SCSI revision: 02 blk: queue c3c57818, I/O limit 4095Mb (mask 0x) Vendor: HP 36.4G Model: MAN3367MC Rev: HP04 Type: Direct-Access ANSI SCSI revision: 02 ... I'm not too swift on filesystems and discs, so let me know if there is more info you need thanks include output of: vmstat 1 iostat 1 uname -a -- Martin Mokrejs [EMAIL PROTECTED], [EMAIL PROTECTED] PGP5.0i key is at http://www.natur.cuni.cz/~mmokrejs MIPS / Institute for Bioinformatics http://mips.gsf.de GSF - National Research Center for Environment and Health Ingolstaedter Landstrasse 1, D-85764 Neuherberg, Germany tel.: +49-89-3187 3683 , fax: +49-89-3187 3585 -- To unsubscribe from this list go to the following URL and read the instructions: http://lists.samba.org/mailman/listinfo/samba
Re: [Samba] Samba performance issues
sorry - the last iostat result is from another execution of the command (without the 1), not from the looping output. On Tuesday, September 24, 2002, at 02:22 PM, John Coston wrote: here is the output of vmstat, iostat, and uname: [root@foo root]# vmstat 1 procs memoryswap io system cpu r b w swpd free buff cache si sobibo incs us sy id 21 0 1 0 61384 148780 2763956 0 0 293 91 113 17 26 57 17 0 2 0 61384 148780 2763956 0 0 0 0 15648 40 60 0 14 0 1 0 61384 148780 2763956 0 0 0 0 10941 39 61 0 11 0 1 0 61376 148780 2763956 0 0 0 0 122 109 30 70 0 15 0 3 0 61368 148780 2763956 0 0 052 155 143 47 53 0 20 0 1 0 61368 148780 2763956 0 0 0 4 11057 42 58 0 20 0 1 0 61368 148780 2763956 0 0 0 0 10864 41 59 0 20 0 1 0 61368 148780 2763956 0 0 0 0 10638 42 58 0 20 0 1 0 61368 148780 2763956 0 0 0 0 10565 30 70 0 13 0 1 0 61368 148780 2763956 0 0 012 200 129 36 64 0 13 0 1 0 61368 148780 2763956 0 0 0 0 10640 27 73 0 14 0 0 0 61368 148780 2763956 0 0 0 0 14870 34 66 0 20 0 0 0 61368 148780 2763956 0 0 0 0 12469 41 59 0 [root@foo root]# iostat 1 Linux 2.4.18-3 (student0) 09/24/2002 avg-cpu: %user %nice%sys %idle 16.710.00 26.26 57.02 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-0 11.84 2.25 185.49 541354 44584762 dev8-1 11.83 1.68 185.49 403090 44584762 avg-cpu: %user %nice%sys %idle 35.000.00 65.000.00 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-04.00 0.00 112.00 0112 dev8-14.00 0.00 112.00 0112 avg-cpu: %user %nice%sys %idle 49.000.00 51.000.00 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-00.00 0.00 0.00 0 0 dev8-10.00 0.00 0.00 0 0 avg-cpu: %user %nice%sys %idle 46.000.00 54.000.00 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-00.00 0.00 0.00 0 0 dev8-10.00 0.00 0.00 0 0 avg-cpu: %user %nice%sys %idle 36.000.00 64.000.00 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-00.00 0.00 0.00 0 0 dev8-10.00 0.00 0.00 0 0 deleted uname -a Linux foo 2.4.18-3 #1 Thu Apr 18 07:37:53 EDT 2002 i686 unknown Thanks! On Tuesday, September 24, 2002, at 02:04 PM, Martin MOKREJ wrote: On Tue, 24 Sep 2002, John Coston wrote: it's software RAID-1 using two fast wide scsi 36 gb discs. Filesystem is ext3. We have one 30gb partition for share data, and the rest is for system and swap. here is some of output from dmesg: md: md driver 0.90.0 MAX_MD_DEVS=256, MD_SB_DISKS=27 md: Autodetecting RAID arrays. ... scsi0 : sym53c8xx-1.7.3c-20010512 scsi1 : sym53c8xx-1.7.3c-20010512 blk: queue c3c57618, I/O limit 4095Mb (mask 0x) Vendor: HPModel: 36.4GB C 80-8C32 Rev: Type: Direct-Access ANSI SCSI revision: 02 blk: queue c3c57818, I/O limit 4095Mb (mask 0x) Vendor: HP 36.4G Model: MAN3367MC Rev: HP04 Type: Direct-Access ANSI SCSI revision: 02 ... I'm not too swift on filesystems and discs, so let me know if there is more info you need thanks include output of: vmstat 1 iostat 1 uname -a -- Martin Mokrejs [EMAIL PROTECTED], [EMAIL PROTECTED] PGP5.0i key is at http://www.natur.cuni.cz/~mmokrejs MIPS / Institute for Bioinformatics http://mips.gsf.de GSF - National Research Center for Environment and Health Ingolstaedter Landstrasse 1, D-85764 Neuherberg, Germany tel.: +49-89-3187 3683 , fax: +49-89-3187 3585 -- To unsubscribe from this list go to the following URL and read the instructions: http://lists.samba.org/mailman/listinfo/samba -- To unsubscribe from this list go to the following URL and read the instructions: http://lists.samba.org/mailman/listinfo/samba
Re: [Samba] Samba performance issues
Sorry for the confusion - if I run iostat I get this: [root@foo root]# iostat Linux 2.4.18-3 (foo) 09/24/2002 avg-cpu: %user %nice%sys %idle 16.790.00 26.39 56.82 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-0 11.80 2.24 184.95 541354 44609586 dev8-1 11.80 1.67 184.95 403090 44609586 if I run iostat 1 it loops every second, so the results (for the first 16 seconds) are: [root@foo root]# iostat 1 16 Linux 2.4.18-3 (foo) 09/24/2002 avg-cpu: %user %nice%sys %idle 16.790.00 26.40 56.80 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-0 11.80 2.24 184.91 541354 44615082 dev8-1 11.80 1.67 184.91 403090 44615082 avg-cpu: %user %nice%sys %idle 31.000.00 69.000.00 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-00.00 0.00 0.00 0 0 dev8-10.00 0.00 0.00 0 0 avg-cpu: %user %nice%sys %idle 37.000.00 63.000.00 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-00.00 0.00 0.00 0 0 dev8-10.00 0.00 0.00 0 0 avg-cpu: %user %nice%sys %idle 26.000.00 74.000.00 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-00.00 0.00 0.00 0 0 dev8-10.00 0.00 0.00 0 0 avg-cpu: %user %nice%sys %idle 40.950.00 59.050.00 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-00.00 0.00 0.00 0 0 dev8-10.00 0.00 0.00 0 0 avg-cpu: %user %nice%sys %idle 32.000.00 68.000.00 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-04.00 0.00 136.00 0136 dev8-14.00 0.00 136.00 0136 avg-cpu: %user %nice%sys %idle 40.000.00 60.000.00 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-00.00 0.00 0.00 0 0 dev8-10.00 0.00 0.00 0 0 avg-cpu: %user %nice%sys %idle 38.000.00 62.000.00 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-00.00 0.00 0.00 0 0 dev8-10.00 0.00 0.00 0 0 avg-cpu: %user %nice%sys %idle 42.340.00 57.660.00 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-0 11.71 0.00 165.77 0184 dev8-1 11.71 0.00 165.77 0184 avg-cpu: %user %nice%sys %idle 34.070.00 65.930.00 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-00.00 0.00 0.00 0 0 dev8-10.00 0.00 0.00 0 0 avg-cpu: %user %nice%sys %idle 36.000.00 64.000.00 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-06.00 0.00 104.00 0104 dev8-16.00 0.00 104.00 0104 avg-cpu: %user %nice%sys %idle 37.000.00 63.000.00 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-00.00 0.00 0.00 0 0 dev8-10.00 0.00 0.00 0 0 avg-cpu: %user %nice%sys %idle 42.000.00 58.000.00 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-00.00 0.00 0.00 0 0 dev8-10.00 0.00 0.00 0 0 avg-cpu: %user %nice%sys %idle 36.000.00 64.000.00 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-00.00 0.00 0.00 0 0 dev8-10.00 0.00 0.00 0 0 avg-cpu: %user %nice%sys %idle 41.000.00 59.000.00 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-00.00 0.00 0.00 0 0 dev8-10.00 0.00 0.00 0
Re: [Samba] Samba performance issues
On 24 Sep 2002, Bradley W. Langhorst wrote: probably you want to run the iostat 1 during heavier load... however the summary result does look funny to me... On my system we have ~ 1:1 ratio of reads to writes you have a ~ 1:200 ratio of reads to writes. Does that make sense in your environment? Didn't you have a look into the first lines where's the summary output from iostat? All those other remaining output lines show zero disk activity ... It doesn't look like your system has a memory problem so i'd not worry about vmstat. I'd would worry. Actually, what says dmesg command? -- Martin Mokrejs [EMAIL PROTECTED], [EMAIL PROTECTED] PGP5.0i key is at http://www.natur.cuni.cz/~mmokrejs MIPS / Institute for Bioinformatics http://mips.gsf.de GSF - National Research Center for Environment and Health Ingolstaedter Landstrasse 1, D-85764 Neuherberg, Germany tel.: +49-89-3187 3683 , fax:+49-89-3187 3585 -- To unsubscribe from this list go to the following URL and read the instructions: http://lists.samba.org/mailman/listinfo/samba
Re: [Samba] Samba performance issues
On Tue, 2002-09-24 at 18:19, John Coston wrote: some output from ps wauxf: for smbd, all the processes are around this value: parky 1963 3.5 0.1 7488 3452 ?R07:37 15:41 \_ smbd -D for ldap, all of the processes are around this value: ldap 6150 0.0 0.1 75548 5068 ?S14:45 0:00 \_ /usr/sbin/slapd -u ldap we have about 30 of each process running right now. If I understand this correctly, it means that I have 30 ldap processes that are each using 75 MB of virtual memory, which would be 2.25 GB virtual memory for all of them. i'm pretty sure that means that all the ldap processes are sharing 75M of vm -- To unsubscribe from this list go to the following URL and read the instructions: http://lists.samba.org/mailman/listinfo/samba
Re: [Samba] Samba performance issues
Hi, I'm rather interested in the outcome of this on or off the list; but I suspect there will be other people on the list who are interested - please keep posting to the list :-) I think we have very similar HW. We have a dual CPU (1.4G PIII) LPr2000 netserver with 10k and 15k drives. We normally sit around 5% cpu so it seems to be something about your config, probably not your HW. Our box also does internal http, mail, dns, fax, lpd, ldap etc. Can I suggest you run top and see what seems to be using CPU time? Does %CPU in the process list include sys time? I think it does, if so, it will help you get an idea of what is contributing to the 60% sys time (even if top doesn't include sys then it is likely to be showing culprits anyhow). Do you run anything else on this machine (eg oracle)? :-) Perhaps posting ps axf and a copy of a top page might help. Your LDAP backend... is it getting busy? Are the relevant things indexed? I'd upgrade your kernel to the last RH7.3 errata (2.4.18-10?). You will likely get locking issues (discussed on samba-technical show stopper) if you are using ldap sam, I patched the samba 2.2.5 rawhide rpm. I'll send that in a separate email to you. Good luck. Martin MOKREJ© wrote: On 24 Sep 2002, Bradley W. Langhorst wrote: On Tue, 2002-09-24 at 18:07, Martin MOKREJ© wrote: On 24 Sep 2002, Bradley W. Langhorst wrote: probably you want to run the iostat 1 during heavier load... however the summary result does look funny to me... On my system we have ~ 1:1 ratio of reads to writes you have a ~ 1:200 ratio of reads to writes. Does that make sense in your environment? Didn't you have a look into the first lines where's the summary output from iostat? sure i did... maybe i'm misreading it avg-cpu: %user %nice%sys %idle 16.790.00 26.39 56.82 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-0 11.80 2.24 184.95 541354 44609586 dev8-1 11.80 1.67 184.95 403090 44609586 Unless I'm mistaken the summary says that (on average) he only has 2 reads/s vs 185 writes/s You are right, sure. But my point was why is the *current* load that high. That's why I had a look on statistics per every second. All those other remaining output lines show zero disk activity ... That's why I suggested he run iostat when the system is under more load. In principal I agree anyway. ;) It doesn't look like your system has a memory problem so i'd not worry about vmstat. I'd would worry. Actually, what says dmesg command? The reason I think memory is no problem here is: Mem: 3229040K av, 3166372K used, 62668K free, 0K shrd, 148480K buff Swap: 513976K av, 0K used, 513976K free 2758060K cached so the swap file has not been touched and there is 2.7gig of disk being cached in RAM Yes, but the sy column in the output of vmstat was quite high. That worries me. ;) I think we should not Cc: the samba email list to these emails anymore. ;) -- Martin Mokrejs [EMAIL PROTECTED], [EMAIL PROTECTED] PGP5.0i key is at http://www.natur.cuni.cz/~mmokrejs MIPS / Institute for Bioinformatics http://mips.gsf.de GSF - National Research Center for Environment and Health Ingolstaedter Landstrasse 1, D-85764 Neuherberg, Germany tel.: +49-89-3187 3683 , fax: +49-89-3187 3585 -- To unsubscribe from this list go to the following URL and read the instructions: http://lists.samba.org/mailman/listinfo/samba -- Robert Stuart Systems Administrator Ph: 61 7 3864 0364 Fax: 61 7 3221 2553 -- To unsubscribe from this list go to the following URL and read the instructions: http://lists.samba.org/mailman/listinfo/samba
