[Samba] Unusable performance over WAN (part 2)
Hi all, Disregard my previous posts, I've consolidated everything here. I'm having terrible performance issues with samba over a WAN (point-to-point T1 link). Doing a copy of a 2MB file from a samba server to a linux client running smbclient takes over 5 minutes. SCPing the same file takes seconds. The server is running samba version 3.0.25c with kernel 2.6.16.18. I've put up a set of debugging logs at: http://emagiccards.com/james/sambalogs.tar.bz2 Inside are 3 files: smb.conf - the configuration of the samba server log.agard - the level 10 debug log of the copy from samba samba-tcpdump.log - a tcpdump log from the client side of the copy Any help to fix this issue would be greatly appreciated since the file server is pretty unusuable over the WAN. If you need any more information, please let me know. It is imperative that I find out what's happening here. Thanks. -- James Lamanna -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/listinfo/samba
Re: [Samba] Unusable performance over WAN (part 2)
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 James Lamanna wrote: Hi all, Disregard my previous posts, I've consolidated everything here. I'm having terrible performance issues with samba over a WAN (point-to-point T1 link). Doing a copy of a 2MB file from a samba server to a linux client running smbclient takes over 5 minutes. SCPing the same file takes seconds. The server is running samba version 3.0.25c with kernel 2.6.16.18. I've put up a set of debugging logs at: http://emagiccards.com/james/sambalogs.tar.bz2 Inside are 3 files: smb.conf - the configuration of the samba server log.agard - the level 10 debug log of the copy from samba samba-tcpdump.log - a tcpdump log from the client side of the copy Any help to fix this issue would be greatly appreciated since the file server is pretty unusuable over the WAN. If you need any more information, please let me know. It is imperative that I find out what's happening here. Well, there's always paid support. See the samba web site. testparm yeilds 1 error and 1 warning. Unknown parameter encountered: show preserve case Ignoring unknown parameter show preserve case should probably be short preserve case Server's Role (logon server) NOT ADVISED with domain-level security Loaded services file OK. Server role: ROLE_DOMAIN_BDC When I specifically want samba to use an IP address, I use the IP address in the interfaces clause. eth1 can change when replacing network cards. I've used cifs over WAN a lot over the years. It is slower than ftp and scp but there shouldn't be breaks waiting for ACK. You'll not want to hear it, but this is almost always a network issue; card, router, switch, WAN link box, etc. I like larger packets for most of the uses of a server. So I add to socket options SO_SNDBUF=65536 SO_RCVBUF=65536 Regards, Doug -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.5 (GNU/Linux) Comment: Using GnuPG with SUSE - http://enigmail.mozdev.org iD8DBQFHCAU4FqWysr/jOHMRAs5KAKCiRBH5t8Ke5QU0U9sXQ0+mtl8s7ACfa0ce V2/foUb+PpUUiZ/YModZFFQ= =AIJ8 -END PGP SIGNATURE- -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/listinfo/samba
Re: [Samba] Unusable performance over WAN (part 2)
On 10/6/07, Doug VanLeuven [EMAIL PROTECTED] wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 James Lamanna wrote: Hi all, Disregard my previous posts, I've consolidated everything here. I'm having terrible performance issues with samba over a WAN (point-to-point T1 link). Doing a copy of a 2MB file from a samba server to a linux client running smbclient takes over 5 minutes. SCPing the same file takes seconds. The server is running samba version 3.0.25c with kernel 2.6.16.18. I've put up a set of debugging logs at: http://emagiccards.com/james/sambalogs.tar.bz2 Inside are 3 files: smb.conf - the configuration of the samba server log.agard - the level 10 debug log of the copy from samba samba-tcpdump.log - a tcpdump log from the client side of the copy Any help to fix this issue would be greatly appreciated since the file server is pretty unusuable over the WAN. If you need any more information, please let me know. It is imperative that I find out what's happening here. Well, there's always paid support. See the samba web site. testparm yeilds 1 error and 1 warning. Unknown parameter encountered: show preserve case Ignoring unknown parameter show preserve case should probably be short preserve case Server's Role (logon server) NOT ADVISED with domain-level security Loaded services file OK. Server role: ROLE_DOMAIN_BDC When I specifically want samba to use an IP address, I use the IP address in the interfaces clause. eth1 can change when replacing network cards. I've used cifs over WAN a lot over the years. It is slower than ftp and scp but there shouldn't be breaks waiting for ACK. You'll not want to hear it, but this is almost always a network issue; card, router, switch, WAN link box, etc. I like larger packets for most of the uses of a server. So I add to socket options SO_SNDBUF=65536 SO_RCVBUF=65536 Regards, Doug -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.5 (GNU/Linux) Comment: Using GnuPG with SUSE - http://enigmail.mozdev.org iD8DBQFHCAU4FqWysr/jOHMRAs5KAKCiRBH5t8Ke5QU0U9sXQ0+mtl8s7ACfa0ce V2/foUb+PpUUiZ/YModZFFQ= =AIJ8 -END PGP SIGNATURE- Hmm. If it was a hardware issue, why would SCP work flawlessly (as far as I can tell). Both machines have Broadcom BCM5704 NICs. I'll play with the socket options some more and see if it helps. But yeah, the delayed response to the ack is troubling. -- James -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/listinfo/samba
