I have been noticing similar results with my server. The Samba machine is a dual processor Xeon with 1 gig of ram running Fedora Core 1. The NT 4 machine is a dual PIII 500 machine with 512mb of ram.
I still have an NT 4 server and a Samba 3 machine that I setup. A 25 meg copied from the NT machine takes about 4 seconds. The same file takes 8 seconds on the Samba 3 machine. I had to play with the SO_SNDBUF and SO_RVCBUF. It doesn't like them set to 8192. 4096 works about as well as it can. Doug ------------------------------------------ [EMAIL PROTECTED] Systems Support Specialist IV Georgia Institute of Technology - Savannah 210 Technology Circle Savannah, GA 31407 Phone: 912.966.7956 Fax: 912.966.7836 On Tue, 27 Apr 2004, Paul Gienger wrote: > Have you tested a non-samba protocol, FTP perhaps? Many ftp programs > will give you an estimate of the speed realtime as well, fwiw, although > they can be a little buggy at times on estimations. > > Andrew Gray wrote: > > >Here's a couple suggestions that we've played with. > > > >- What kernel are you running on your Samba box? We got significantly > >better performance when we switched to 2.6.5 over 2.4.22. > >- Do you have debugging turned on in Samba? Or anything other than log > >level = 0? That can slow things down a fair bit as well. > > > >----- Original Message ----- > >From: "Alexander Lazarevich" <[EMAIL PROTECTED]> > >To: "Samba Mailing List" <[EMAIL PROTECTED]> > >Sent: Monday, April 26, 2004 3:30 PM > >Subject: [Samba] Performance: Samba 3 vs. Windows 2003 > > > > > > > > > >>Samba guru's: > >> > >>Our Samba 3 network performance is half that of Windows 2003 Server. I > >>really want to stay with samba/unix, but half the performance? I'm hoping > >>someone can point me in the right direction so we can keep using > >>samba/unix. I'll try to give as much detail without giving pages and > >>pages of benchmark numbers. If someone wants to see numbers, I'll send > >>them: > >> > >>Fileserver is Dell PE2600, Dual Xeon 18GHz, 2GB memory, Gig NIC. System > >>is dual boot RHEL3-AS with an ext3 filesystem and Windows 2003 Server > >>with NTFS. The fileserving disk is a SATA-SCSI RAID enclosure. Bonnie++ > >>and iozone both show that the RAID enclosure can do 80MB/sec writes and > >>40MB/sec reads on the ext3 in linux. Benchmarks in windows 2003 are very > >>similar. Why it gets faster writes than read, I don't know, and I don't > >>care right now. What I'm worried about is our samba network performance. > >> > >>Clients are Windows XP/2K/NT4 pro with all patches installed and Gig NICs. > >>All the clients can netperf to the server at 60+MB/sec, some even faster. > >>No collisions on the NICs, nothing wrong with the network. There is a > >>cisco Gig switch inbetween the client and the server as well. > >> > >>Here is the bottom line: > >> > >>When the server is running samba 3, the clients get 12-13MB/sec. > >> > >>When the server is running windows 2003, the clients get 24-26MB/sec. > >> > >>Keep in mind the server hardware is exactly the same, the only thing I > >>change is the software. Windows 2003 beets up Samba 3, hands down. > >> > >>However, all this testing is done by just drag and drop, and looking at > >>the clock to time it. Not the best way to do it, but I don't know of > >>another way now, suggestions welcome. The difference is obvious and > >>consistent: 500MB file in samba 3 writes to disk in 42 seconds, but writes > >>to windows 2003 disk in 21 seconds. I can produce the same results on all > >>of our clients any time of the day. > >> > >>I've tried changing the smb.conf socket options (TCP_NODELAY, SO_SNDBUF, > >>etc.) to 65523, 242xxx, whatever. /etc/init.d/smb restart, then try again. > >>No change in performance whatsoever. Still 12-13MB/sec. I've also set > >>other options in smb.conf, such as xmit, write size, read size, but > >>nothing seems to change the fact that samba 3 can't do more than > >>12-13MB/sec. > >> > >>I've also searched the list, and found some people had success in > >>performance issues by changing the SO_SNDBUF, but they didn't list any > >>benchmark numbers. Maybe they were happy with 12-13MB/sec, but I'm not, > >>especially if something else can get 25MB/sec. > >> > >>Any input is welcome. > >> > >>Alex > >>--- --- > >> Alex Lazarevich | Systems Administrator | Imaging Technology Group > >> Beckman Institute | University of Illinois | www.itg.uiuc.edu > >>--- --- > >> > >> > >> > >> > >>-- > >>To unsubscribe from this list go to the following URL and read the > >>instructions: http://lists.samba.org/mailman/listinfo/samba > >> > >> > >> > > > > > > > > -- > Paul Gienger Office: 701-281-1884 > Applied Engineering Inc. Cell: 701-306-6254 > Information Systems Consultant Fax: 701-281-1322 > URL: www.ae-solutions.com mailto:[EMAIL PROTECTED] > > > -- > 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
