Samba 3: bad read performance
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From: Dmitry V Shurupov on 17 Apr 2008 14:00 After fixing a hardware problem (different cntrollers in PCI-X slots) we've got better results (unfortunately, not in Samba) [MByte/s]: Read Write disk 400 200 ftp 223 180 samba 28 90 (FTP result is given for 2 streams. 1 stream is about 111 MByte/s for reading.) However, Samba speed is still inadmissible. On Чтв, 2008-04-17 at 15:46 +0400, Dmitry V Shurupov wrote: > And... Our testing results (MByte/s): > > Read Write > disk 190 135 > ftp 111 111 > samba 23 90 -- Dmitry Shurupov, http://www.shurupov.ru/ -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/listinfo/samba
From: Jeremy Allison on 18 Apr 2008 08:40 On Thu, Apr 17, 2008 at 03:46:56PM +0400, Dmitry V Shurupov wrote: > Hi all! > > > We use Samba 3 server for some video stuff (editing, rendering, and so > on) -- that's why performance is critical. We've tried a lot smb.conf > options, but Samba can't satisfy our requirements. > > > Our server configuration is as following: > * Hard drive: RAID5 (8 x Seagate 7200.10), 3ware 9550SX-8LP controller > * NICs (trunked): 2 x Broadcom NetXtreme BCM5704 > * Processor: Opteron 270 > * RAM: 4 Gb > * File system: XFS > * Operating system: Gentoo Linux (kernel 2.6.24-r3) > * Samba version: 3.0.28, 3.0.28a > > Our client configuration is as following: > * Processor: 2 x Opteron 270 > * RAM: 4 Gb > * NICs (trunked): 2 x Broadcom NetXtreme BCM5704, 4 x NIC Intel > Corporation 82546GB. > * Operating system: Gentoo Linux (kernel 2.6.23-r9) > > (We test Samba with our router to get better results.) > > Our server & client are connected with Allied Telesis AT-9448T/SP. > > > And... Our testing results (MByte/s): > > Read Write > disk 190 135 > ftp 111 111 > samba 23 90 > > (With 5 connections we get the same: 5 x 23 MByte/s.) > > We've tested our Samba server with: > > 1) time cat file > /dev/null (on mounted SMB directory) > 2) bonnie & bonnie++ (on mounted SMB directory) > 3) time cp file /tmp/file (on mounted SMB directory) > 4) smbclient > > We've tried SMBFS and CIFS, different oplock and socket options ("read" > performance varies from 17 to 25 MByte/s). Can you test the latest CIFSFS code from Steve French, as well as the latest Samba 3.2 code ? We've added the ability for CIFSFS to do 16mb streaming read/writes, which should significantly help a set up like yours. Jeremy. -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/listinfo/samba
From: Adam Williams on 18 Apr 2008 13:50 Broadcom cards are known to be not so great (on Dell Poweredge servers anyway). I'd probably replace them with some gigabit intel NICs in the server and make sure the client's tcp/ip packets are flowing out of the intel NICs to it also and see if that helps. Dmitry V Shurupov wrote: > Hi all! > > > We use Samba 3 server for some video stuff (editing, rendering, and so > on) -- that's why performance is critical. We've tried a lot smb.conf > options, but Samba can't satisfy our requirements. > > > Our server configuration is as following: > * Hard drive: RAID5 (8 x Seagate 7200.10), 3ware 9550SX-8LP controller > * NICs (trunked): 2 x Broadcom NetXtreme BCM5704 > * Processor: Opteron 270 > * RAM: 4 Gb > * File system: XFS > * Operating system: Gentoo Linux (kernel 2.6.24-r3) > * Samba version: 3.0.28, 3.0.28a > > Our client configuration is as following: > * Processor: 2 x Opteron 270 > * RAM: 4 Gb > * NICs (trunked): 2 x Broadcom NetXtreme BCM5704, 4 x NIC Intel > Corporation 82546GB. > * Operating system: Gentoo Linux (kernel 2.6.23-r9) > > (We test Samba with our router to get better results.) > > Our server & client are connected with Allied Telesis AT-9448T/SP. > > > And... Our testing results (MByte/s): > > Read Write > disk 190 135 > ftp 111 111 > samba 23 90 > > (With 5 connections we get the same: 5 x 23 MByte/s.) > > We've tested our Samba server with: > > 1) time cat file > /dev/null (on mounted SMB directory) > 2) bonnie & bonnie++ (on mounted SMB directory) > 3) time cp file /tmp/file (on mounted SMB directory) > 4) smbclient > > We've tried SMBFS and CIFS, different oplock and socket options ("read" > performance varies from 17 to 25 MByte/s). > > > Samba HOWTO tells: > >> The Samba server uses TCP to talk to the client, so if you are trying >> > to see if it performs well, you should really compare it to programs > that use the same protocol. The most readily available programs for file > transfer that use TCP are ftp or another TCP-based SMB server. > (http://www.samba.org/samba/docs/man/Samba-HOWTO-Collection/speed.html#id2687128) > > So, our Samba "read" results are really sad. What can we do to make > Samba perform better? > > > -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/listinfo/samba
From: Dmitry V Shurupov on 18 Apr 2008 15:30 > Can you test the latest CIFSFS code from Steve French, as well > as the latest Samba 3.2 code ? We've added the ability for > CIFSFS to do 16mb streaming read/writes, which should significantly > help a set up like yours. > > Jeremy. Could you define more exactly the "latest code", please? We've installed Samba 3.2pre2 on our server and got no (better) result while testing with Windows client. Did you mean pre2 release or current git version of Samba 3.2 branch? And the same for CIFSFS: if you're not about CIFSFS 1.52 included in latest stable Linux kernel (2.6.25)--where can we find this code? -- Dmitry Shurupov, http://www.shurupov.ru/ -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/listinfo/samba
From: Jeremy Allison on 21 Apr 2008 05:50
On Fri, Apr 18, 2008 at 11:21:46PM +0400, Dmitry V Shurupov wrote: > > Could you define more exactly the "latest code", please? We've > installed Samba 3.2pre2 on our server and got no (better) result while > testing with Windows client. Did you mean pre2 release or current git > version of Samba 3.2 branch? No, newer code won't change the result for Windows, but I thought you were complaining about Linux client performance. > And the same for CIFSFS: if you're not about CIFSFS 1.52 included in > latest stable Linux kernel (2.6.25)--where can we find this code? Steve's latest code can do the 16mb streaming reads/writes with Samba 3.2. I'm CC:ing Steve so he can give you exact version numbers. Jeremy. -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/listinfo/samba |