[Samba] Samba 3: bad read performance
jra at samba.org
Fri Apr 18 12:33:20 GMT 2008
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.
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