fxp performance with POLLING
koitsu at FreeBSD.org
Mon Oct 6 07:17:59 UTC 2008
On Mon, Oct 06, 2008 at 09:02:33AM +0200, Bartosz Stec wrote:
> Alfred Perlstein wrote:
>> * Bartosz Stec <admin at kkip.pl> [081003 07:23] wrote:
>>> Hello again :)
>>> With POLLING enabled I experience about 10%-25% performance drop when
>>> copying files over network. Tested with both SAMBA and NFS. Is it
>>> FreeBSD 7.1-PRERELEASE #0: Sat Sep 6 01:52:12 CEST 2008
>>> fxp0: <Intel 82801DB (ICH4) Pro/100 Ethernet> port 0xc800-0xc83f mem
>>> 0xe1021000-0xe1021fff irq 20 at device 8.0 on pci1
>>> # ifconfig fxp0
>>> fxp0: flags=9843<UP,BROADCAST,RUNNING,SIMPLEX,LINK0,MULTICAST>
>>> metric 0 mtu 1500
>>> ether 00:20:ed:42:87:13
>>> inet 192.168.0.2 netmask 0xffffff00 broadcast 192.168.0.255
>>> media: Ethernet autoselect (100baseTX <full-duplex>)
>>> status: active
>>> BTW overall SAMBA performance still sucks on 7.1-pre as much as on
>>> RELENG_5 ...:( - 7.5 MB/s peak.
>> 7.5MB is 75% effeciency of a 100mbit card. Not amazing, but
>> not "sucks".
>> Where do you see faster performance?
>> Between windows machines on the same hardware or linux server?
> It sucks because it is a peak performance. About 5-6 MB/s average. I
> tried polling only because I found some suggestions on mailing lists,
> that it could improve performance with SAMBA on FreeBSD. As you see at
> the top of this thread - not in my case :) I also tried sysctl tunings,
> and smb.conf settings, also suggested on maling lists, with no or very
> little improvements noticed. Most of suggestions unfortunately end with
> "change OS to Linux if you want to use SAMBA". I think I will try to
> change NIC to 1Gbit - hope that helps :) Or maybe there's some "FreeBSD
> and SAMBA tuning guide" which I didn't found?
Can you please test network I/O using something like netperf or one of
the other network-benchmark tools and not things like NFS or Samba
which rely on disk I/O and other aspects?
| Jeremy Chadwick jdc at parodius.com |
| Parodius Networking http://www.parodius.com/ |
| UNIX Systems Administrator Mountain View, CA, USA |
| Making life hard for others since 1977. PGP: 4BD6C0CB |
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