Date: Mon, 6 Oct 2008 00:17:57 -0700 From: Jeremy Chadwick <koitsu@FreeBSD.org> To: Bartosz Stec <admin@kkip.pl> Cc: freebsd-stable@freebsd.org Subject: Re: fxp performance with POLLING Message-ID: <20081006071757.GA13076@icarus.home.lan> In-Reply-To: <48E9B809.5080309@kkip.pl> References: <48E62ABA.6070901@kkip.pl> <20081005075956.GX36572@elvis.mu.org> <48E9B809.5080309@kkip.pl>
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On Mon, Oct 06, 2008 at 09:02:33AM +0200, Bartosz Stec wrote: > Alfred Perlstein wrote: >> * Bartosz Stec <admin@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 >>> normal? >>> >>> 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 >>> options=8<VLAN_MTU> >>> 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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