Date: Wed, 21 Apr 2010 10:04:09 -0500 From: Brandon Gooch <jamesbrandongooch@gmail.com> To: Stephen Sanders <ssanders@softhammer.net> Cc: freebsd-performance@freebsd.org Subject: Re: FreeBSD 8.0 ixgbe Poor Performance Message-ID: <y2y179b97fb1004210804s6ca12944qf194f3a6d8c33cfe@mail.gmail.com> In-Reply-To: <4BCF0C9A.10005@softhammer.net> References: <4BCF0C9A.10005@softhammer.net>
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On Wed, Apr 21, 2010 at 9:32 AM, Stephen Sanders <ssanders@softhammer.net> wrote: > I am running speed tests on a pair of systems equipped with Intel 10Gbps > cards and am getting poor performance. > > iperf and tcpdump testing indicates that the card is running at roughly > 2.5Gbps max transmit/receive. > > My attempts at turning fiddling with netisr, polling, and varying the > buffer sizes has been fruitless. =A0I'm sure there is something that I'm > missing so I'm hoping for suggestions. > > There are two systems that are connected head to head via =A0cross over > cable. =A0The two systems have the same hardware configuration. =A0The > hardware is as follows: > > 2 Intel E5430 (Quad core) @ 2.66 Ghz > Intel S5000PAL Motherboard > 16GB Memory > > My iperf command line for the client is: > > iperf -t 10 -c 169.0.0.1 -w 2.5M -l 2.5M > > My TCP dump test command lines are: > > tcpdump -i ix0 -w/dev/null > tcpreplay -i ix0 -t -l 0 -K ./test.pcap If you're running 8.0-RELEASE, you might try updating to 8-STABLE. Jack Vogel recently committed updated Intel NIC driver code: http://svn.freebsd.org/viewvc/base/stable/8/sys/dev/ixgbe/ -Brandon
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