Date: Wed, 1 Dec 2010 10:09:31 -0800 From: Jack Vogel <jfvogel@gmail.com> To: Vlad Galu <dudu@dudu.ro> Cc: freebsd-net@freebsd.org Subject: Re: igb dual-port adapter 1200Mbps limit - what to tune? Message-ID: <AANLkTimvNKsEwrwNtQWjDk4f3Wq3ek7cKUZxQ3z%2BtDnd@mail.gmail.com> In-Reply-To: <AANLkTi=omVK5u-1vZx799uV7%2B5=%2BoR2vjDJs=7X%2Bw7ZZ@mail.gmail.com> References: <20101110110428.GA3505@traktor.dnepro.net> <20101201175401.GA69269@traktor.dnepro.net> <AANLkTi=omVK5u-1vZx799uV7%2B5=%2BoR2vjDJs=7X%2Bw7ZZ@mail.gmail.com>
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And why don't you use the driver in 7.4 PRERELEASE (2.0.7) and eliminate any inevitable questions about fixes you don't have. Jack On Wed, Dec 1, 2010 at 10:06 AM, Vlad Galu <dudu@dudu.ro> wrote: > On Wed, Dec 1, 2010 at 6:54 PM, Eugene Perevyazko <john@dnepro.net> wrote: > > On Wed, Nov 10, 2010 at 01:04:28PM +0200, Eugene Perevyazko wrote: > >> > >> I have a router running RELENG_7 with two dual-port igbs - igb0 and igb1 > are on > >> 82575 on intel s5520ur mb and igb2 and igb3 are on 82576 on ET dual-port > card. > >> 82576 is in 8x slot. > >> Main traffic flows from igb0+igb1 to igb2+igb3, less traffic goes back. > >> There's no traffic flow in directions igb0 - igb1 and igb2 - igb3. > >> > >> There are vlans on all interfaces. > >> > >> igb0 and igb1 are outbound links. > >> igb2 and igb3 are connected to switch. > >> CPU is E5620@2.4GHz, 8 cores, irqs bound to different cores skipping HT > ones. > >> Tried 2 queues and 1 queue per iface, neither hitting cpu limit. > >> > >> The problem is that traffic through igb2+igb3 is limited at around > 1200Mbps Tx > >> while I was hoping for 1600-1800Mbps Tx. > >> > > > > I'd like to say that now this host is forwarding 1710 Mb/s @ 189 kpps in > one direction + 411 Mb/s @ 140 kpps in reverse direction (30 minutes > average). > > The following changes were made: > > - no lagg in use > > - only one vlan left instead of 5 vlans > > - added motherboard module 'HP NC360T PCIe DP Gigabit Server Adapter > (n1e5132)' with 2 em interfaces (only one used) > > - 3 interfaces are connected to hosts with patchcords, not through > switch > > - hyperthreading turned off in bios > > - igb driver patched to reduce irq rate and make it tunable (patch > follows) > > - hw.igb.num_queues=4, dev.igb.*.enable_aim=0, > dev.igb.*.default_intrrate=4000 the last sysctl is added in patch) > > - igb queues manually repinned to different cores > > - ipfw rules minimized > > Can you please run a test with IPFW disabled? It's best to avoid using > a firewall where throughput is the primary goal. > > > > > igb driver used is 1.9.6/RELENG_7, igb.c version 1.3.2.12 > > > > Can't say for sure whether there is a key change or is it all changes > summed up, > > sorry. > > > > -- > > Eugene Perevyazko > > > > _______________________________________________ > > freebsd-net@freebsd.org mailing list > > http://lists.freebsd.org/mailman/listinfo/freebsd-net > > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" > > > > > > -- > Good, fast & cheap. Pick any two. > _______________________________________________ > freebsd-net@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" >
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