Date: Tue, 24 Jan 2012 11:33:35 +0000 From: Vlad Galu <dudu@dudu.ro> To: Marcin Markowski <mmarkowski@leon.pl> Cc: freebsd-performance@freebsd.org Subject: Re: Performance problem using Intel X520-DA2 Message-ID: <CA%2BFTnKMeRs7ScWxLYSnDsmQukdCPGKWsyn-apHu=sPP%2BdOeyXQ@mail.gmail.com> In-Reply-To: <c160f7de9e8370e4e0e636524ac5ca9c@leon.pl> References: <a231a44c6c803075c7b456a6189ff6ce@leon.pl> <52C581907BBB4B4AAF55D14F46BAAF2F@dudu.ro> <c160f7de9e8370e4e0e636524ac5ca9c@leon.pl>
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On Tue, Jan 24, 2012 at 11:27 AM, Marcin Markowski <mmarkowski@leon.pl> wro= te: > On 24.01.2012 00:34, Vlad Galu wrote: >> >> -- >> Good, fast and cheap: pick any two. >> >> >> On Monday, January 23, 2012 at 8:20 PM, Marcin Markowski wrote: >> >>> Hello, >>> >>> We use FreeBSD as sniffer (libpcap programs) and we experience >>> performance problems when incoming traffic is greater than 7.5Gbps/s. >>> If we check 'top' we see that first irq from network card is using >>> 100% CPU. I've tested this on FreeBSD 8.2-RELEASE and 9.0-RELEASE >>> (on 9.0 we can see also kernel thread named {ix0 que} using 100% CPU), >>> and both systems behave the same. In logs we see also: >>> interrupt storm detected on "irq268:"; throttling interrupt source >>> >>> Our server platform is Intel SR2600URBRP, 2x Xeon X5650, 6GB RAM and >>> NIC Intel X520-DA2. >>> >>> I'm not sure if problem is with NIC or motherboard in SR2600URBRP, >>> because everything is fine when we use other server configuration: >>> Intel SR1630GP, 1x Xeon X3450, 8GB RAM, NIC X520-DA2 >>> >>> My /boot/loader.conf: >>> kern.ipc.nmbclusters=3D262144 >>> hw.ixgbe.rxd=3D2048 >>> hw.ixgbe.txd=3D2048 >>> hw.ixgbe.num_queues=3D16 >>> >>> /etc/sysctl.conf >>> hw.intr_storm_threshold=3D10000 >>> >> >> Hi Marcin, >> >> Have a look at Luigi's excellent netmap framework [1]. >> >> [1] http://info.iet.unipi.it/~luigi/netmap/ > > > =A0Hi Vlad, > > > I tried to compile the kernel with NETMAP on FreeBSD 8 and 9, but I get > warnings and > the compilation ends. > > cc1: warnings being treated as errors > ../../../dev/netmap/netmap.c: In function 'netmap_memory_init': > ../../../dev/netmap/netmap.c:1557: warning: format '%d' expects type 'int= ', > but argument 7 has type 'size_t' > ../../../dev/netmap/netmap.c:1564: warning: format '%d' expects type 'int= ', > but argument 7 has type 'size_t' > ../../../dev/netmap/netmap.c: In function 'netmap_memory_fini': > ../../../dev/netmap/netmap.c:1607: warning: format '%d' expects type 'int= ', > but argument 2 has type 'size_t' > ../../../dev/netmap/netmap.c: In function 'netmap_init': > ../../../dev/netmap/netmap.c:1636: warning: format '%d' expects type 'int= ', > but argument 2 has type 'size_t' > *** Error code 1 > > I'll try HEAD and see if it will be the same. > Hi Marcin, Yes, I manually patched the sources. The format string should be %zd. --=20 Good, fast & cheap. Pick any two.
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