Date: Fri, 12 Nov 2010 00:33:14 +0100 From: Ivan Voras <ivoras@freebsd.org> To: freebsd-questions@freebsd.org Subject: Re: How to obtain what swi1:net is doing? Message-ID: <ibhufr$1gk$1@dough.gmane.org> In-Reply-To: <4910622844.20101111212049@yandex.ru>
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On 11/11/10 20:20, Коньков Евгений wrote: > Hi, all "How to obtain what swi1:net is doing?" The short answer is: depending on what your network card is, it could be everything related to TCP/IP-level processing. In your case, you are doing a lot of work in netgraph and dummynet, probably shaping, but have high dummynet usage which probably means its handling the lower level of network IO, probably with a high packet rate. You might try including the following loader.conf tunables: net.isr.direct_force=0 net.isr.maxthreads=2 ... and report if it helps you. (but be careful: here you must measure real-world performance not CPU usage!) > last pid: 65736; load averages: 3.54, 4.46, 3.92 up 4+07:51:26 21:19:08 > 215 processes: 8 running, 195 sleeping, 12 waiting > CPU 0: 2.9% user, 0.0% nice, 42.9% system, 11.4% interrupt, 42.9% idle > CPU 1: 0.0% user, 0.0% nice, 54.3% system, 17.1% interrupt, 28.6% idle > CPU 2: 2.9% user, 0.0% nice, 57.1% system, 5.7% interrupt, 34.3% idle > CPU 3: 0.0% user, 0.0% nice, 45.7% system, 17.1% interrupt, 37.1% idle > Mem: 502M Active, 87M Inact, 324M Wired, 24M Cache, 112M Buf, 1053M Free > Swap: 20G Total, 72K Used, 20G Free > > PID USERNAME PRI NICE SIZE RES STATE C TIME WCPU COMMAND > 15 root -44 - 0K 8K CPU1 3 31.4H 71.39% swi1: net > 35 root -68 - 0K 8K CPU0 0 21.7H 50.20% dummynet > 14 root 171 ki31 0K 8K RUN 0 74.8H 42.87% idle: cpu0 > 11 root 171 ki31 0K 8K CPU3 3 78.4H 31.79% idle: cpu3 > 13 root 171 ki31 0K 8K RUN 1 80.3H 29.69% idle: cpu1 > 12 root 171 ki31 0K 8K RUN 2 76.9H 23.49% idle: cpu2 > 1698 root -68 - 0K 8K sleep 2 312:30 15.38% ng_queue0 > 1700 root -68 - 0K 8K sleep 3 313:02 15.09% ng_queue2 > 1699 root -68 - 0K 8K sleep 2 314:18 14.89% ng_queue1 > 1701 root -68 - 0K 8K sleep 1 312:54 14.06% ng_queue3 > 63829 www 50 0 185M 123M select 0 0:47 4.05% httpd > 59213 root 96 0 400M 61940K CPU3 2 32:24 2.98% rtorrent > 16 root -32 - 0K 8K WAIT 2 129:41 0.39% swi4: clock siohelp
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