How to obtain what swi1:net is doing?
Коньков Евгений
kes-kes at yandex.ru
Sat Nov 13 01:42:53 UTC 2010
Здравствуйте, Ivan.
Вы писали 12 ноября 2010 г., 1:33:14:
IV> On 11/11/10 20:20, Коньков Евгений wrote:
>> Hi, all
IV> "How to obtain what swi1:net is doing?"
IV> The short answer is: depending on what your network card is, it could be
IV> everything related to TCP/IP-level processing.
IV> In your case, you are doing a lot of work in netgraph and dummynet,
IV> probably shaping, but have high dummynet usage which probably means its
IV> handling the lower level of network IO, probably with a high packet rate.
IV> You might try including the following loader.conf tunables:
IV> net.isr.direct_force=0
IV> net.isr.maxthreads=2
FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs
FreeBSD/SMP: 1 package(s) x 2 core(s) x 2 SMT threads
cpu0 (BSP): APIC ID: 0
cpu1 (AP): APIC ID: 1
cpu2 (AP): APIC ID: 4
cpu3 (AP): APIC ID: 5
ioapic0: Changing APIC ID to 6
ioapic0 <Version 2.0> irqs 0-23 on motherboard
netisr_init: forcing maxthreads to 1 and bindthreads to 0 for device polling
# cat /boot/loader.conf
net.isr.maxthreads=2
maxthreads does not affected
#uname -r
9.0-CURRENT
IV> ... and report if it helps you. (but be careful: here you must measure
IV> 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 sio
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--
С уважением,
Коньков mailto:kes-kes at yandex.ru
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