interrupt threads CPU usage in FreeBSD 8.0

Oleg Bulyzhin oleg at FreeBSD.org
Tue Nov 3 11:53:27 UTC 2009


Yes, something is wrong (8.0-RC2):

last pid:  7327;  load averages:  0.31,  0.53,  0.55    up 0+03:51:35  14:36:22
81 processes:  5 running, 60 sleeping, 16 waiting
CPU 0:  0.0% user,  0.0% nice,  0.0% system,  0.4% interrupt, 99.6% idle
CPU 1:  0.0% user,  0.0% nice, 26.7% system,  0.0% interrupt, 73.3% idle
CPU 2:  0.0% user,  0.0% nice, 25.6% system,  0.0% interrupt, 74.4% idle
CPU 3:  0.0% user,  0.0% nice,  3.8% system,  0.0% interrupt, 96.2% idle
Mem: 22M Active, 11M Inact, 157M Wired, 64K Cache, 23M Buf, 3754M Free
Swap: 2048M Total, 2048M Free

  PID USERNAME PRI NICE   SIZE    RES STATE   C   TIME   WCPU COMMAND
   10 root     171 ki31     0K    64K CPU0    0 226:34 99.07% {idle: cpu0}
   10 root     171 ki31     0K    64K RUN     3 221:56 95.56% {idle: cpu3}
   10 root     171 ki31     0K    64K CPU1    1 179:58 73.10% {idle: cpu1}
   10 root     171 ki31     0K    64K CPU2    2 175:32 68.07% {idle: cpu2}
    0 root     -68    0     0K   128K -       2  55:20  1.76% {em1 taskq}
   11 root     -32    -     0K   256K WAIT    0   2:10  0.29% {swi4: clock}
    0 root     -68    0     0K   128K -       1  50:42  0.00% {em0 taskq}

em0 & em1 taskqueues should have wcpu ~25%

-- 
Oleg.

================================================================
=== Oleg Bulyzhin -- OBUL-RIPN -- OBUL-RIPE -- oleg at rinet.ru ===
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