[Xen-devel] ksoftirqd time

[Brian Hays <brian.hays@xxxxxxxxx>]

Hi,

I'm getting some excessive looking CPU time for ksoftirqd (on CPU0)
when running Xen on a Hyperthreaded P4 3Ghz. Any one else seeing
this?...
[root@localhost ~]# top
top - 21:35:23 up 1 day, 12:18,  3 users,  load average: 0.06, 0.02, 0.00
Tasks:  53 total,   1 running,  52 sleeping,   0 stopped,   0 zombie
Cpu(s):  0.0% us,  0.5% sy,  0.0% ni, 86.0% id,  0.0% wa, 13.5% hi,  0.0% si
Mem:    351960k total,   149568k used,   202392k free,    23152k buffers
Swap:  3148732k total,      688k used,  3148044k free,    93588k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
    3 root      34  19     0    0    0 S  0.0  0.0 150:58.34 ksoftirqd/0
  215 root      15   0     0    0    0 S  1.3  0.0   7:35.51 xenblkd
 1241 root      16   0  3948  560  468 S  0.0  0.2   3:45.44 nifd
 1960 root      16   0 15680 9136 2564 S  0.0  2.6   3:42.15 python
 1207 root      16   0  1788  476  404 S  0.0  0.1   2:29.08 irqbalance
    6 root      10  -5     0    0    0 S  0.0  0.0   2:04.54 events/0
   89 root      15   0     0    0    0 S  0.0  0.0   0:35.13 pdflush
   90 root      15   0     0    0    0 S  0.0  0.0   0:23.78 pdflush
   91 root      15   0     0    0    0 S  0.0  0.0   0:20.49 kswapd0
 1958 root      16   0  2084  488  416 S  0.0  0.1   0:16.08 xcs
  333 root      15   0     0    0    0 S  0.0  0.0   0:14.95 kjournald
 1271 root      16   0  4340 1644 1356 S  0.0  0.5   0:06.49 sshd
    1 root      16   0  3252  556  484 S  0.0  0.2   0:05.63 init
 8203 root      16   0  7724 2236 1816 S  0.0  0.6   0:04.38 sshd
 2134 root       0 -20     0    0    0 S  0.0  0.0   0:02.81 loop0
 1285 root      16   0  5288  808  696 S  0.0  0.2   0:02.01 crond
 1197 root      16   0  2644  604  512 S  0.0  0.2   0:01.97 syslogd
 1340 root      16   0  4632 2552 1564 S  0.0  0.7   0:00.71 hald
    5 root      34  19     0    0    0 S  0.0  0.0   0:00.52 ksoftirqd/1

Thanks,
Brian

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