[lkml]   [2007]   [May]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: 2.6.21-mm2 - 100% CPU on ksoftirqd/1
On Wed, 09 May 2007 01:23:22 PDT, Andrew Morton said:

Boots up to multiuser mostly OK. However...

It comes up with a screaming ksoftirqd - usually /1 but one boot had /0.
Just sitting there, 100% CPU according to 'top'. Tried 'echo t > /proc/sysrq-trigger' to get
a trace, but it was always running on the other CPU - even after I reniced
it down to 19 and launched 2 'for(;;)' C programs to suck the cycles. It would
be failing to get any CPU - until I did the 'echo t' and then it would be
"running" again. Anybody got any good debugging ideas here?

Oddly enough, the kernel panic I was seeing at X server shutdown, related to
seems to be gone now (not extensively tested - but it did survive one shutdown
without crashing at a point that *had* been a 100% fatal from -rc5-mm3 to 21-mm1.
I wish I understood why.

Replicated with a boot to single-user and an untainted kernel - by that point,
it was spinning at 100% already.

Any ideas how to debug this one?

[unhandled content-type:application/pgp-signature]
 \ /
  Last update: 2007-05-09 18:11    [W:0.255 / U:0.196 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site