Messages in this thread | | | From | Jason Lynch <> | Subject | Re: [BUG?,FEATURE?] One core idles with 4 nice and 1 regular process | Date | Thu, 18 Jun 2009 01:02:21 +0000 (UTC) |
| |
On Tue, 16 Jun 2009 19:09:59 +0000, Jason Lynch wrote: > If I can provide any additional information to help, I'll be happy to > oblige.
I discovered a post on lkml from last October, wherein a user reports what sounds like the same issue on 2.6.25.9.
http://article.gmane.org/gmane.linux.kernel/748316/
In addition, Ubuntu's current 2.6.28 kernel appears to be immune from the problem, suggesting a possible configuration issue, or at least an option that can trigger/avoid the problem. However, comparing the configs is difficult due to the number of added, changed, and removed options between kernel versions. The differences that stood out in my initial comparisons were CONFIG_RT_GROUP_SCHED and CONFIG_CPUSETS, but I haven't yet had an opportunity to test either of them, and neither sounds especially promising.
I won't personally be able to do any more extensive kernel testing for perhaps a couple of weeks. However, if this is merely a configuration issue, it seems rather opaque to me, as I can't imagine this behavior being desirable in any case.
| |