On Wed, 6 Jan 2010, Marti Raudsepp wrote:
On Wed, Jan 6, 2010 at 3:23 PM, Dimitrios Apostolou <jimis@gmx.net> wrote:
Timer Stats Version: v0.2 Sample period: 0.000 s 0 total events
Huh? Something's broken with your /proc/timer_stats. Either that, or some application is polling the file at an insane rate. Were you running powertop in the background at this time?
No I wasn't running anything in the background, really stange indeed...
Nothing suspicious in your /proc/interrupts -- I assume the 'processor' module was still loaded at the time you took these samples?
right
I have already compiled a minimal 2.6.31 and a 2.6.32 kernel and the problem seems to be a regression introduced in the former. So I'm trying to find time for a git bisection... Any other ideas?
You can contact people responsible for the 'processor' module. Linux get_maintainer.pl lists these emails for drivers/acpi/processor_core.c:
Len Brown <lenb@kernel.org> Bjorn Helgaas <bjorn.helgaas@hp.com> Andrew Morton <akpm@linux-foundation.org> Yinghai Lu <yinghai@kernel.org> Alex Chiang <achiang@hp.com> linux-acpi@vger.kernel.org linux-kernel@vger.kernel.org
(Yeah, feel free to send an email to all recipients, that's how people usually communicate on LKML)
Thanks for the tips, they are very useful! Dimitris
Marti