Messages in this thread |  | | | Date | Wed, 14 Jul 2010 10:34:41 +0200 | | Subject | Re: kmemleak, cpu usage jump out of nowhere | | From | Zeno Davatz <> |
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On Wed, Jul 14, 2010 at 10:31 AM, Damien Wyart <damien.wyart@free.fr> wrote:
>> On Wed, Jul 14, 2010 at 9:12 AM, Zeno Davatz <zdavatz@gmail.com> wrote: >> > I got a new Intel core-8 i7 processor. > >> > I am on kernel uname -a > >> > Linux zenogentoo 2.6.35-rc5 #97 SMP Tue Jul 13 16:13:25 CEST 2010 i686 >> > Intel(R) Core(TM) i7 CPU 960 @ 3.20GHz GenuineIntel GNU/Linux > >> > Sometimes in the middle of nowhere all of a sudden all of my 8-cores >> > are at 100% CPU usage and my machine really lags and hangs and is not >> > useable anymore. Some random process just grabs a bunch CPUs according >> > to htop. > > * Pekka Enberg <penberg@cs.helsinki.fi> [2010-07-14 11:05]: >> Why did you enable CONFIG_DEBUG_KMEMLEAK? Memory leak scanning is >> likely the source of these pauses. > > I am seeing the same problem with a Core i7 920 and 2.6.35-rc5, and I do > not have CONFIG_DEBUG_KMEMLEAK enabled, so I think this is not related. > > I do not see anything special in the logs, just the load becoming mad > and almost preventing ssh access. I've been seeing that since the first > 2.6.35 rc I tested (-rc2 or -rc3, I don't remember) and I did not have > time to report it before but I was surprised nobody else did. No problem > with 2.6.34 and 2.6.34.1.
same with me. My last build I tested was 2.6.34-rc7. No problems there. No CPU jumps out of nowhere.
It is like any application all of a sudden use 400% CPU i.e. htop.
Best Zeno
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