[lkml]   [2010]   [Sep]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: Linux
On Mon, Sep 27, 2010 at 10:54:12AM -0700, Greg KH wrote:
> On Mon, Sep 27, 2010 at 12:32:08PM -0400, wrote:
> > I'm not exactly sure what's going on here and I'd like some help
> > figuring out what is. For some inexplicable reason, ever since I started
> > using the 2.6.35.x series with the release, my loadaverages tend to
> > bounce anywhere from as low to .2 to 1.5 - constantly, while the machine
> > seems idle.
> But .34 doesn't show this issue?
> If so, can you run 'git bisect' between the .34 and .35 releases to find
> out where the problem comes in?

.34 does not, that is correct.
> > Consistently, there are no programs in D state in ps aux output,
> > no cpu hogging programs running in top, nothing I can see that should
> > explain the bizzarely high load average.
> Loadaverage can be affected by a driver doing an uninteruptable sleep.
> This doesn't actually cause a load on the system, but it does affect the
> way that number is calcuated. Perhaps that's the problem here.

That would explain a lot.
> > If you have any tips or recommendations on what I should use to
> > investigate this further, please let me know. Once I have ensured to my own
> > satisfaction that I'm not doing something bizzare that's screwing up my
> > machine, I'll make a detailed bug report and start on figuring out how to
> > use git bisect.
> 'man git-bisect' will help with this :)
> thanks,
> greg k-h

Thank you for the tips. If I don't find anything obvious I'll bisect it very
soon, but I'll likely attempt to track backwards from .3 myself since I've
backtracked through patches before. Once I have narrowed it down to a patch
release it'll likely take less time to bisect. (eg, if I know it happened
between 2.6.35-rc1 and rc2 I'd only have to bisect the patches between those
versions, whereas right now I only know positively between 2.6.34 and something went wrong.)

Tim McGrath
[unhandled content-type:application/pgp-signature]
 \ /
  Last update: 2010-09-27 21:11    [W:0.060 / U:2.364 seconds]
©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site