From: Daniel Vetter <daniel@ffwll.ch>
To: Sarah A Sharp <sarah@thesharps.us>
Cc: linux-mm@kvack.org, mgorman@suse.de, intel-gfx@lists.freedesktop.org
Subject: Re: Kswapd 100% CPU since 3.8 on Sandybridge
Date: Mon, 6 Oct 2014 09:25:52 +0200 [thread overview]
Message-ID: <20141006072552.GC26941@phenom.ffwll.local> (raw)
In-Reply-To: <CABe+QzCn_7xm1x62o5d2VoiQrf_7LorhnVOD905Zzd+uu_EuqQ@mail.gmail.com>
On Sat, Oct 04, 2014 at 10:05:20AM -0700, Sarah A Sharp wrote:
> Please excuse the non-wrapped email. My personal system is currently
> b0rked, so I'm sending this in frustration from my phone.
>
> My laptop is currently completely hosed. Disk light on full solid
> Mouse movement sluggish to the point of moving a couple cms per second.
> Firefox window greyed out but not OOM killed yet. When this behavior
> occurred in the past, if I ran top, I would see kswapd taking up 100% of
> one of my two CPUs.
>
> If I can catch the system in time before mouse movement becomes too
> sluggish, closing the browser window will cause kswapd usage to drop, and
> the system goes back to a normal state. If I don't catch it in time, I
> can't even ssh into the box to kill Firefox because the login times out.
> Occasionally Firefox gets OOM killed, but most of the time I have to use
> sysreq keys to reboot the system.
>
> This can be reproduced by using either Chrome or Firefox. Chrome fails
> faster. I'm not sure whether it's related to loading tabs with a bunch of
> images, maybe flash, but it takes around 10-15 tabs being open before it
> starts to fail. I can try to characterize it further.
>
> System: Lenovo x220 Intel Sandy Bridge graphics
> Ubuntu 14.04 with edgers PPA for Mesa
> 3.16.3 kernel
>
> Since around the 3.8 kernel time frame, I've been able to reproduce this
> behavior. I'm pretty sure it was a kernel change.
Hm, doesn't ring any bell for i915 bugs, but to make sure can you please
sample debugfs/dri/0/i915_gem_objects while things go south?
Thanks, Daniel
--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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next prev parent reply other threads:[~2014-10-06 7:25 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CABe+QzA=0YVpQ8rN+3X-cbH6JP1nWTvp2spb93P9PqJhmjBROA@mail.gmail.com>
[not found] ` <CABe+QzA-E40bFFXYJBc663Kx0KrE3xy2uZq5xOH2XL6mFPA6+w@mail.gmail.com>
2014-10-04 17:05 ` Sarah A Sharp
2014-10-06 7:25 ` Daniel Vetter [this message]
2014-10-06 9:37 ` Mel Gorman
2014-10-06 13:32 ` Daniel Vetter
2014-10-26 16:05 ` sarah
2014-10-26 18:20 ` Johannes Weiner
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