Messages in this thread | | | Date | Thu, 19 May 2011 11:30:59 +0900 | From | KAMEZAWA Hiroyuki <> | Subject | Re: Kernel falls apart under light memory pressure (i.e. linking vmlinux) |
| |
On Wed, 18 May 2011 22:15:53 -0400 Andrew Lutomirski <luto@mit.edu> wrote:
> On Wed, May 18, 2011 at 1:17 AM, Minchan Kim <minchan.kim@gmail.com> wrote: > > On Wed, May 18, 2011 at 4:22 AM, Andrew Lutomirski <luto@mit.edu> wrote:
> > Andrew, Could you test this patch with !pgdat_balanced patch? > > I think we shouldn't see OOM message if we have lots of free swap space. > > > > == CUT_HERE == > > diff --git a/mm/vmscan.c b/mm/vmscan.c > > index f73b865..cc23f04 100644 > > --- a/mm/vmscan.c > > +++ b/mm/vmscan.c > > @@ -1341,10 +1341,6 @@ static inline bool > > should_reclaim_stall(unsigned long nr_taken, > > if (current_is_kswapd()) > > return false; > > > > - /* Only stall on lumpy reclaim */ > > - if (sc->reclaim_mode & RECLAIM_MODE_SINGLE) > > - return false; > > - > > /* If we have relaimed everything on the isolated list, no stall */ > > if (nr_freed == nr_taken) > > return false; > > > > > > > > Then, if you don't see any unnecessary OOM but still see the hangup, > > could you apply this patch based on previous? > > With this patch, I started GNOME and Firefox, turned on swap, and ran > test_mempressure.sh 1500 1400 1. Instant panic (or OOPS and hang or > something -- didn't get the top part). Picture attached -- it looks > like memcg might be involved. I'm running F15, so it might even be > doing something. >
Hmm, what kernel version do you use ? I think memcg is not guilty because RIP is shrink_page_list(). But ok, I'll dig this. Could you give us your .config ?
Thanks, -Kame
> I won't be able to get netconsole dumps until next week because I'm > out of town and only have this one computer here. > > I haven't tried the other patch. > > Also, the !pgdat_balanced fix plus the if (need_resched()) return > false patch just hung once on 2.6.37-rc9. I don't know what triggered > it. Maybe yum. > > --Andy
-- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |