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Message-ID: <50C0A2EF.6010404@redhat.com> Date: Thu, 06 Dec 2012 14:51:43 +0100 From: Zdenek Kabelac <zkabelac@...hat.com> To: Johannes Weiner <hannes@...xchg.org> CC: Mel Gorman <mgorman@...e.de>, Andrew Morton <akpm@...ux-foundation.org>, Rik van Riel <riel@...hat.com>, George Spelvin <linux@...izon.com>, Johannes Hirte <johannes.hirte@....tu-ilmenau.de>, Thorsten Leemhuis <fedora@...mhuis.info>, Tomas Racek <tracek@...hat.com>, Jan Kara <jack@...e.cz>, Dave Hansen <dave@...ux.vnet.ibm.com>, Josh Boyer <jwboyer@...il.com>, Valdis.Kletnieks@...edu, Jiri Slaby <jslaby@...e.cz>, Bruno Wolff III <bruno@...ff.to>, Linus Torvalds <torvalds@...ux-foundation.org>, linux-mm@...ck.org, linux-kernel@...r.kernel.org Subject: Re: kswapd craziness in 3.7 Dne 4.12.2012 10:05, Zdenek Kabelac napsal(a): > Dne 3.12.2012 20:18, Johannes Weiner napsal(a): >> Szia Zdenek, >> >> On Mon, Dec 03, 2012 at 04:23:15PM +0100, Zdenek Kabelac wrote: >>> Ok, bad news - I've been hit by kswapd0 loop again - >>> my kernel git commit cc19528bd3084c3c2d870b31a3578da8c69952f3 again >>> shown kswapd0 for couple minutes on CPU. >>> >>> It seemed to go instantly away when I've drop caches >>> (echo 3 >/proc/sys/vm/drop_cache) >>> (After that I've had over 1G free memory) >> >> Any chance you could retry with this patch on top? >> >> --- >> From: Johannes Weiner <hannes@...xchg.org> >> Subject: [patch] mm: vmscan: do not keep kswapd looping forever due >> to individual uncompactable zones >> >> --- >> mm/vmscan.c | 16 ---------------- >> 1 file changed, 16 deletions(-) >> >> diff --git a/mm/vmscan.c b/mm/vmscan.c > > > Ok, I'm running now b69f0859dc8e633c5d8c06845811588fe17e68b3 (-rc8) > with your patch. I'll be able to give some feedback after couple > days (if I keep my machine running without reboot - since before So to just give some positive info - with 2 1/2 day uptime, several suspend/resumes, ff at 1.4GB I still have just 29 seconds for kswapd0 process. So the patch above might have helped - but I'll look for a few more days. Zdenek -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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