On Mon, Dec 03, 2012 at 02:42:08PM -0500, Johannes Weiner wrote: > On Mon, Dec 03, 2012 at 09:30:12AM +0100, Thorsten Leemhuis wrote: > > >> John was able to reproduce the problem quickly with a kernel that > > >> contained the patch from your mail. For details see > > > > > > [stripped: all the glory details of what likely went wrong and lead > > > to the problem john sees or saw] > > > > > > --- > > > From: Johannes Weiner <hannes@xxxxxxxxxxx> > > > Subject: [patch] mm: vmscan: do not keep kswapd looping forever due > > > to individual uncompactable zones > > > > > > When a zone meets its high watermark and is compactable in case of > > > higher order allocations, it contributes to the percentage of the > > > node's memory that is considered balanced. > > > [...] > > > > FYI: I built a kernel with that patch. I've been running on my x86_64 > > machine at home over the weekend and everything was working fine (just > > as without the patch). John gave it a quick try and in > > https://bugzilla.redhat.com/show_bug.cgi?id=866988#c57 reported: > > > > """ > > I just installed > > kernel-3.7.0-0.rc7.git1.2.van.main.knurd.kswap.4.fc18.i686 and ran my > > usual load that triggers the problem. OK so far. I'll check again in > > 24hours, but looking good so far. > > """ > > w00t! Update from John in the BZ (https://bugzilla.redhat.com/show_bug.cgi?id=866988#c62): "Good news. I've now been running both kernel-3.7.0-0.rc7.git1.2.van.main.knurd.kswap.4.fc18.i686 and kernel-3.7.0-0.rc7.git1.2.van.main.knurd.kswap.4.fc18.x86_64 for over 24hours with no evidence of problems with kswapd" Now waiting for results from Jiri, Zdenek and Bruno... -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>