From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail143.messagelabs.com (mail143.messagelabs.com [216.82.254.35]) by kanga.kvack.org (Postfix) with SMTP id AF8A86B007E for ; Sun, 17 Jul 2011 04:52:22 -0400 (EDT) Message-ID: <4E22A2BC.2080900@gmx.de> Date: Sun, 17 Jul 2011 10:52:12 +0200 From: Thomas Sattler MIME-Version: 1.0 Subject: Re: [PATCH 0/4] Fix compaction stalls due to accounting errors in isolated page accounting References: <1307459225-4481-1-git-send-email-mgorman@suse.de> In-Reply-To: <1307459225-4481-1-git-send-email-mgorman@suse.de> Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Mel Gorman Cc: Andrew Morton , Andrea Arcangeli , Minchan Kim , Ury Stankevich , Andi Kleen , linux-mm , linux-kernel Hi there ... > Re-verification from testers that these patches really do fix their > problems would be appreciated. Even if hangs disappear, please confirm > that the values for nr_isolated_anon and nr_isolated_file in *both* > /proc/zoneinfo and /proc/vmstat are sensible (i.e. usually zero). I applied these patches to 2.6.38.8 and it run for nearly a month without any problems. Even Though I did not check nr_isolated_*. As (at least) patch3 made it into 2.6.39.3 I did not apply the others any more. And it occurred again this morning: sysload at 2, iowait at 80% on an idle (single core) system $ grep nr_isolated /proc/zoneinfo /proc/vmstat /proc/zoneinfo: nr_isolated_anon 0 /proc/zoneinfo: nr_isolated_file 1 /proc/zoneinfo: nr_isolated_anon 0 /proc/zoneinfo: nr_isolated_file 4294967295 /proc/zoneinfo: nr_isolated_anon 0 /proc/zoneinfo: nr_isolated_file 0 /proc/vmstat:nr_isolated_anon 0 /proc/vmstat:nr_isolated_file 0 I captured several SysRq-* logs, in case they're of interest. Thomas -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org