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Date: Fri, 04 May 2012 11:45:16 +0200 From: Mike Galbraith <efault@....de> To: "Eric W. Biederman" <ebiederm@...ssion.com> Cc: Andrew Morton <akpm@...ux-foundation.org>, Oleg Nesterov <oleg@...hat.com>, LKML <linux-kernel@...r.kernel.org>, Pavel Emelyanov <xemul@...allels.com>, Cyrill Gorcunov <gorcunov@...nvz.org>, Louis Rilling <louis.rilling@...labs.com> Subject: Re: [PATCH] Re: [RFC PATCH] namespaces: fix leak on fork() failure On Fri, 2012-05-04 at 00:55 -0700, Eric W. Biederman wrote: > CLONE_NEWUSER? I presume you have applied my latest user namespace > patches? Otherwise you are running completely half baked code. I Removed CLONE_NEWUSER flag. > hackbench? Which kernel are you running. Hackbench in some kernels is > really good at triggering cache ping-pong effects with pids, and creds. Not when pinned. 3.0 kernel without the debug stuff enabled in 3.4.git. marge:/usr/local/tmp/starvation # taskset -c 3 ./hackbench Running with 10*40 (== 400) tasks. Time: 0.868 marge:/usr/local/tmp/starvation # taskset -c 3 ./hackbench -namespace Running with 10*40 (== 400) tasks. Time: 7.582 marge:/usr/local/tmp/starvation # taskset -c 3 ./hackbench -namespace -all Running with 10*40 (== 400) tasks. Time: 29.677 -Mike -- 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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