linux-kernel - Re: [PATCH 11/11] mm: consider compaction feedback also for costly allocation

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Date:	Tue, 5 Apr 2016 14:46:34 +0200
From:	Michal Hocko <mhocko@...nel.org>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Johannes Weiner <hannes@...xchg.org>,
	Mel Gorman <mgorman@...e.de>,
	David Rientjes <rientjes@...gle.com>,
	Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>,
	Joonsoo Kim <js1304@...il.com>,
	Hillf Danton <hillf.zj@...baba-inc.com>, linux-mm@...ck.org,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 11/11] mm: consider compaction feedback also for costly
 allocation

Attached you can find both the tool to fragment memory and the script it
calls in my testing.

I was executing this as follows (on 2G machine with 2G swap space):
echo 1 > /proc/sys/vm/overcommit_memory
echo 1 > /proc/sys/vm/compact_memory
/root/fragment-mem-and-run /root/alloc_hugepages.sh 1920M 250M
-- 
Michal Hocko
SUSE Labs

View attachment "fragment-mem-and-run.c" of type "text/x-csrc" (2648 bytes)

Download attachment "alloc_hugepages.sh" of type "application/x-sh" (537 bytes)