From: Michal Hocko <mhocko@kernel.org>
To: yoma sophian <sophian.yoma@gmail.com>
Cc: linux-mm@kvack.org
Subject: Re: page order 0 allocation fail but free pages are enough
Date: Tue, 24 May 2016 13:50:49 +0200 [thread overview]
Message-ID: <20160524115049.GH8259@dhcp22.suse.cz> (raw)
In-Reply-To: <CADUS3onbkOC=kSsHxVgwK-m-ftmrzH+73RHDAFw_mbLvPGBx6A@mail.gmail.com>
OK, I could have noticed that earlier...
On Tue 24-05-16 19:40:21, yoma sophian wrote:
[...]
> Normal free:56088kB min:2000kB low:2500kB high:3000kB
> active_anon:148332kB inactive_anon:6040kB active_file:1356kB
> inactive_file:5240kB unevictable:0kB isolated(anon):0kB
> isolated(file):0kB present:329728kB managed:250408kB mlocked:0kB
> dirty:120kB writeback:0kB mapped:8108kB shmem:6136kB
> slab_reclaimable:5520kB slab_unreclaimable:26128kB kernel_stack:2720kB
> pagetables:4424kB unstable:0kB bounce:0kB free_cma:55452kB
free-free_cma = 636kB so you are way below the watermark and that is
why your atomic allocation fails (see __zone_watermark_ok). I am not an
expect on CMA but I guess your CMA pool is too large for your load.
--
Michal Hocko
SUSE Labs
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next prev parent reply other threads:[~2016-05-24 11:50 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-23 6:47 yoma sophian
2016-05-23 14:47 ` Michal Hocko
2016-05-23 15:31 ` yoma sophian
2016-05-23 19:00 ` Michal Hocko
2016-05-24 11:40 ` yoma sophian
2016-05-24 11:50 ` Michal Hocko [this message]
2016-05-24 15:06 ` yoma sophian
2016-05-25 2:11 ` yoma sophian
2016-05-25 6:31 ` Michal Hocko
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