From: Michal Hocko <mhocko@kernel.org>
To: LEROY Christophe <christophe.leroy@c-s.fr>
Cc: linuxppc-dev@lists.ozlabs.org, linux-mm@kvack.org,
David Rientjes <rientjes@google.com>
Subject: Re: OOM killer invoked while still one forth of mem is available
Date: Fri, 27 Apr 2018 10:27:15 +0200 [thread overview]
Message-ID: <20180427082715.GD17484@dhcp22.suse.cz> (raw)
In-Reply-To: <20180426222917.Horde.cu42u5sTkcbGdcY0VUmclQ1@messagerie.si.c-s.fr>
On Thu 26-04-18 22:29:17, LEROY Christophe wrote:
> Michal Hocko <mhocko@kernel.org> a ecrit :
[...]
> > Yes, show_migration_types. But I do not see why unmovable pageblocks
> > should block the allocation. This is a GFP_KERNEL allocation request
> > essentially - thus unmovable itself. This smells like a bug. We are way
> > above reserves which could block the allocation.
>
> Any suggestion on how to investigate that bug ? Anything to trace ?
try to enable allocator and vmscan tracepoints. Maybe it will tell
something.
--
Michal Hocko
SUSE Labs
prev parent reply other threads:[~2018-04-27 8:27 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-24 19:26 christophe leroy
2018-04-25 19:57 ` David Rientjes
2018-04-26 6:10 ` Christophe LEROY
2018-04-26 13:11 ` Michal Hocko
2018-04-26 13:28 ` Christophe LEROY
2018-04-26 19:05 ` Michal Hocko
2018-04-26 20:29 ` LEROY Christophe
2018-04-27 8:27 ` Michal Hocko [this message]
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