From: Michal Hocko <mhocko@kernel.org>
To: Baptiste Lepers <baptiste.lepers@gmail.com>
Cc: mgorman@techsingularity.net, akpm@linux-foundation.org,
dhowells@redhat.com, linux-mm@kvack.org, hannes@cmpxchg.org
Subject: Re: Lock overhead in shrink_inactive_list / Slow page reclamation
Date: Fri, 11 Jan 2019 14:59:38 +0100 [thread overview]
Message-ID: <20190111135938.GG14956@dhcp22.suse.cz> (raw)
In-Reply-To: <CABdVr8R2y9B+2zzSAT_Ve=BQCa+F+E9_kVH+C28DGpkeQitiog@mail.gmail.com>
On Fri 11-01-19 16:52:17, Baptiste Lepers wrote:
> Hello,
>
> We have a performance issue with the page cache. One of our workload
> spends more than 50% of it's time in the lru_locks called by
> shrink_inactive_list in mm/vmscan.c.
Who does contend on the lock? Are there direct reclaimers or is it
solely kswapd with paths that are faulting the new page cache in?
--
Michal Hocko
SUSE Labs
next prev parent reply other threads:[~2019-01-11 13:59 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-11 5:52 Lock overhead in shrink_inactive_list / Slow page reclamation Baptiste Lepers
2019-01-11 13:59 ` Michal Hocko [this message]
2019-01-11 17:53 ` Daniel Jordan
2019-01-13 23:12 ` Baptiste Lepers
2019-01-13 23:12 ` Baptiste Lepers
2019-01-14 7:06 ` Michal Hocko
2019-01-14 7:25 ` Baptiste Lepers
2019-01-14 7:25 ` Baptiste Lepers
2019-01-14 7:44 ` Michal Hocko
2019-01-14 15:22 ` Kirill Tkhai
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