From: Vladimir Davydov <vdavydov@parallels.com>
To: Johannes Weiner <hannes@cmpxchg.org>
Cc: <akpm@linux-foundation.org>, <mhocko@suse.cz>, <cl@linux.com>,
<glommer@gmail.com>, <linux-mm@kvack.org>,
<linux-kernel@vger.kernel.org>
Subject: Re: [PATCH -mm 0/8] memcg: reparent kmem on css offline
Date: Mon, 7 Jul 2014 21:14:15 +0400 [thread overview]
Message-ID: <53BAD567.8060506@parallels.com> (raw)
In-Reply-To: <20140707142506.GB1149@cmpxchg.org>
07.07.2014 18:25, Johannes Weiner:
> In addition, Tejun made offlined css iterable and split css_tryget()
> and css_tryget_online(), which would allow memcg to pin the css until
> the last charge is gone while continuing to iterate and reclaim it on
> hierarchical pressure, even after it was offlined.
One more question.
With reparenting enabled, the number of cgroups (lruvecs) that must be
iterated on global reclaim is bound by the number of live containers,
while w/o reparenting it's practically unbound, isn't it? Won't it be
the source of latency spikes?
Thanks.
next prev parent reply other threads:[~2014-07-07 17:14 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-07 12:00 [PATCH -mm 0/8] memcg: reparent kmem on css offline Vladimir Davydov
2014-07-07 12:00 ` [PATCH -mm 1/8] memcg: add pointer from memcg_cache_params to owner cache Vladimir Davydov
2014-07-07 12:00 ` [PATCH -mm 2/8] memcg: keep all children of each root cache on a list Vladimir Davydov
2014-07-07 15:24 ` Christoph Lameter
2014-07-07 15:45 ` Vladimir Davydov
2014-07-07 12:00 ` [PATCH -mm 3/8] slab: guarantee unique kmem cache naming Vladimir Davydov
2014-07-07 12:00 ` [PATCH -mm 4/8] slub: remove kmemcg id from create_unique_id Vladimir Davydov
2014-07-07 12:00 ` [PATCH -mm 5/8] memcg: rework non-slab kmem pages charge path Vladimir Davydov
2014-07-07 12:00 ` [PATCH -mm 6/8] memcg: introduce kmem context Vladimir Davydov
2014-07-07 12:00 ` [PATCH -mm 7/8] memcg: move some kmem definitions upper Vladimir Davydov
2014-07-07 12:00 ` [PATCH -mm 8/8] memcg: reparent kmem context on memcg offline Vladimir Davydov
2014-07-07 14:25 ` [PATCH -mm 0/8] memcg: reparent kmem on css offline Johannes Weiner
2014-07-07 15:40 ` Vladimir Davydov
2014-07-08 22:05 ` Johannes Weiner
2014-07-09 7:25 ` Vladimir Davydov
2014-07-07 17:14 ` Vladimir Davydov [this message]
2014-07-08 22:19 ` Johannes Weiner
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