From: Christoph Lameter <cl@gentwo.org>
To: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Vladimir Davydov <vdavydov@parallels.com>,
akpm@linux-foundation.org, rientjes@google.com,
penberg@kernel.org, hannes@cmpxchg.org, mhocko@suse.cz,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH -mm v3 8/8] slab: do not keep free objects/slabs on dead memcg caches
Date: Mon, 30 Jun 2014 10:49:03 -0500 (CDT) [thread overview]
Message-ID: <alpine.DEB.2.11.1406301048070.19422@gentwo.org> (raw)
In-Reply-To: <20140627060534.GC9511@js1304-P5Q-DELUXE>
On Fri, 27 Jun 2014, Joonsoo Kim wrote:
> Christoph,
> Is it tolerable result for large scale system? Or do we need to find
> another solution?
The overhead is pretty intense but then this is a rare event I guess?
It seems that it is much easier on the code and much faster to do the
periodic reaping. Why not simply go with that?
WARNING: multiple messages have this Message-ID (diff)
From: Christoph Lameter <cl@gentwo.org>
To: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Vladimir Davydov <vdavydov@parallels.com>,
akpm@linux-foundation.org, rientjes@google.com,
penberg@kernel.org, hannes@cmpxchg.org, mhocko@suse.cz,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH -mm v3 8/8] slab: do not keep free objects/slabs on dead memcg caches
Date: Mon, 30 Jun 2014 10:49:03 -0500 (CDT) [thread overview]
Message-ID: <alpine.DEB.2.11.1406301048070.19422@gentwo.org> (raw)
In-Reply-To: <20140627060534.GC9511@js1304-P5Q-DELUXE>
On Fri, 27 Jun 2014, Joonsoo Kim wrote:
> Christoph,
> Is it tolerable result for large scale system? Or do we need to find
> another solution?
The overhead is pretty intense but then this is a rare event I guess?
It seems that it is much easier on the code and much faster to do the
periodic reaping. Why not simply go with that?
--
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next prev parent reply other threads:[~2014-06-30 15:49 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-12 20:38 [PATCH -mm v3 0/8] memcg/slab: reintroduce dead cache self-destruction Vladimir Davydov
2014-06-12 20:38 ` Vladimir Davydov
2014-06-12 20:38 ` [PATCH -mm v3 1/8] memcg: cleanup memcg_cache_params refcnt usage Vladimir Davydov
2014-06-12 20:38 ` Vladimir Davydov
2014-06-12 20:38 ` [PATCH -mm v3 2/8] memcg: destroy kmem caches when last slab is freed Vladimir Davydov
2014-06-12 20:38 ` Vladimir Davydov
2014-06-12 20:38 ` [PATCH -mm v3 3/8] memcg: mark caches that belong to offline memcgs as dead Vladimir Davydov
2014-06-12 20:38 ` Vladimir Davydov
2014-06-12 20:38 ` [PATCH -mm v3 4/8] slub: don't fail kmem_cache_shrink if slab placement optimization fails Vladimir Davydov
2014-06-12 20:38 ` Vladimir Davydov
2014-06-12 20:38 ` [PATCH -mm v3 5/8] slub: make slab_free non-preemptable Vladimir Davydov
2014-06-12 20:38 ` Vladimir Davydov
2014-06-12 20:38 ` [PATCH -mm v3 6/8] memcg: wait for kfree's to finish before destroying cache Vladimir Davydov
2014-06-12 20:38 ` Vladimir Davydov
2014-06-12 20:38 ` [PATCH -mm v3 7/8] slub: make dead memcg caches discard free slabs immediately Vladimir Davydov
2014-06-12 20:38 ` Vladimir Davydov
2014-06-13 16:54 ` Christoph Lameter
2014-06-13 16:54 ` Christoph Lameter
2014-06-24 7:50 ` Joonsoo Kim
2014-06-24 7:50 ` Joonsoo Kim
2014-06-24 8:25 ` Vladimir Davydov
2014-06-24 8:25 ` Vladimir Davydov
2014-06-24 9:42 ` [PATCH -mm] slub: kmem_cache_shrink: check if partial list is empty under list_lock Vladimir Davydov
2014-06-24 9:42 ` Vladimir Davydov
2014-06-12 20:38 ` [PATCH -mm v3 8/8] slab: do not keep free objects/slabs on dead memcg caches Vladimir Davydov
2014-06-12 20:38 ` Vladimir Davydov
2014-06-12 20:41 ` Vladimir Davydov
2014-06-12 20:41 ` Vladimir Davydov
2014-06-24 7:25 ` Joonsoo Kim
2014-06-24 7:25 ` Joonsoo Kim
2014-06-24 7:42 ` Vladimir Davydov
2014-06-24 7:42 ` Vladimir Davydov
2014-06-24 12:28 ` [PATCH -mm] slab: set free_limit for dead caches to 0 Vladimir Davydov
2014-06-24 12:28 ` Vladimir Davydov
2014-06-24 7:38 ` [PATCH -mm v3 8/8] slab: do not keep free objects/slabs on dead memcg caches Joonsoo Kim
2014-06-24 7:38 ` Joonsoo Kim
2014-06-24 7:48 ` Vladimir Davydov
2014-06-24 7:48 ` Vladimir Davydov
2014-06-25 13:45 ` Vladimir Davydov
2014-06-25 13:45 ` Vladimir Davydov
2014-06-27 6:05 ` Joonsoo Kim
2014-06-27 6:05 ` Joonsoo Kim
2014-06-30 15:49 ` Christoph Lameter [this message]
2014-06-30 15:49 ` Christoph Lameter
2014-07-01 7:46 ` Vladimir Davydov
2014-07-01 7:46 ` Vladimir Davydov
2014-06-25 14:39 ` [PATCH] slab: document why cache can have no per cpu array on kfree Vladimir Davydov
2014-06-25 14:39 ` Vladimir Davydov
2014-06-25 16:19 ` Christoph Lameter
2014-06-25 16:19 ` Christoph Lameter
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