linux-kernel - Re: [PATCH -mm v2 8/8] slab: make dead memcg caches discard free slabs immediately

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:	Fri, 13 Jun 2014 11:34:39 -0500 (CDT)
From:	Christoph Lameter <cl@...two.org>
To:	Joonsoo Kim <iamjoonsoo.kim@....com>
cc:	Vladimir Davydov <vdavydov@...allels.com>,
	akpm@...ux-foundation.org, rientjes@...gle.com, penberg@...nel.org,
	hannes@...xchg.org, mhocko@...e.cz, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org
Subject: Re: [PATCH -mm v2 8/8] slab: make dead memcg caches discard free
 slabs immediately

On Thu, 12 Jun 2014, Joonsoo Kim wrote:

> BTW, I have a question about cache_reap(). If there are many kmemcg
> users, we would have a lot of slab caches and just to traverse slab
> cache list could take some times. Is it no problem?

Its a big problem and one of the reasons that SLUB was developed. Cache
reaping caused noticable random delays to processing which was
significantly impacting HPC loads of SGI.


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/