From: Manfred Spraul <manfred@colorfullife.com>
To: Andrew Morton <akpm@digeo.com>
Cc: Ed Tomlinson <tomlins@cam.org>, linux-kernel@vger.kernel.org
Subject: Re: [patch 3/4] slab reclaim balancing
Date: Thu, 26 Sep 2002 16:13:28 +0200 [thread overview]
Message-ID: <3D931608.3040702@colorfullife.com> (raw)
> Slab caches no longer hold onto completely empty pages. Instead, pages
> are freed as soon as they have zero objects. This is possibly a
> performance hit for slabs which have constructors, but it's doubtful.
It could be a performance hit for slab with just one object - e.g the
page sized names cache, used in every syscall that has a path name as a
parameter.
Ed, have you benchmarked that there is no noticable slowdown?
e.g. test the time needed for stat("."). on UP, otherwise the SMP arrays
would perform the caching.
--
Manfred
next reply other threads:[~2002-09-26 14:08 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-09-26 14:13 Manfred Spraul [this message]
2002-09-26 14:20 ` [patch 3/4] slab reclaim balancing William Lee Irwin III
2002-09-26 15:24 ` Manfred Spraul
2002-09-26 17:37 ` Andrew Morton
2002-09-26 18:47 ` Manfred Spraul
2002-09-26 19:49 ` Andrew Morton
2002-09-26 20:49 ` Manfred Spraul
2002-09-26 21:39 ` Andrew Morton
2002-09-27 0:41 ` Ed Tomlinson
2002-09-27 17:24 ` Manfred Spraul
2002-09-27 18:26 ` Andrew Morton
2002-09-27 19:38 ` Manfred Spraul
2002-09-27 19:52 ` Andrew Morton
2002-09-27 15:59 ` Manfred Spraul
-- strict thread matches above, loose matches on Subject: below --
2002-09-26 4:08 Andrew Morton
2002-09-26 11:39 ` Ed Tomlinson
2002-09-26 15:09 ` Ed Tomlinson
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