From: "Manfred Spraul" <manfred@colorfullife.com>
To: "Andrea Arcangeli" <andrea@suse.de>
Cc: <linux-kernel@vger.kernel.org>,
"Alan Cox" <alan@lxorguk.ukuu.org.uk>, <torvalds@transmeta.com>
Subject: Re: Purpose of the mm/slab.c changes
Date: Sun, 9 Sep 2001 17:18:00 +0200 [thread overview]
Message-ID: <001201c13942$b1bec9a0$010411ac@local> (raw)
In-Reply-To: <3B9B4CFE.E09D6743@colorfullife.com> <20010909162613.Q11329@athlon.random>
>
> it provides lifo allocations from both partial and unused slabs.
>
lifo/fifo for unused slabs is obviously superflous - free is free, it
doesn't matter which free page is used first/last.
The partial slabs are already lifo: if a slab goes from full to partial,
it's added to the head of the partial list.
> You
> should benchmark it with a real load, not with dummy
> allocations/freeing.
>
Did you run any benchmarks? If yes, could you post them?
What I did was checking the number of branches in the hot path
(increased), the code length (increased) and execution time with dummy
loads (slower).
--
Manfred
next prev parent reply other threads:[~2001-09-09 15:18 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-09-09 11:05 Purpose of the mm/slab.c changes Manfred Spraul
2001-09-09 14:26 ` Andrea Arcangeli
2001-09-09 15:18 ` Manfred Spraul [this message]
2001-09-09 15:33 ` Andrea Arcangeli
2001-09-11 18:41 ` Manfred Spraul
2001-09-11 19:36 ` Andrea Arcangeli
2001-09-11 20:43 ` Manfred Spraul
2001-09-12 14:18 ` Andrea Arcangeli
2001-09-09 16:12 ` Alan Cox
2001-09-09 16:25 ` Linus Torvalds
2001-09-09 16:47 ` Alan Cox
2001-09-09 16:55 ` Manfred Spraul
2001-09-09 17:01 ` Linus Torvalds
2001-09-09 17:22 ` Manfred Spraul
2001-09-09 17:27 ` arjan
2001-09-09 17:35 ` Andrea Arcangeli
2001-09-09 17:30 ` Andrea Arcangeli
2001-09-09 17:59 ` Fwd: 2.4.10-pre6 ramdisk driver broken? won't compile Stephan Gutschke
2001-09-09 20:26 ` Purpose of the mm/slab.c changes Rik van Riel
2001-09-15 0:29 ` Albert D. Cahalan
2001-09-09 20:23 ` Rik van Riel
2001-09-09 20:44 ` Davide Libenzi
2001-09-09 20:45 ` Rik van Riel
2001-09-09 20:58 ` Davide Libenzi
2001-09-22 12:28 ` Ralf Baechle
2001-09-22 21:03 ` Davide Libenzi
2001-09-22 21:36 ` David S. Miller
2001-09-10 2:28 ` Daniel Phillips
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