From: Eric Dumazet <dada1@cosmosbay.com>
To: Pekka J Enberg <penberg@cs.helsinki.fi>
Cc: Andrew Morton <akpm@linux-foundation.org>,
mpm@selenic.com, Christoph Lameter <clameter@sgi.com>,
"ast@domdv.de" <ast@domdv.de>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] slab: deal with NULL pointers passed to kmem_cache_free
Date: Tue, 20 Mar 2007 08:56:56 +0100 [thread overview]
Message-ID: <45FF93C8.4070602@cosmosbay.com> (raw)
In-Reply-To: <Pine.LNX.4.64.0703200943430.3622@sbz-30.cs.Helsinki.FI>
Pekka J Enberg a écrit :
> Thanks for the profile. I still wonder where exactly thouse super-hot
> call-sites are...
>
In this case, it's a typical network server
Each time a packet is sent to or received from network, network stack has to
allocate/free a skb (kmem_cache_alloc()/kmem_cache_free() and its data
(kmalloc/kfree)
Other paths are for example dentries allocations, file allocations, ... really
many spots for some workloads.
next prev parent reply other threads:[~2007-03-20 7:57 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-19 8:27 [PATCH] slab: deal with NULL pointers passed to kmem_cache_free Pekka J Enberg
2007-03-19 11:31 ` Andrew Morton
2007-03-19 11:40 ` Pekka J Enberg
2007-03-19 17:08 ` Christoph Lameter
2007-03-19 17:31 ` Pekka J Enberg
2007-03-19 20:49 ` Matt Mackall
2007-03-19 21:10 ` Andrew Morton
2007-03-19 21:25 ` Pekka Enberg
2007-03-19 21:41 ` Andrew Morton
2007-03-19 21:49 ` Matt Mackall
2007-03-20 7:06 ` Pekka Enberg
2007-03-20 18:41 ` Christoph Lameter
2007-03-21 11:42 ` Pekka J Enberg
2007-03-20 7:14 ` Pekka Enberg
2007-03-20 7:39 ` Eric Dumazet
2007-03-20 7:47 ` Pekka J Enberg
2007-03-20 7:56 ` Eric Dumazet [this message]
2007-03-21 10:11 ` Jarek Poplawski
2007-03-21 12:13 ` Pekka Enberg
2007-03-21 13:31 ` Jarek Poplawski
2007-03-21 13:36 ` Pekka J Enberg
2007-03-21 14:11 ` Rafael J. Wysocki
2007-03-21 14:41 ` Pekka Enberg
2007-03-21 16:30 ` Andrew Morton
2007-03-21 17:54 ` Jörn Engel
2007-03-21 18:32 ` Pekka Enberg
2007-03-21 14:45 ` Jarek Poplawski
2007-03-19 22:04 ` Jörn Engel
2007-03-19 21:16 ` Christoph Lameter
2007-03-19 21:44 ` Matt Mackall
2007-03-19 23:32 ` Andreas Steinmetz
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