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Message-ID: <45FF93C8.4070602@cosmosbay.com>
Date: Tue, 20 Mar 2007 08:56:56 +0100
From: Eric Dumazet <dada1@...mosbay.com>
To: Pekka J Enberg <penberg@...helsinki.fi>
CC: Andrew Morton <akpm@...ux-foundation.org>, mpm@...enic.com,
Christoph Lameter <clameter@....com>,
"ast@...dv.de" <ast@...dv.de>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] slab: deal with NULL pointers passed to kmem_cache_free
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.
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