From: Christoph Lameter <clameter@sgi.com>
To: akpm@linux-foundation.org
Cc: linux-mm@kvack.org
Subject: Re: Support concurrent local and remote frees and allocs on a slab.
Date: Sat, 5 May 2007 21:59:38 -0700 (PDT) [thread overview]
Message-ID: <Pine.LNX.4.64.0705052152060.29770@schroedinger.engr.sgi.com> (raw)
In-Reply-To: <Pine.LNX.4.64.0705042025520.29006@schroedinger.engr.sgi.com>
On Fri, 4 May 2007, Christoph Lameter wrote:
> About 5-10% performance gain on netperf.
Hmmmm... I can take this even further and get another 20% if I take the
critical components of slab_alloc and slab_free and inline them into
kfree, kmem_cache_alloc and friends. I went from 5.8MB without this
patch to now 8 MB/sec with this patch and the rather ugly inlining.
The compiler really creates stupid code and does a lot of stack ops
because slab_alloc and slab_free use too many variables right now.
We should be able to take this even further if we allow arch code to
provide ASM versions of the fast path.
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next prev parent reply other threads:[~2007-05-06 4:59 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-05 3:28 Christoph Lameter
2007-05-06 4:59 ` Christoph Lameter [this message]
2007-05-06 5:45 ` Christoph Lameter
2007-05-06 19:24 ` Andrew Morton
2007-05-07 15:15 ` Christoph Lameter
2007-05-07 18:39 ` Christoph Lameter
2007-05-07 18:54 ` Andrew Morton
2007-05-07 18:58 ` Christoph Lameter
2007-05-07 20:32 ` Andrew Morton
2007-05-07 21:50 ` Andrew Morton
2007-05-07 21:55 ` Christoph Lameter
2007-05-08 0:56 ` Christoph Lameter
2007-05-08 22:05 ` Christoph Lameter
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