From: "Pekka Enberg" <penberg@cs.helsinki.fi>
To: clameter@sgi.com
Cc: "linux-mm@kvack.org" <linux-mm@kvack.org>
Subject: Re: [patch 3/5] slub: Support 4k kmallocs again to compensate for page allocator slowness
Date: Thu, 14 Feb 2008 09:01:49 +0200 (EET) [thread overview]
Message-ID: <ZDX5gaw0.1202972509.9474750.penberg@cs.helsinki.fi> (raw)
In-Reply-To: <20080214040313.855530089@sgi.com>
On 2/14/2008, "Christoph Lameter" <clameter@sgi.com> wrote:
> Currently we hand off PAGE_SIZEd kmallocs to the page allocator in the
> mistaken belief that the page allocator can handle these allocations
> effectively. However, measurements indicate a mininum slowdown by the
> factor of 8 (and that is only SMP, NUMA is much worse) vs the slub
> fastpath which causes regressions in tbench.
Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi>
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parent reply other threads:[~2008-02-14 7:01 UTC|newest]
Thread overview: expand[flat|nested] mbox.gz Atom feed
[parent not found: <20080214040313.855530089@sgi.com>]
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