linux-kernel - Re: [patch] slub: default min_partial to at least highest cpus per node

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Message-ID: <49DBBC1F.6000407@cs.helsinki.fi>
Date:	Tue, 07 Apr 2009 23:48:31 +0300
From:	Pekka Enberg <penberg@...helsinki.fi>
To:	Christoph Lameter <cl@...ux.com>
CC:	David Rientjes <rientjes@...gle.com>, linux-kernel@...r.kernel.org
Subject: Re: [patch] slub: default min_partial to at least highest cpus per
  node

Christoph Lameter wrote:
> I am not sure about the benefit of this. If the page allocator finally
> improves in performance then we can reduce the mininum number of partial
> slabs kept and also do pass through for all sizes >2k.

Sure, we can do that, but it still makes sense to adjust the partial 
list sizes based on per-node CPU count. So I'm inclined to apply the 
patch I suggested if it shows performance gains on one or more of the 
relevant benchmarks (sysbench, tbench, hackbench, netperf, etc.).
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