linux-kernel - Re: [Q] Default SLAB allocator

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Message-ID: <alpine.DEB.2.00.1210111558290.6409@chino.kir.corp.google.com>
Date:	Thu, 11 Oct 2012 15:59:19 -0700 (PDT)
From:	David Rientjes <rientjes@...gle.com>
To:	Andi Kleen <andi@...stfloor.org>
cc:	Ezequiel Garcia <elezegarcia@...il.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-mm@...ck.org, Tim Bird <tim.bird@...sony.com>,
	celinux-dev@...ts.celinuxforum.org
Subject: Re: [Q] Default SLAB allocator

On Thu, 11 Oct 2012, Andi Kleen wrote:

> > While I've always thought SLUB was the default and recommended allocator,
> > I'm surprise to find that it's not always the case:
> 
> iirc the main performance reasons for slab over slub have mostly
> disappeared, so in theory slab could be finally deprecated now.
> 

SLUB is a non-starter for us and incurs a >10% performance degradation in 
netperf TCP_RR.
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