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Date: Thu, 7 Apr 2016 23:14:13 +0200
From: Jesper Dangaard Brouer <>
To: Kees Cook <>
Cc:, Thomas Garnier <>,
 Lameter <>, Pekka Enberg <>,
        David Rientjes
        Joonsoo Kim <>,
        Andrew Morton
        Greg Thelen <>,
        LKML <>, Linux-MM <>,
        Laura Abbott <>
Subject: Re: [RFC v1] mm: SLAB freelist randomization

On Wed, 6 Apr 2016 14:45:30 -0700 Kees Cook <> wrote:

> On Wed, Apr 6, 2016 at 12:35 PM, Thomas Garnier <> wrote:
> > re-used on slab creation for performance.  
> I'd like to see some benchmark results for this so the Kconfig can
> include the performance characteristics. I recommend using hackbench
> and kernel build times with a before/after comparison.

It looks like it only happens on init, right? (Thus must bench tools
might not be the right choice).

My slab tools for benchmarking the fastpath is here:

And I also carry a version of Christoph's slab bench tool:

Best regards,
  Jesper Dangaard Brouer
  MSc.CS, Principal Kernel Engineer at Red Hat
  Author of

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