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Date: Sat, 7 Sep 2002 13:03:34 -0700
From: William Lee Irwin III <wli@holomorphy.com>
To: Andrew Morton <akpm@digeo.com>
Cc: Paolo Ciarrocchi <ciarrocchi@linuxmail.org>, linux-kernel@vger.kernel.org
Subject: Re: LMbench2.0 results
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Paolo Ciarrocchi wrote:
>> Hi all,
>> I've just ran lmbench2.0 on my laptop.
>> Here the results (again, 2.5.33 seems to be "slow", I don't know why...)

On Sat, Sep 07, 2002 at 09:20:56AM -0700, Andrew Morton wrote:
> The fork/exec/mmap slowdown is the rmap overhead.  I have some stuff
> which partialy improves it.

Hmm, Where does it enter the mmap() path? PTE instantiation is only done
for the VM_LOCKED case IIRC. Otherwise it should be invisible.

Perhaps testing with overcommit on would be useful.


Cheers,
Bill
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