Re: Linux 2.4.2 fails to merge mmap areas, 700% slowdown.

From: Kurt Garloff (garloff@suse.de)
Date: Wed Mar 21 2001 - 10:59:48 EST


On Wed, Mar 21, 2001 at 07:41:55AM +0100, Mike Galbraith wrote:
> On 20 Mar 2001, Kevin Buhr wrote:
> > real 60m4.574s
> > user 101m18.260s <-- impossible no?
> > sys 3m23.520s
>
> Why do numbers like this show up? I noticed some of this after having
> enabled SMP on my UP box.

As you have two CPUs, you can spend more time in CPU than your wall clock
shows if you time multithreaded processes or multiple processes. At most
(ideal case) twice as much.

Regards,

-- 
Kurt Garloff  <garloff@suse.de>                          Eindhoven, NL
GPG key: See mail header, key servers         Linux kernel development
SuSE GmbH, Nuernberg, FRG                               SCSI, Security


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