Messages in this thread | | | Date | Wed, 21 Mar 2001 17:45:30 +0100 (CET) | From | Mike Galbraith <> | Subject | Re: Linux 2.4.2 fails to merge mmap areas, 700% slowdown. |
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On Wed, 21 Mar 2001, Kurt Garloff wrote:
> 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.
Yes. I'm so used to UP numbers I didn't think. I saw user larger than real on my UP box yesterday during some testing, and then seeing this post... oops.
-Mike
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