12 messages in com.xensource.lists.xen-ia64-develRe: [Xen-ia64-devel] PATCH: rewrite v...
FromSent OnAttachments
Tristan Gingold08 May 2007 21:10.diff
Alex Williamson10 May 2007 13:15 
Tristan Gingold10 May 2007 22:22 
Xu, Anthony10 May 2007 22:54 
tgin...@free.fr11 May 2007 01:17 
Xu, Anthony11 May 2007 02:26 
Xu, Anthony11 May 2007 02:41 
tgin...@free.fr11 May 2007 02:53 
Alex Williamson11 May 2007 10:37 
Tristan Gingold28 May 2007 05:53 
Alex Williamson28 May 2007 06:30 
Tristan Gingold28 May 2007 07:45 
Subject:Re: [Xen-ia64-devel] PATCH: rewrite vcpu_get_psr
From:Alex Williamson (alex@hp.com)
Date:05/28/2007 06:30:31 AM
List:com.xensource.lists.xen-ia64-devel

On Mon, 2007-05-28 at 14:53 +0200, Tristan Gingold wrote:

On Thu, May 10, 2007 at 02:15:34PM -0600, Alex Williamson wrote:

On Wed, 2007-05-09 at 06:10 +0200, Tristan Gingold wrote:

Hi,

a stripped-down version of a previous patch: reimplement vcpu_get_psr.

Should be a noop, I don't think performance should be affected.

Unfortunately...

with patch:

real 6m0.483s user 21m10.680s sys 1m18.470s

without patch:

real 4m47.767s user 16m55.060s sys 0m53.240s

Hi,

I can now reproduce this slow-down.

However I don't understand your figures: how can real time be less than user time ? Isn't real time the elapsed time ?

Parallel build, -j4. The real time is the elapsed time, user is cumulative across all 4 CPUs. Thanks,

Alex

-- Alex Williamson HP Open Source & Linux Org.

_______________________________________________ Xen-ia64-devel mailing list Xen-@lists.xensource.com http://lists.xensource.com/xen-ia64-devel