[Xen-devel] Re: [PATCH 04/18] Nested Virtualization: p2m cleanup

[Christoph Egger <Christoph.Egger@xxxxxxx>]

On Tuesday 20 April 2010 11:29:18 Tim Deegan wrote:
> At 10:20 +0100 on 20 Apr (1271758826), Christoph Egger wrote:
> > On Tuesday 20 April 2010 11:12:32 Tim Deegan wrote:
> > > At 08:41 +0100 on 20 Apr (1271752877), Christoph Egger wrote:
> > > > On Friday 16 April 2010 12:45:35 Tim Deegan wrote:
> > > > > Nacked pending performance eval.
> > > > >
> > > > > BTW, if perf turns out not be a problem, I welcome this with open
> > > > > arms; always nice to see a patch that removes a lot of code.
> > > >
> > > > kernbench performance numbers on 64bit xen:
> > >
> > > Looking good. :)
> >
> > Yes.
> >
> > > What was the guest?
> >
> > SLES10SP3
>
> 64bit, HVM?
>
> > > And what about 32bit Xen?
> >
> > I provide the numbers when I have them.

The kernbench performance number on 32bit xen:

w/o patch:
Average Half load -j 3 Run (std deviation):
Elapsed Time 499.244 (1.22218)
User Time 618.294 (0.839184)
System Time 932.474 (2.1815)
Percent CPU 310 (0)
Context Switches 71327.2 (624.386)
Sleeps 42207.4 (236.626)

Average Optimal load -j 16 Run (std deviation):
Elapsed Time 438.332 (1.02721)
User Time 636.393 (19.0873)
System Time 963.355 (32.6052)
Percent CPU 342.8 (34.5761)
Context Switches 200392 (136051)
Sleeps 47424.1 (5501.64)

with patch:
Average Half load -j 3 Run (std deviation):
Elapsed Time 1047.51 (3.25506)
User Time 895.362 (1.32624)
System Time 2488.95 (10.9768)
Percent CPU 322.6 (0.547723)
Context Switches 91687.2 (970.45)
Sleeps 42411.2 (199.601)

Average Optimal load -j 16 Run (std deviation):
Elapsed Time 1008.92 (2.60045)
User Time 939.244 (46.2882)
System Time 2688.56 (210.631)
Percent CPU 352.9 (31.9424)
Context Switches 306264 (226339)
Sleeps 47920.2 (5814.98)


The guest was SLES10SP3 32bit.

Christoph



-- 
---to satisfy European Law for business letters:
Advanced Micro Devices GmbH
Karl-Hammerschmidt-Str. 34, 85609 Dornach b. Muenchen
Geschaeftsfuehrer: Andrew Bowd, Thomas M. McCoy, Giuliano Meroni
Sitz: Dornach, Gemeinde Aschheim, Landkreis Muenchen
Registergericht Muenchen, HRB Nr. 43632


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