On Thu, Nov 05, 2009 at 08:49:50AM +0100, Rémi BERNIER wrote:
> Hi everyone,
>
> Bad news...
> I just test with Xen 3.4.1 modules 2.6.26-6, but the performance are far
> from being the same quality with a physical server win2k3
> If anyone have another idea..
>
You really need to profile _why_ it's slower. you need to measure
exactly _what_ is using the cpu, or causing the slowness.
You need to monitor in dom0 (using "xm top", "iostat 1", etc) and *also*
in the windows guest, using whatever tools windows has.
Also, why aren't you running oracle on Linux? would be a lot easier to
debug..
-- Pasi
> Rémi
>
> Pasi,
> I just finished the swingbench test with a dedicated CPU but it's the same
> performance.
> When i will have time, I will test on Xen 3.4.1
>
> On Mon, Nov 02, 2009 at 09:32:59AM +0100, Rémi BERNIER wrote:
> > Yes my windows guest is fully CPU but i thought to have better
> > performance regarding the number of transactions per seconds compared
> a
> > Physical server.
> > Thanks,
> >
>
> Have you tried pinning the guest vcpus to separate physical cores? And
> dedicating a separate core for dom0?
>
> Also, did you try with Xen 3.4.1 ?
>
> -- Pasi
>
> > Rémi
> >
> > On Mon, Nov 02, 2009 at 08:55:40AM +0100, Rémi BERNIER wrote:
> > > James, Pasi,
> > >
> > > Yes it's just a swinbench on the performance of transactions on
> a
> > Oracle
> > > database.
> > > But not a network test.
> > >
> > > My CPU is Intel(R) Xeon(R) CPU 5130 @ 2.00GHz, when i test with
> > > swingbench, my domU is full cpu (near 197%)
> > > The result of iowait with command: iostat 1 -> %iowait = 0.00
> > >
> > > Thanks in advance.
> > >
> >
> > Ok so it's fully CPU bound.
> >
> > Then you should measure CPU usage in the Windows guest and figure out
> > where all the CPU time goes..
> >
> > -- Pasi
> >
> > > Rémi
> > >
> > > While running the test, run "xm top" in dom0.
> > >
> > > How's the cpu usage? are your cpu cores maxed out?
> > > What's using cpu?
> > >
> > > Also run "iostat 1" in dom0 (it's in sysstat package), and see
> if you
> > > have a lot of iowait in dom0..
> > >
> > > -- Pasi
> > >
> > > >
> > > > I just finished the swingbench test with new drivers
> (0.10.0.130)
> > but
> > > it's the
> > > > same result about 8400 transactions per seconds..
> > > > So if you have an idea, i'm listening to you.
> > > >
> > > > Thanks in advance and good week.
> > > >
> > >
> > > Is the swingbench test disk i/o bound? Or network too?
> > >
> > > James
> > >
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> >
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