Re: [Xen-devel] CAP and performance problem

[Juergen Gross <juergen.gross@xxxxxxxxxxxxxx>]

On 06.06.2013 16:12, Dario Faggioli wrote:
> On gio, 2013-06-06 at 15:55 +0200, Massimo Canonico wrote:
> > On 06/06/2013 03:02 PM, Juergen Gross wrote:
> > > Could you try:
> > >
> > > xl vcpu-list; sleep 10; xl vcpu-list
> > >
> > > when the test is running and post the output?
> > >
> > >
> > > Juergen
> > here we go:
> >
> > [root@csitest ~]# xl vcpu-list; sleep 10; xl vcpu-list
> > Name                                ID  VCPU   CPU State   Time(s) CPU
> > Affinity
> > Domain-0                             0     0    0   ---      23.0  0
> > Domain-0                             0     1    0   ---      10.5  0
> > Domain-0                             0     2    0   ---       8.5  0
> > Domain-0                             0     3    0   r--       6.8  0
> > rubis-web                            1     0    2   r--    2968.5  2
> > Name                                ID  VCPU   CPU State   Time(s) CPU
> > Affinity
> > Domain-0                             0     0    0   ---      23.0  0
> > Domain-0                             0     1    0   r--      10.6  0
> > Domain-0                             0     2    0   ---       8.5  0
> > Domain-0                             0     3    0   ---       6.8  0
> > rubis-web                            1     0    2   r--    2973.5  2
> So, rubis-web's vcpu ran for 5 secs, which sounds right. I see why
> Jurgen asked you to do that, but not how he plans to squeeze anything
> more than that from these numbers... Waiting for him to enlighten us
> again! ;-P
Just for the records: I only wanted to be sure the problem isn't in the xen
scheduler. And this seems to be proved by the numbers.


Juergen

--
Juergen Gross                 Principal Developer Operating Systems
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