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Re: [Xen-users] [XCP] weight/cap VCPU-params ignores during migration

21/05/2010 at 11:43 -0400, Vern Burke wrote:

That's interesting, because I test it twice, on different installation
of XCP.

Can you describe the test to reproduce (and compare)?

host XCP version, settings on VM before VM start, VM OS, type of load,
statistic before migration and after?

(and, if we talking about strange... How long migration takes).

Thanks.

---
wBR, George.

> That's weird, I just did the same thing with a CentOS 5.5 VM on my cloud 
> and didn't see this.
> 
> Vern
> 
> 
> On 5/21/2010 11:04 AM, George Shuklin wrote:
> > It simple. I create an VM with autostarting 'load generator' (simple 
> > endless loop with little math on C).
> >
> > I set VCPU-params:cap=10, and after start this VM really take about 10% of 
> > CPU (I check it from xentop and xenmon.py).
> >
> > I do live migration of this VM to other host and xentop on new host show 
> > about 100% of CPU usage by same VM.
> >
> > Ignoring VCPU param changing on running VM may be feature. But ignoring it 
> > after migrating is defenitivly a bug.
> >
> > ---
> > wBR, George.
> >
> > 21.05.10, 15:43, "Vern Burke"<vburke@xxxxxxxx>:
> >
> >    
> >> You can't change either memory or vCPUs on a running VM. The bug isn't 
> >> that it won't change, the bug is that it will allow you to try.
> >>
> >>   How do you know XCP won't honor the max vCPUs setting? All of the VMs in 
> >> my pool show the correct max and none are exceeding that after being 
> >> migrated substantially by my load balancer.
> >>
> >>   Vern
> >>   Sent from my BlackBerry® wireless device from U.S. Cellular
> >>
> >>   -----Original Message-----
> >>   From: George Shuklin
> >>   Date: Fri, 21 May 2010 15:17:42
> >>   To:
> >>   Subject: [Xen-users] [XCP] weight/cap VCPU-params ignores during 
> >> migration
> >>
> >>   Good day.
> >>
> >>   I found that XCP ignores VCPU-params (weight and cap) after VM live 
> >> migration, as well, as those parameters ignored if changed on running VM.
> >>
> >>   May I as someone with xcp cloud nearly check this bug? Thank you.
> >>
> >>
> >>      
> >    
> 
> 
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