WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-devel

Re: [Xen-devel] Xen 4 TSC problems

>>> On 24.02.11 at 12:57, Olivier Hanesse <olivier.hanesse@xxxxxxxxx> wrote:
> I tried to turn off cstates with max_cstate=0 without success (still "not
> reliable").
> 
> With cpuidle=0, I also got :
> 
> (XEN) TSC has constant rate, deep Cstates possible, so not reliable,
> warp=3022 (count=1)

This message by itself isn't telling much I believe.

> xm info | grep command
> xen_commandline        : dom0_mem=512M cpuidle=0 loglvl=all guest_loglvl=all
> dom0_max_vcpus=1 dom0_vcpus_pin console=vga,com1 com1=19200,8n1
> 
> Keir :
> 
> Using clocksource=pit :
> 
> (XEN) Platform timer is 1.193MHz PIT
> 
> I also got :
> 
> (XEN) TSC has constant rate, deep Cstates possible, so not reliable,
> warp=3262 (count=2)

The question is whether any of this eliminates the time jumps seen
by your DomU-s (from your past mails I wasn't actually sure whether
Dom0 also experienced this problem, albeit it would be odd if it didn't).

Jan

Jan


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