RE: [Xen-devel] Question about machine time delay in guest domains(Full virtualization)

["You, Yongkang" <yongkang.you@xxxxxxxxx>]

On Tuesday, January 08, 2008 10:03 PM christie kumiko goto wrote:

> ------------------------------------------------------
> <<Environment>>
> -Host machine has 2 cores (core number 0-1)
> -Guest OSs: Full virtualization
> 
> *test 1
> 4 domains share 2 core (each domain has 2 vcpu)
> ->result: actual test time : test time measured in guest domains = 4:1
> 
> *test 2
> 2 domains share 1 core and the other 2 domains share the other 1 core.
> ->result: actual test time : test time measured in guest domains = 2:1
> ------------------------------------------------------

Hi Christi,

Did you try if only creating 1 domains with 2 cpus?
What's your platform and guest OS version? There are some new configurations 
for guest timer, such as timer_mode=1/2/3 (default timer mode is 0). You can 
set it in the guest config file. For some new OS, we can use timer_mode=1/2 to 
make the timer more acccurate. But I am not sure if they can work in your 
testing. 

Best Regards,
Yongkang You

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