Re: [Libvir] [PATCH][RFC] shows scheduler information

[Atsushi SAKAI <sakaia jp fujitsu com>]

Hi, Rich

Thank you for your comments.
(The primary motivation is take a comments!)
 
I am wondering the libvirt policy about scheduer.
And I just know the Xen scheduler only.
Is any good idea to support this?

Thanks
Atsushi SAKAI



"Richard W.M. Jones" <rjones redhat com> wrote:

> Atsushi SAKAI wrote:
> > Hi,
> > 
> > This patch intends add a showing function of scheduler information.
> > If apply this patch to current revision 1.490 
> > and type virsh dominfo 0 
> > then shows following scheduler information.
> > Currently I assume credit scheduler only.
> > getting function is implemented but setting function is not yet.
> > I just waiting for comments.
> 
> Is this part of the patch correct?
> 
> diff -urpN libvirt.0329/src/driver.h libvirt.sched2/src/driver.h
> --- libvirt.0329/src/driver.h	2007-03-16 02:24:57.000000000 +0900
> +++ libvirt.sched2/src/driver.h	2007-03-29 19:48:04.000000000 +0900
> @@ -146,6 +146,12 @@ typedef int
>   typedef int
>   	(*virDrvDomainSetAutostart)	(virDomainPtr domain,
>   					 int autostart);
> +typedef int
> +	(*virDrvDomainGetSchedInfo)	(virDomainPtr domain,
> +					 int *autostart);
> +typedef int
> +	(*virDrvDomainSetSchedInfo)	(virDomainPtr domain,
> +					 int autostart);
> 
>   typedef struct _virDriver virDriver;
>   typedef virDriver *virDriverPtr;
> 
> My more general comment would be how Xen-specific is this?  What 
> scheduler could be used by other drivers?  (Obviously qemu just uses the 
> Linux scheduler.  However I don't know what kvm uses - whether it also 
> schedules using the Linux scheduler, or some other method).
> 
> Rich.
> 
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