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



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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