falcon_jerboa
2009-May-26 21:08 UTC
[Xen-users] How to dynamically change the Cap value for credit scheduler
Hi, I have the following problem to solve. Let''s say guest domain 1(guest1) is allocated with 30% of the physical CPU by running the command " xm sched-credit -d guest1 -c 30). Then at some point of the application processing hosted in guest1, I need to increase its CPU share from 30% to 60%. How can I do this? First, guest1 should notify Xen hypervisor that it needs a CPU share change. Then Xen hypervisor makes the change automatically(not running the command manually). I am new to Xen. Any help would be greatly appreciated! -- View this message in context: http://www.nabble.com/How-to-dynamically-change-the-Cap-value-for-credit-scheduler-tp23731407p23731407.html Sent from the Xen - User mailing list archive at Nabble.com. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Fajar A. Nugraha
2009-May-28 05:16 UTC
Re: [Xen-users] How to dynamically change the Cap value for credit scheduler
On Wed, May 27, 2009 at 4:08 AM, falcon_jerboa <qzhu@hotmail.com> wrote:> > Hi, I have the following problem to solve. Let''s say guest domain 1(guest1) > is allocated with 30% of the physical CPU by running the command " xm > sched-credit -d guest1 -c 30). Then at some point of the application > processing hosted in guest1, I need to increase its CPU share from 30% to > 60%. How can I do this? First, guest1 should notify Xen hypervisor that it > needs a CPU share change. Then Xen hypervisor makes the change > automatically(not running the command manually).No automated way of doing this. Why do you set the cap if you want it to increase automatically anyway? That would make the cap meaningless. If you set the cap to 100, it would use the amount of CPU up to the equivalent of 1 CPU core. This is the maximum value, so if it only needs 30% then it only uses 30%, and no more. -- Fajar _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users