Hi, I am researching on optimization of virtual machines running high-performance computing applications. I looked up on Xen Credit-Based CPU Scheduler twiki page but could not find the mathematical formula for calculating the priorities: http://wiki.xensource.com/xenwiki/CreditScheduler I guess there would be one, probably not published on the web, so it would be great if some knows about it. Thanks, Omer ------------------------------------------------------- CERN -- European Organization for Nuclear Research, IT Department, CH-1211, Geneva 23, Switzerland _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Hi, I am researching on optimization of virtual machines running high-performance computing applications. I looked up on Xen Credit-Based CPU Scheduler twiki page but could not find the mathematical formula for calculating the priorities: http://wiki.xensource.com/xenwiki/CreditScheduler I guess there would be one, probably not published on the web, so it would be great if some knows about it. Thanks, Omer ------------------------------------------------------- CERN -- European Organization for Nuclear Research, IT Department, CH-1211, Geneva 23, Switzerland _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Hi, I am researching on optimization of virtual machines running high-performance computing applications. I looked up on Xen Credit-Based CPU Scheduler twiki page but could not find the mathematical formula for calculating the priorities: http://wiki.xensource.com/xenwiki/CreditScheduler I guess there would be one, probably not published on the web, so it would be great if some knows about it. Thanks, Omer ------------------------------------------------------- CERN -- European Organization for Nuclear Research, IT Department, CH-1211, Geneva 23, Switzerland _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Hi Omer, Maybe no mathematical formula for credit scheduler... There are three kinds of priorities: BOOST, UNDER, OVER. Usually, guest vcpu is in UNDER if its credit is not used out, or in OVER. In http://markmail.org/message/oiqibkmkak75zv5z, you''ll find the details about how to calculate the credit. And http://www.xen.org/files/xensummit_tokyo/15_NaokiNishiguchi-en.pdf, gives you the insight how credit scheduler works. Omer Khalid wrote:> Hi, > > I am researching on optimization of virtual machines running > high-performance computing applications. I looked up on Xen > Credit-Based CPU Scheduler twiki page but could not find the > mathematical formula for calculating the priorities: > > http://wiki.xensource.com/xenwiki/CreditScheduler > > I guess there would be one, probably not published on the web, so it > would be great if some knows about it. > Thanks, > Omer > > ------------------------------------------------------- > CERN -- European Organization for Nuclear > Research, IT Department, CH-1211, > Geneva 23, Switzerland > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-usersBest Regards, Disheng, Su _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users