Re: [Qemu-devel] question about VM kernel parameter idle=

2013-11-20 Thread Gleb Natapov
On Thu, Nov 21, 2013 at 09:01:39AM +0200, Michael S. Tsirkin wrote: > On Thu, Nov 21, 2013 at 03:45:28AM +, Zhanghaoyu (A) wrote: > > Hi, all > > > > What's the difference of the linux guest kernel parameter > > idle=, especially in performance? > > > > Taking the performance into account, w

Re: [Qemu-devel] question about VM kernel parameter idle=

2013-11-20 Thread Michael S. Tsirkin
On Thu, Nov 21, 2013 at 03:45:28AM +, Zhanghaoyu (A) wrote: > Hi, all > > What's the difference of the linux guest kernel parameter > idle=, especially in performance? > > Taking the performance into account, which one is best? > > In my opinion, if the number of all VMs' vcpus is far more

[Qemu-devel] question about VM kernel parameter idle=

2013-11-20 Thread Zhanghaoyu (A)
Hi, all What's the difference of the linux guest kernel parameter idle=, especially in performance? Taking the performance into account, which one is best? In my opinion, if the number of all VMs' vcpus is far more than that of pcpus, e.g. SPECVirt test, idle=halt is better for server's total