Re: [Xen-devel] [PATCH v13 10/11] pvqspinlock, x86: Enable PV qspinlock for KVM

2014-12-02 Thread Thomas Gleixner
On Wed, 29 Oct 2014, Waiman Long wrote: > AIM7 XFS Disk Test (no overcommit) > kernel JPMReal Time Sys TimeUsr Time > - ---- > PV ticketlock 25423737.08 98.95 5.44 > PV

Re: [Xen-devel] [PATCH v13 10/11] pvqspinlock, x86: Enable PV qspinlock for KVM

2014-12-02 Thread Konrad Rzeszutek Wilk
On Wed, Oct 29, 2014 at 04:19:10PM -0400, Waiman Long wrote: > This patch adds the necessary KVM specific code to allow KVM to > support the CPU halting and kicking operations needed by the queue > spinlock PV code. > > Two KVM guests of 20 CPU cores (2 nodes) were created for performance > testin