Re: [Xen-devel] [PATCH] sched_rt: Improved nested virtualization performance

2015-11-19 Thread Meng Xu
Hi Dario, 2015-11-19 4:51 GMT-05:00 Dario Faggioli : > Hi, > > Thanks Tianyang for the report and for the patch, and Meng for helping > getting the patch itself on the list and to me, and for commenting. > > On Wed, 2015-11-18 at 22:38 -0500, Meng Xu wrote: >> [cc. Dario...] >> >> 2015-11-18 22:24

Re: [Xen-devel] [PATCH] sched_rt: Improved nested virtualization performance

2015-11-19 Thread Dario Faggioli
Hi, Thanks Tianyang for the report and for the patch, and Meng for helping getting the patch itself on the list and to me, and for commenting. On Wed, 2015-11-18 at 22:38 -0500, Meng Xu wrote: > [cc. Dario...] > > 2015-11-18 22:24 GMT-05:00 Tianyang Chen : > > In nested virtualization, choosing

Re: [Xen-devel] [PATCH] sched_rt: Improved nested virtualization performance

2015-11-18 Thread Meng Xu
2015-11-18 22:50 GMT-05:00 Tianyang Chen : > In nested virtualization, choosing the smaller value for the > time slice between the MAX_SCHEDULE and the budget will cause > high host CPU usage. Just add one comment: I also experienced this issue when I develop Xen in a virtual box on MacBook Air.

[Xen-devel] [PATCH] sched_rt: Improved nested virtualization performance

2015-11-18 Thread Tianyang Chen
In nested virtualization, choosing the smaller value for the time slice between the MAX_SCHEDULE and the budget will cause high host CPU usage. Signed-off-by: Tianyang Chen --- xen/common/sched_rt.c |2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/xen/common/sched_rt.c b/xe