Re: [PATCH v3 0/3] KVM: Yield to IPI target if necessary

2019-06-28 Thread Wanpeng Li
On Fri, 28 Jun 2019 at 17:12, Wanpeng Li wrote: > > On Wed, 12 Jun 2019 at 09:37, Nadav Amit wrote: > > > > > On Jun 11, 2019, at 6:18 PM, Wanpeng Li wrote: > > > > > > On Wed, 12 Jun 2019 at 00:57, Nadav Amit wrote: > > >>> On Jun 11, 2019, at 3:02 AM, Wanpeng Li wrote: > > >>> > > >>> On

Re: [PATCH v3 0/3] KVM: Yield to IPI target if necessary

2019-06-28 Thread Wanpeng Li
On Wed, 12 Jun 2019 at 09:37, Nadav Amit wrote: > > > On Jun 11, 2019, at 6:18 PM, Wanpeng Li wrote: > > > > On Wed, 12 Jun 2019 at 00:57, Nadav Amit wrote: > >>> On Jun 11, 2019, at 3:02 AM, Wanpeng Li wrote: > >>> > >>> On Tue, 11 Jun 2019 at 09:48, Nadav Amit wrote: > > On Jun 10,

Re: [PATCH v3 0/3] KVM: Yield to IPI target if necessary

2019-06-11 Thread Nadav Amit
> On Jun 11, 2019, at 6:18 PM, Wanpeng Li wrote: > > On Wed, 12 Jun 2019 at 00:57, Nadav Amit wrote: >>> On Jun 11, 2019, at 3:02 AM, Wanpeng Li wrote: >>> >>> On Tue, 11 Jun 2019 at 09:48, Nadav Amit wrote: > On Jun 10, 2019, at 6:45 PM, Wanpeng Li wrote: > > On Tue, 11 Jun

Re: [PATCH v3 0/3] KVM: Yield to IPI target if necessary

2019-06-11 Thread Wanpeng Li
On Wed, 12 Jun 2019 at 00:57, Nadav Amit wrote: > > > On Jun 11, 2019, at 3:02 AM, Wanpeng Li wrote: > > > > On Tue, 11 Jun 2019 at 09:48, Nadav Amit wrote: > >>> On Jun 10, 2019, at 6:45 PM, Wanpeng Li wrote: > >>> > >>> On Tue, 11 Jun 2019 at 09:11, Sean Christopherson > >>> wrote: >

Re: [PATCH v3 0/3] KVM: Yield to IPI target if necessary

2019-06-11 Thread Nadav Amit
> On Jun 11, 2019, at 3:02 AM, Wanpeng Li wrote: > > On Tue, 11 Jun 2019 at 09:48, Nadav Amit wrote: >>> On Jun 10, 2019, at 6:45 PM, Wanpeng Li wrote: >>> >>> On Tue, 11 Jun 2019 at 09:11, Sean Christopherson >>> wrote: On Mon, Jun 10, 2019 at 04:34:20PM +0200, Radim Krčmář wrote:

Re: [PATCH v3 0/3] KVM: Yield to IPI target if necessary

2019-06-11 Thread Wanpeng Li
On Mon, 10 Jun 2019 at 22:34, Radim Krčmář wrote: > > 2019-05-30 09:05+0800, Wanpeng Li: > > The idea is from Xen, when sending a call-function IPI-many to vCPUs, > > yield if any of the IPI target vCPUs was preempted. 17% performance > > increasement of ebizzy benchmark can be observed in an

Re: [PATCH v3 0/3] KVM: Yield to IPI target if necessary

2019-06-11 Thread Wanpeng Li
On Tue, 11 Jun 2019 at 09:48, Nadav Amit wrote: > > > On Jun 10, 2019, at 6:45 PM, Wanpeng Li wrote: > > > > On Tue, 11 Jun 2019 at 09:11, Sean Christopherson > > wrote: > >> On Mon, Jun 10, 2019 at 04:34:20PM +0200, Radim Krčmář wrote: > >>> 2019-05-30 09:05+0800, Wanpeng Li: > The idea

Re: [PATCH v3 0/3] KVM: Yield to IPI target if necessary

2019-06-10 Thread Nadav Amit
> On Jun 10, 2019, at 6:45 PM, Wanpeng Li wrote: > > On Tue, 11 Jun 2019 at 09:11, Sean Christopherson > wrote: >> On Mon, Jun 10, 2019 at 04:34:20PM +0200, Radim Krčmář wrote: >>> 2019-05-30 09:05+0800, Wanpeng Li: The idea is from Xen, when sending a call-function IPI-many to vCPUs,

Re: [PATCH v3 0/3] KVM: Yield to IPI target if necessary

2019-06-10 Thread Wanpeng Li
On Tue, 11 Jun 2019 at 09:11, Sean Christopherson wrote: > > On Mon, Jun 10, 2019 at 04:34:20PM +0200, Radim Krčmář wrote: > > 2019-05-30 09:05+0800, Wanpeng Li: > > > The idea is from Xen, when sending a call-function IPI-many to vCPUs, > > > yield if any of the IPI target vCPUs was preempted.

Re: [PATCH v3 0/3] KVM: Yield to IPI target if necessary

2019-06-10 Thread Sean Christopherson
On Mon, Jun 10, 2019 at 04:34:20PM +0200, Radim Krčmář wrote: > 2019-05-30 09:05+0800, Wanpeng Li: > > The idea is from Xen, when sending a call-function IPI-many to vCPUs, > > yield if any of the IPI target vCPUs was preempted. 17% performance > > increasement of ebizzy benchmark can be

Re: [PATCH v3 0/3] KVM: Yield to IPI target if necessary

2019-06-10 Thread Radim Krčmář
2019-05-30 09:05+0800, Wanpeng Li: > The idea is from Xen, when sending a call-function IPI-many to vCPUs, > yield if any of the IPI target vCPUs was preempted. 17% performance > increasement of ebizzy benchmark can be observed in an over-subscribe > environment. (w/ kvm-pv-tlb disabled,

Re: [PATCH v3 0/3] KVM: Yield to IPI target if necessary

2019-06-09 Thread Wanpeng Li
ping, :) On Thu, 30 May 2019 at 09:05, Wanpeng Li wrote: > > The idea is from Xen, when sending a call-function IPI-many to vCPUs, > yield if any of the IPI target vCPUs was preempted. 17% performance > increasement of ebizzy benchmark can be observed in an over-subscribe > environment. (w/

[PATCH v3 0/3] KVM: Yield to IPI target if necessary

2019-05-29 Thread Wanpeng Li
The idea is from Xen, when sending a call-function IPI-many to vCPUs, yield if any of the IPI target vCPUs was preempted. 17% performance increasement of ebizzy benchmark can be observed in an over-subscribe environment. (w/ kvm-pv-tlb disabled, testing TLB flush call-function IPI-many since