)
; Huangweidong (C) ;
Junaid Shahid
Subject: Re: RFC: Split EPT huge pages in advance of dirty logging
> -Original Message-
> From: Peter Feiner [mailto:pfei...@google.com]
[...]
>Hi Jay,
>I've been sick since I sent my last email, so I haven't gotten to this patch
>
Xu ;
> > k...@vger.kernel.org; qemu-devel@nongnu.org; pbonz...@redhat.com;
> > dgilb...@redhat.com; quint...@redhat.com; Liujinsong (Paul)
> > ; linfeng (M) ; wangxin
> (U)
> > ; Huangweidong (C)
> >
> > Subject: Re: RFC: Split EPT huge pages in advanc
ilb...@redhat.com; quint...@redhat.com; Liujinsong (Paul)
> ; linfeng (M) ; wangxin (U)
> ; Huangweidong (C)
>
> Subject: Re: RFC: Split EPT huge pages in advance of dirty logging
>
> On Fri, Feb 21, 2020 at 2:08 PM Junaid Shahid wrote:
> >
> > On 2/20/20 9:34 AM, Ben Gard
ilb...@redhat.com; quint...@redhat.com; Liujinsong (Paul)
> ; linfeng (M) ; wangxin (U)
> ; Huangweidong (C)
>
> Subject: Re: RFC: Split EPT huge pages in advance of dirty logging
>
> On Fri, Feb 21, 2020 at 2:08 PM Junaid Shahid wrote:
> >
> > On 2/20/20 9:34 AM, Ben Gard
On Fri, Feb 21, 2020 at 2:08 PM Junaid Shahid wrote:
>
> On 2/20/20 9:34 AM, Ben Gardon wrote:
> >
> > FWIW, we currently do this eager splitting at Google for live
> > migration. When the log-dirty-memory flag is set on a memslot we
> > eagerly split all pages in the slot down to 4k granularity.
On 2/20/20 9:34 AM, Ben Gardon wrote:
FWIW, we currently do this eager splitting at Google for live
migration. When the log-dirty-memory flag is set on a memslot we
eagerly split all pages in the slot down to 4k granularity.
As Jay said, this does not cause crippling lock contention because the
hat.com;
> Liujinsong (Paul) ; linfeng (M)
> ; wangxin (U) ;
> Huangweidong (C)
> Subject: Re: RFC: Split EPT huge pages in advance of dirty logging
>
> On Thu, Feb 20, 2020 at 09:34:52AM -0800, Ben Gardon wrote:
> > On Thu, Feb 20, 2020 at 5:53 AM Zhoujian (jay)
>
gnu.org; pbonz...@redhat.com;
> > dgilb...@redhat.com; quint...@redhat.com; Liujinsong (Paul)
> > ; linfeng (M) ; wangxin (U)
> > ; Huangweidong (C)
> >
> > Subject: Re: RFC: Split EPT huge pages in advance of dirty logging
> >
> > On Wed, Feb 19, 2020 at 01
gt; > From: Peter Xu [mailto:pet...@redhat.com]
> > > > Sent: Wednesday, February 19, 2020 1:43 AM
> > > > To: Zhoujian (jay)
> > > > Cc: k...@vger.kernel.org; qemu-devel@nongnu.org;
> > pbonz...@redhat.com;
> > > > dgilb...@redhat.com; quint...@redhat.com
2020 1:19 AM
> > > To: Zhoujian (jay)
> > > Cc: k...@vger.kernel.org; qemu-devel@nongnu.org; pbonz...@redhat.com;
> > > dgilb...@redhat.com; quint...@redhat.com; Liujinsong (Paul)
> > > ; linfeng (M) ; wangxin (U)
> > > ; Huangweidong (C)
> >
ul)
> ; linfeng (M) ; wangxin (U)
> ; Huangweidong (C)
>
> Subject: Re: RFC: Split EPT huge pages in advance of dirty logging
>
> On Wed, Feb 19, 2020 at 01:19:08PM +, Zhoujian (jay) wrote:
> > Hi Peter,
> >
> > > -Original Message-
> > > From: P
el.org; qemu-devel@nongnu.org; pbonz...@redhat.com;
> > dgilb...@redhat.com; quint...@redhat.com; Liujinsong (Paul)
> > ; linfeng (M) ; wangxin (U)
> > ; Huangweidong (C)
> >
> > Subject: Re: RFC: Split EPT huge pages in advance of dirty logging
> >
> > On Tue, Feb 18
(Paul)
> ; linfeng (M) ; wangxin (U)
> ; Huangweidong (C)
>
> Subject: Re: RFC: Split EPT huge pages in advance of dirty logging
>
> On Tue, Feb 18, 2020 at 01:13:47PM +, Zhoujian (jay) wrote:
> > Hi all,
> >
> > We found that the guest will be soft-lockup
On Tue, Feb 18, 2020 at 01:13:47PM +, Zhoujian (jay) wrote:
> Hi all,
>
> We found that the guest will be soft-lockup occasionally when live migrating
> a 60 vCPU,
> 512GiB huge page and memory sensitive VM. The reason is clear, almost all of
> the vCPUs
> are waiting for the KVM MMU spin-lo
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