Re: [ANNOUNCE] kvm-49 release

Haydn Solomon
2007-11-02T01:54:40Z

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On Nov 1, 2007 9:36 PM, Sheng Yang <sheng.yang-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org> wrote:

> On Friday 02 November 2007 09:10:31 Haydn Solomon wrote:
> > How can I tell that my cpu has flexpriority?
> >
> > (Resending this as didn't cc list last time.)
>
> Oops, forgot the patch...

Thanks Sheng.

Luckily for me I've got the Flexpriority feature

[root@localhost winxptest]# dmesg | grep lex
kvm: FlexPriority enabled!

One thing I do notice apart from noticeably very good responsiveness and
performance on windows guest ( xp sp2 ) is that this is the lowest cpu usage
I've seen on the qemu kvm process to date. I haven't tried smp yet but that
will be my next test and will report on how that goes. Thanks guys and well
done!

>
> >
> > On Nov 1, 2007 7:12 PM, Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org> wrote:
> > > Today's big change is FlexPriority, which drastically improves Windows
> > > SMP and/or ACPI performance on newer Intel processors.
> > >
> > > Changes from kvm-49:
> > > - fix smp_call_function_mask() emulation on preemptible kernels
> > > - move libkvm into own directory (Hollis Blanchard)
> > > - fix save/restore/migrate for new memory slot management (Uri Lublin)
> > > - compile fixes (Uri Lublin, me)
> > > - fix recursive locking on mmap() (Anthony Liguori)
> > > - remove some cr2 dependencies from x86 emulator
> > > - further simplify x86 emulator
> > > - more portability work (Carsten Otte, Hollis Blanchard)
> > > - Intel FlexPriority support (Sheng Yang)
> > > - fix dirty page tracking on aliased pages (Uri Lublin)
> > >
> > > Notes:
> > > If you use the modules bundled with kvm-50, you can use any
> version
> > > of Linux from 2.6.9 upwards.
> > > If you use the modules bundled with Linux 2.6.20, you need to use
> > > kvm-12.
> > > If you use the modules bundled with Linux 2.6.21, you need to use
> > > kvm-17.
> > > Modules from Linux 2.6.22 and up will work with any kvm version
> from
> > > kvm-22. Some features may only be available in newer releases.
> > > For best performance, use Linux 2.6.23-rc2 or later as the host.
> > >
> > > http://kvm.qumranet.com
> > >
> > >
> > >
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> > > _______________________________________________
> > > kvm-devel mailing list
> > > kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
> > > https://lists.sourceforge.net/lists/listinfo/kvm-devel
>
>
>
> --
> Thanks
> Yang, Sheng
>

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