From: Sasha Levin <levinsasha928@gmail.com>
To: Richard Weinberger <richard@nod.at>
Cc: penberg@cs.helsinki.fi, kvm@vger.kernel.org, mingo@elte.hu,
asias.hejun@gmail.com, gorcunov@gmail.com
Subject: Re: kvm tools: clock sources for hrtimer
Date: Wed, 09 Nov 2011 17:49:53 +0200 [thread overview]
Message-ID: <1320853793.31056.75.camel@lappy> (raw)
In-Reply-To: <294867a39da5124eee9a2c167f0f9c87@radon2.swed.at>
On Wed, 2011-11-09 at 17:42 +0200, Richard Weinberger wrote:
> On Wed, 09 Nov 2011 16:49:51 +0200, Sasha Levin
> <levinsasha928@gmail.com> wrote:
> > We'll do kvm_clock as well if you compile it in the kernel.
>
> CONFIG_HIGH_RES_TIMERS is on both host and guest kernels enabled.
> BTW: Why adds the kvm tool "notsc" to the guest's kernel command line?
You'll need CONFIG_KVM_CLOCK.
I'm not actually sure how close our implementation is to having tsc
working so far, Cyrill knows more about that than me.
> > I don't think that using a non-pv clocksource in a guest will do you
> > much good either.
>
> Using qemu-kvm I get pretty good results...
>
> Thanks,
> //richard
--
Sasha.
next prev parent reply other threads:[~2011-11-09 15:51 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-09 14:27 kvm tools: clock sources for hrtimer Richard Weinberger
2011-11-09 14:49 ` Sasha Levin
2011-11-09 15:42 ` Richard Weinberger
2011-11-09 15:49 ` Sasha Levin [this message]
2011-11-09 16:00 ` Cyrill Gorcunov
2011-11-09 16:14 ` Cyrill Gorcunov
2011-11-09 18:56 ` Richard Weinberger
2011-11-09 19:13 ` Pekka Enberg
2011-11-09 19:25 ` Cyrill Gorcunov
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