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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1320853793.31056.75.camel@lappy \
--to=levinsasha928@gmail.com \
--cc=asias.hejun@gmail.com \
--cc=gorcunov@gmail.com \
--cc=kvm@vger.kernel.org \
--cc=mingo@elte.hu \
--cc=penberg@cs.helsinki.fi \
--cc=richard@nod.at \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox