From: Joerg Roedel <joro@8bytes.org>
To: Avi Kivity <avi@redhat.com>
Cc: "Zhai, Edwin" <edwin.zhai@intel.com>, Ingo Molnar <mingo@elte.hu>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>
Subject: Re: [PATCH] [RESEND] KVM:VMX: Add support for Pause-Loop Exiting
Date: Fri, 25 Sep 2009 22:43:39 +0200 [thread overview]
Message-ID: <20090925204339.GA29634@8bytes.org> (raw)
In-Reply-To: <4ABA2C22.7020000@redhat.com>
On Wed, Sep 23, 2009 at 05:09:38PM +0300, Avi Kivity wrote:
>
> We haven't sorted out what is the correct thing to do here. I think we
> should go for a directed yield, but until we have it, you can use
> hrtimers to sleep for 100 microseconds and hope the holding vcpu will
> get scheduled. Even if it doesn't, we're only wasting a few percent cpu
> time instead of spinning.
How do you plan to find out to which vcpu thread the current thread
should yield?
Joerg
next prev parent reply other threads:[~2009-09-25 20:43 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-23 14:04 [PATCH] [RESEND] KVM:VMX: Add support for Pause-Loop Exiting Zhai, Edwin
2009-09-23 14:09 ` Avi Kivity
2009-09-25 1:11 ` Zhai, Edwin
2009-09-27 8:28 ` Avi Kivity
2009-09-28 9:33 ` Zhai, Edwin
2009-09-29 12:05 ` Zhai, Edwin
2009-09-29 13:34 ` Avi Kivity
2009-09-30 1:01 ` Zhai, Edwin
2009-09-30 6:28 ` Avi Kivity
2009-09-30 16:22 ` Marcelo Tosatti
2009-10-02 18:28 ` Marcelo Tosatti
2009-10-09 10:03 ` Zhai, Edwin
2009-10-11 15:34 ` Avi Kivity
2009-10-12 19:13 ` Marcelo Tosatti
2009-09-25 20:43 ` Joerg Roedel [this message]
2009-09-27 8:31 ` Avi Kivity
2009-09-27 13:46 ` Joerg Roedel
2009-09-27 13:47 ` Avi Kivity
2009-09-27 14:07 ` Joerg Roedel
2009-09-27 14:18 ` Avi Kivity
2009-09-27 14:53 ` Joerg Roedel
2009-09-29 16:46 ` Avi Kivity
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