From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andi Kleen <andi@firstfloor.org>
Subject: Re: gettimeofday "slow" in RHEL4 guests
Date: Tue, 25 Nov 2008 11:14:53 +0100
Message-ID: <87d4gkcdsy.fsf@basil.nowhere.org>
References: <492AE8AC.2090502@cisco.com> <492B8204.5@cisco.com>
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Cc: kvm-devel <kvm@vger.kernel.org>,
	Marcelo Tosatti <mtosatti@redhat.com>,
	Glauber de Oliveira Costa <gcosta@redhat.com>,
	Avi Kivity <avi@redhat.com>
To: "David S. Ahern" <daahern@cisco.com>
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In-Reply-To: <492B8204.5@cisco.com> (David S. Ahern's message of "Mon, 24 Nov 2008 21:41:40 -0700")
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"David S. Ahern" <daahern@cisco.com> writes:
>
> Any chance the pit or pmtmr options can be optimized a bit?

They both will require vmexits and never be really fast. Same 
for HPET. If you want fast gtod you really need to make TSC work.

-Andi

-- 
ak@linux.intel.com