From: Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
To: Gerd Hoffmann <kraxel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Cc: kvm-devel
<kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org>,
Jeremy Fitzhardinge <jeremy-TSDbQ3PG+2Y@public.gmane.org>,
Hollis Blanchard
<hollisb-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
Subject: Re: [RFC] Paravirt timer for KVM
Date: Tue, 16 Oct 2007 12:27:37 +0200 [thread overview]
Message-ID: <47149219.4090508@qumranet.com> (raw)
In-Reply-To: <4714731D.4040408-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Gerd Hoffmann wrote:
> Hollis Blanchard wrote:
>
>> That's a good point, but does PIT/HPET emulation show up as a hot spot
>> in any profiles? I think keeping the hypercall API as small as feasible
>> is a desirable design goal.
>>
>
> pit probably doesn't due to being rarely updated. For hpet I'd expect
> it showing up much more. Asking for current time is a quite frequent
> operation in the linux kernel. I've had X86_CR4_TSD set for a while and
> saw *lots* of rdtsc traps then ...
>
>
Good point.
--
error compiling committee.c: too many arguments to function
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next prev parent reply other threads:[~2007-10-16 10:27 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-12 16:08 [RFC] Paravirt timer for KVM Glauber de Oliveira Costa
[not found] ` <5d6222a80710120908s6b1f5845head84e7b7a463cd1-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2007-10-12 18:10 ` Anthony Liguori
[not found] ` <470FB8AB.9030101-rdkfGonbjUSkNkDKm+mE6A@public.gmane.org>
2007-10-15 16:58 ` Glauber de Oliveira Costa
[not found] ` <5d6222a80710150958y31338c2ag3a391390b13788da-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2007-10-15 17:07 ` Avi Kivity
[not found] ` <47139E6F.7030704-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-10-15 18:09 ` Glauber de Oliveira Costa
[not found] ` <5d6222a80710151109m5376449foc6be5b687c469a2b-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2007-10-16 7:31 ` Avi Kivity
2007-10-12 18:39 ` Jeremy Fitzhardinge
[not found] ` <470FBF58.2080701-TSDbQ3PG+2Y@public.gmane.org>
2007-10-12 18:58 ` Anthony Liguori
2007-10-15 17:15 ` Glauber de Oliveira Costa
2007-10-12 19:48 ` Hollis Blanchard
2007-10-12 20:02 ` Anthony Liguori
[not found] ` <470FD2CA.1000702-rdkfGonbjUSkNkDKm+mE6A@public.gmane.org>
2007-10-12 21:55 ` Hollis Blanchard
2007-10-12 22:07 ` Anthony Liguori
[not found] ` <470FF036.6080803-rdkfGonbjUSkNkDKm+mE6A@public.gmane.org>
2007-10-15 4:04 ` Dong, Eddie
[not found] ` <10EA09EFD8728347A513008B6B0DA77A023A6DCE-wq7ZOvIWXbNpB2pF5aRoyrfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2007-10-15 16:01 ` Hollis Blanchard
2007-10-15 16:47 ` Avi Kivity
[not found] ` <47139994.4030606-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-10-15 23:05 ` Hollis Blanchard
2007-10-16 8:15 ` Gerd Hoffmann
[not found] ` <4714731D.4040408-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2007-10-16 10:27 ` Avi Kivity [this message]
2007-10-16 9:45 ` Avi Kivity
[not found] ` <4714882C.2050504-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-10-16 10:03 ` Dong, Eddie
2007-10-15 17:52 ` Glauber de Oliveira Costa
[not found] ` <5d6222a80710151052j37f0561dn6dbb5b07f6f697d1-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2007-10-16 7:17 ` Avi Kivity
2007-10-15 17:38 ` Glauber de Oliveira Costa
2007-10-15 8:41 ` Gerd Hoffmann
[not found] ` <471327C7.8060304-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2007-10-15 9:07 ` Avi Kivity
[not found] ` <47132DCF.3060906-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-10-15 9:56 ` Gerd Hoffmann
[not found] ` <47133957.20508-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2007-10-15 10:14 ` Gildas
2007-10-15 11:02 ` Carsten Otte
[not found] ` <471348B1.30300-tA70FqPdS9bQT0dZR+AlfA@public.gmane.org>
2007-10-15 16:31 ` Jeremy Fitzhardinge
2007-10-15 18:03 ` Glauber de Oliveira Costa
2007-10-15 18:00 ` Glauber de Oliveira Costa
[not found] ` <5d6222a80710151100p63e8e9aata79b006b43f6c37e-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2007-10-16 7:20 ` Avi Kivity
2007-10-16 7:40 ` Gerd Hoffmann
2007-10-15 17:53 ` Glauber de Oliveira Costa
[not found] ` <5d6222a80710151029y288fc65bs3d325d5c8d1f039c@mail.gmail.com>
[not found] ` <1192489814.22523.36.camel@basalt>
2007-10-16 1:26 ` Glauber de Oliveira Costa
2007-10-12 22:09 ` Hollis Blanchard
2007-10-15 17:48 ` Glauber de Oliveira Costa
[not found] ` <5d6222a80710151048t22e747l42106a6507c811c6-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2007-10-15 22:54 ` Hollis Blanchard
2007-10-16 1:15 ` Glauber de Oliveira Costa
[not found] ` <5d6222a80710151815m2330c8b7ocf4fc352954a551c-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2007-10-16 9:47 ` Avi Kivity
2007-10-16 7:14 ` Avi Kivity
2007-10-16 8:41 ` Dong, Eddie
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