From: Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
To: Paul Brook <paul-qD8j1LwMmJjtCj0u4l0SBw@public.gmane.org>
Cc: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org,
Jamie Lokier <jamie-yetKDKU6eevNLxjTenLetw@public.gmane.org>,
qemu-devel-qX2TKyscuCcdnm+yROfE0A@public.gmane.org
Subject: Re: [Qemu-devel] Re: [PATCH 0/4] Rework alarm timer infrastrucure - take2
Date: Mon, 20 Aug 2007 12:25:49 +0300 [thread overview]
Message-ID: <46C95E1D.1090409@qumranet.com> (raw)
In-Reply-To: <46C84E95.7070802-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
Avi Kivity wrote:
> Paul Brook wrote:
>>> Yes, good thinking, but this should only be done if it actually impacts
>>> something. Reducing overhead from 0.1% to 0.05% is not worthwhile
>>> if it
>>> introduces extra complexity.
>>>
>>
>>
>> If the overhead is that small, why are we touching this code in the
>> first place?
>>
>
> Accuracy is much more important from my point of view. Also, the
> reduction in the number of signals delivered when the guest uses 100Hz
> is significant.
>
You'd also get better battery life on laptops.
--
error compiling committee.c: too many arguments to function
-------------------------------------------------------------------------
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WARNING: multiple messages have this Message-ID (diff)
From: Avi Kivity <avi@qumranet.com>
To: Paul Brook <paul@codesourcery.com>
Cc: kvm-devel@lists.sourceforge.net, qemu-devel@nongnu.org
Subject: Re: [kvm-devel] [Qemu-devel] Re: [PATCH 0/4] Rework alarm timer infrastrucure - take2
Date: Mon, 20 Aug 2007 12:25:49 +0300 [thread overview]
Message-ID: <46C95E1D.1090409@qumranet.com> (raw)
In-Reply-To: <46C84E95.7070802@qumranet.com>
Avi Kivity wrote:
> Paul Brook wrote:
>>> Yes, good thinking, but this should only be done if it actually impacts
>>> something. Reducing overhead from 0.1% to 0.05% is not worthwhile
>>> if it
>>> introduces extra complexity.
>>>
>>
>>
>> If the overhead is that small, why are we touching this code in the
>> first place?
>>
>
> Accuracy is much more important from my point of view. Also, the
> reduction in the number of signals delivered when the guest uses 100Hz
> is significant.
>
You'd also get better battery life on laptops.
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2007-08-20 9:25 UTC|newest]
Thread overview: 104+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-08-17 23:11 [PATCH 0/4] Rework alarm timer infrastrucure - take 2 Luca Tettamanti
2007-08-17 23:11 ` [Qemu-devel] " Luca Tettamanti
2007-08-17 23:11 ` [PATCH 1/4] Rework alarm timer infrastrucure Luca Tettamanti
2007-08-17 23:11 ` [Qemu-devel] " Luca Tettamanti
2007-08-17 23:11 ` [PATCH 2/4] Add -clock option Luca Tettamanti
2007-08-17 23:11 ` [Qemu-devel] " Luca Tettamanti
2007-08-17 23:11 ` [PATCH 3/4] Add support for HPET periodic timer Luca Tettamanti
2007-08-17 23:11 ` [Qemu-devel] " Luca Tettamanti
[not found] ` <20070817231406.493008599-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2007-08-21 19:24 ` Matthew Kent
2007-08-21 19:24 ` Matthew Kent
2007-08-21 19:40 ` Luca
2007-08-21 19:40 ` Luca
[not found] ` <68676e00708211240k7237bf21k131257dd28063d26-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2007-08-21 20:15 ` Matthew Kent
2007-08-21 20:15 ` Matthew Kent
2007-08-22 6:48 ` Dan Kenigsberg
2007-08-22 6:48 ` [kvm-devel] " Dan Kenigsberg
[not found] ` <20070822064851.GA16295-RO/WWmT55CHJJbofclyLPCHBx9XpghdU@public.gmane.org>
2007-08-22 7:03 ` Avi Kivity
2007-08-22 7:03 ` [kvm-devel] " Avi Kivity
[not found] ` <46CBDFC4.5060207-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-08-22 12:34 ` Andi Kleen
2007-08-22 12:34 ` [kvm-devel] " Andi Kleen
[not found] ` <20070822123424.GK2642-KvMlXPVkKihbpigZmTR7Iw@public.gmane.org>
2007-08-22 21:11 ` Dan Kenigsberg
2007-08-22 21:11 ` [kvm-devel] " Dan Kenigsberg
[not found] ` <20070822211150.GA22093-RO/WWmT55CHJJbofclyLPCHBx9XpghdU@public.gmane.org>
2007-08-22 22:09 ` Andi Kleen
2007-08-22 22:09 ` [kvm-devel] " Andi Kleen
[not found] ` <20070822220947.GK8058-KvMlXPVkKihbpigZmTR7Iw@public.gmane.org>
2007-08-23 7:02 ` Dan Kenigsberg
2007-08-23 7:02 ` [kvm-devel] " Dan Kenigsberg
[not found] ` <20070823070230.GA24942-RO/WWmT55CHJJbofclyLPCHBx9XpghdU@public.gmane.org>
2007-08-24 20:18 ` Luca
2007-08-24 20:18 ` [kvm-devel] " Luca
2007-08-25 8:24 ` Dan Kenigsberg
2007-09-03 8:40 ` GUERRAZ Francois
2007-08-17 23:11 ` [PATCH 4/4] Add support for dynamic ticks Luca Tettamanti
2007-08-17 23:11 ` [Qemu-devel] " Luca Tettamanti
[not found] ` <20070817231149.544849769-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2007-08-17 23:48 ` [Qemu-devel] [PATCH 0/4] Rework alarm timer infrastrucure - take 2 Christian MICHON
2007-08-17 23:48 ` Christian MICHON
[not found] ` <46d6db660708171648m3a798685q6514261bc097bc62-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2007-08-18 0:10 ` Luca
2007-08-18 0:10 ` [kvm-devel] " Luca
2007-08-18 15:17 ` Anthony Liguori
2007-08-18 15:17 ` [Qemu-devel] Re: [kvm-devel] " Anthony Liguori
2007-08-18 16:53 ` [PATCH 0/4] Rework alarm timer infrastrucure - take2 Dor Laor
2007-08-18 16:53 ` [Qemu-devel] RE: [kvm-devel] " Dor Laor
[not found] ` <64F9B87B6B770947A9F8391472E032160D4645F0-yEcIvxbTEBqsx+V+t5oei8rau4O3wl8o3fe8/T/H7NteoWH0uzbU5w@public.gmane.org>
2007-08-18 22:02 ` Luca Tettamanti
2007-08-18 22:02 ` [Qemu-devel] Re: [kvm-devel] " Luca Tettamanti
[not found] ` <20070818220252.GA19526-sTXFmx6KbOnUXq0IF5SVAZ4oGUkBHcCu@public.gmane.org>
2007-08-18 23:58 ` Anthony Liguori
2007-08-18 23:58 ` [Qemu-devel] Re: [kvm-devel] " Anthony Liguori
2007-08-19 7:36 ` [PATCH 0/4] Rework alarm timer infrastrucure -take2 Dor Laor
2007-08-19 7:36 ` [Qemu-devel] RE: [kvm-devel] " Dor Laor
2007-08-19 8:24 ` [PATCH 0/4] Rework alarm timer infrastrucure - take2 Avi Kivity
2007-08-19 8:24 ` [Qemu-devel] Re: [kvm-devel] " Avi Kivity
[not found] ` <46C7FE32.4050309-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-08-19 13:10 ` [Qemu-devel] " Jamie Lokier
2007-08-19 13:10 ` [Qemu-devel] Re: [kvm-devel] " Jamie Lokier
[not found] ` <20070819131042.GA22798-tp2ajI7sM85Y6zH9YvfY1x2eb7JE58TQ@public.gmane.org>
2007-08-19 13:48 ` [Qemu-devel] " Avi Kivity
2007-08-19 13:48 ` [kvm-devel] " Avi Kivity
[not found] ` <46C84A16.7040305-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-08-19 13:57 ` Paul Brook
2007-08-19 13:57 ` [kvm-devel] " Paul Brook
[not found] ` <200708191457.21237.paul-qD8j1LwMmJjtCj0u4l0SBw@public.gmane.org>
2007-08-19 14:07 ` Avi Kivity
2007-08-19 14:07 ` [kvm-devel] " Avi Kivity
[not found] ` <46C84E95.7070802-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-08-19 14:27 ` Dor Laor
2007-08-19 14:27 ` [kvm-devel] " Dor Laor
2007-08-20 9:25 ` Avi Kivity [this message]
2007-08-20 9:25 ` Avi Kivity
2007-08-19 17:15 ` Jamie Lokier
2007-08-19 17:15 ` [kvm-devel] " Jamie Lokier
[not found] ` <20070819171545.GB16928-tp2ajI7sM85Y6zH9YvfY1x2eb7JE58TQ@public.gmane.org>
2007-08-19 19:29 ` [Qemu-devel] Re: [PATCH 0/4] Rework alarmtimer " Dor Laor
2007-08-19 19:29 ` [kvm-devel] " Dor Laor
2007-08-19 19:30 ` [Qemu-devel] Re: [PATCH 0/4] Rework alarm timer " Avi Kivity
2007-08-19 19:30 ` [kvm-devel] " Avi Kivity
2007-08-19 16:52 ` Luca
2007-08-19 16:52 ` [Qemu-devel] Re: [kvm-devel] " Luca
[not found] ` <68676e00708190952g7d4751c2g87a6ff71dd278f71-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2007-08-19 19:31 ` Avi Kivity
2007-08-19 19:31 ` [Qemu-devel] Re: [kvm-devel] " Avi Kivity
[not found] ` <46C89A8E.7040609-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-08-20 21:20 ` Luca Tettamanti
2007-08-20 21:20 ` [Qemu-devel] Re: [kvm-devel] " Luca Tettamanti
[not found] ` <20070820212058.GA6713-sTXFmx6KbOnUXq0IF5SVAZ4oGUkBHcCu@public.gmane.org>
2007-08-20 21:55 ` [Qemu-devel] " malc
2007-08-20 21:55 ` [Qemu-devel] Re: [kvm-devel] " malc
[not found] ` <Pine.LNX.4.64.0708210140540.16421-KsBd/I2zj1m2ZGm1qqSgDg@public.gmane.org>
2007-08-20 22:49 ` [Qemu-devel] " Luca
2007-08-20 22:49 ` [kvm-devel] " Luca
2007-08-21 12:09 ` Avi Kivity
2007-08-21 12:09 ` [Qemu-devel] Re: [kvm-devel] " Avi Kivity
[not found] ` <46CAD607.2080504-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-08-21 19:38 ` Luca Tettamanti
2007-08-21 19:38 ` [Qemu-devel] Re: [kvm-devel] " Luca Tettamanti
[not found] ` <20070821193834.GB13544-sTXFmx6KbOnUXq0IF5SVAZ4oGUkBHcCu@public.gmane.org>
2007-08-21 19:44 ` malc
2007-08-21 19:44 ` [Qemu-devel] Re: [kvm-devel] " malc
2007-08-22 5:02 ` Avi Kivity
2007-08-22 5:02 ` [Qemu-devel] Re: [kvm-devel] " Avi Kivity
[not found] ` <46CBC34F.6060601-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-08-22 16:12 ` Luca Tettamanti
2007-08-22 16:12 ` [Qemu-devel] Re: [kvm-devel] " Luca Tettamanti
[not found] ` <20070822161211.GA30147-sTXFmx6KbOnUXq0IF5SVAZ4oGUkBHcCu@public.gmane.org>
2007-08-22 16:21 ` Avi Kivity
2007-08-22 16:21 ` [Qemu-devel] Re: [kvm-devel] " Avi Kivity
[not found] ` <46CC6285.3090904-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-08-22 16:38 ` Luca
2007-08-22 16:38 ` [Qemu-devel] Re: [kvm-devel] " Luca
[not found] ` <68676e00708220938y57c07edas705fc8360aefcb78-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2007-08-22 16:45 ` Avi Kivity
2007-08-22 16:45 ` [Qemu-devel] Re: [kvm-devel] " Avi Kivity
[not found] ` <46CC680C.1030307-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-08-22 17:23 ` Luca
2007-08-22 17:23 ` [Qemu-devel] Re: [kvm-devel] " Luca
[not found] ` <68676e00708221023m352c2de3y3b19188dbb9ef49e-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2007-08-22 17:39 ` Luca
2007-08-22 17:39 ` [Qemu-devel] Re: [kvm-devel] " Luca
2007-08-22 19:21 ` Luca
2007-08-22 19:21 ` [Qemu-devel] Re: [kvm-devel] " Luca
[not found] ` <68676e00708221221n6f8fcd67m9d15f7fea663ec71-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2007-08-22 21:35 ` Dor Laor
2007-08-22 21:35 ` [Qemu-devel] RE: [kvm-devel] " Dor Laor
[not found] ` <64F9B87B6B770947A9F8391472E032160D5042F3-yEcIvxbTEBqsx+V+t5oei8rau4O3wl8o3fe8/T/H7NteoWH0uzbU5w@public.gmane.org>
2007-08-22 22:07 ` Luca
2007-08-22 22:07 ` [Qemu-devel] Re: [kvm-devel] " Luca
2007-08-22 20:42 ` Dan Kenigsberg
2007-08-22 20:42 ` [Qemu-devel] Re: [kvm-devel] " Dan Kenigsberg
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