From: Avi Kivity <avi@qumranet.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: kvm-devel <kvm-devel@lists.sourceforge.net>,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: kvm & dyntick
Date: Thu, 11 Jan 2007 18:08:38 +0200 [thread overview]
Message-ID: <45A66106.5030608@qumranet.com> (raw)
It occurs to me that kvm could benefit greatly from dyntick:
dyntick-enabled host:
- generate virtual interrupts at whatever HZ the guest programs its
timers, be it 100, 250, 1000 or whatever
- avoid expensive vmexits due to useless timer interrupts
dyntick-enabled guest:
- reduce the load on the host when the guest is idling
(currently an idle guest consumes a few percent cpu)
What are the current plans wrt dyntick? Is it planned for 2.6.21?
--
error compiling committee.c: too many arguments to function
WARNING: multiple messages have this Message-ID (diff)
From: Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
To: Ingo Molnar <mingo-X9Un+BFzKDI@public.gmane.org>
Cc: kvm-devel
<kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org>,
linux-kernel
<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: kvm & dyntick
Date: Thu, 11 Jan 2007 18:08:38 +0200 [thread overview]
Message-ID: <45A66106.5030608@qumranet.com> (raw)
It occurs to me that kvm could benefit greatly from dyntick:
dyntick-enabled host:
- generate virtual interrupts at whatever HZ the guest programs its
timers, be it 100, 250, 1000 or whatever
- avoid expensive vmexits due to useless timer interrupts
dyntick-enabled guest:
- reduce the load on the host when the guest is idling
(currently an idle guest consumes a few percent cpu)
What are the current plans wrt dyntick? Is it planned for 2.6.21?
--
error compiling committee.c: too many arguments to function
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next reply other threads:[~2007-01-11 16:08 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-11 16:08 Avi Kivity [this message]
2007-01-11 16:08 ` kvm & dyntick Avi Kivity
2007-01-12 5:34 ` Rik van Riel
2007-01-12 5:34 ` Rik van Riel
2007-01-12 6:20 ` Ingo Molnar
2007-01-12 6:20 ` Ingo Molnar
2007-01-12 10:19 ` Ingo Molnar
2007-01-12 10:19 ` Ingo Molnar
2007-01-12 17:04 ` Avi Kivity
2007-01-12 17:04 ` Avi Kivity
2007-01-14 8:39 ` Ingo Molnar
2007-01-12 23:25 ` [kvm-devel] " Dor Laor
2007-01-12 23:39 ` Thomas Gleixner
2007-01-14 8:51 ` Ingo Molnar
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