From: Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
To: "Nakajima, Jun" <jun.nakajima-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Cc: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
Subject: Re: QEMU PIC indirection patch for in-kernel APIC work
Date: Wed, 04 Apr 2007 19:32:14 +0300 [thread overview]
Message-ID: <4613D30E.7030905@qumranet.com> (raw)
In-Reply-To: <8FFF7E42E93CC646B632AB40643802A8025B962E-1a9uaKK1+wJcIJlls4ac1rfspsVTdybXVpNB7YpNyf8@public.gmane.org>
Nakajima, Jun wrote:
> Most of H/W-virtualization capable processors out there don't support
> that feature today. I think the decision (kvm or qemu) should be done
> based on performance data. I'm not worried about maintenance issues; the
> APIC code is not expected to change frequently. I'm a bit worried about
> extra complexity caused by such split, though.
>
>
In principle we could measure the performance cost today with the pv-net
driver; however it still does a lot of copies which could be eliminated.
> BTW, I see CPU utilization of qemu is almost always 99% in the top
> command when I run kernel build in an x86-64 Linux guest.
>
Isn't that expected? if your guest image is mostly cached in the host,
the guest would have nothing to block on.
--
error compiling committee.c: too many arguments to function
-------------------------------------------------------------------------
Take Surveys. Earn Cash. Influence the Future of IT
Join SourceForge.net's Techsay panel and you'll get the chance to share your
opinions on IT & business topics through brief surveys-and earn cash
http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
next prev parent reply other threads:[~2007-04-04 16:32 UTC|newest]
Thread overview: 81+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-02 11:46 QEMU PIC indirection patch for in-kernel APIC work Gregory Haskins
[not found] ` <4610A6A9.BA47.005A.0-Et1tbQHTxzrQT0dZR+AlfA@public.gmane.org>
2007-04-04 6:53 ` Avi Kivity
[not found] ` <46134B74.1080004-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-04 14:20 ` Anthony Liguori
[not found] ` <4613B438.60107-rdkfGonbjUSkNkDKm+mE6A@public.gmane.org>
2007-04-04 14:39 ` Avi Kivity
[not found] ` <4613B89F.8090806-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-04 14:55 ` Anthony Liguori
[not found] ` <4613BC6B.1070708-rdkfGonbjUSkNkDKm+mE6A@public.gmane.org>
2007-04-04 15:06 ` Avi Kivity
[not found] ` <4613BF07.50606-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-04 15:36 ` Nakajima, Jun
[not found] ` <8FFF7E42E93CC646B632AB40643802A8025B9580-1a9uaKK1+wJcIJlls4ac1rfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2007-04-04 15:47 ` Dor Laor
[not found] ` <64F9B87B6B770947A9F8391472E032160B318E96-yEcIvxbTEBqsx+V+t5oei8rau4O3wl8o3fe8/T/H7NteoWH0uzbU5w@public.gmane.org>
2007-04-04 15:53 ` Anthony Liguori
[not found] ` <4613C9EE.5030600-rdkfGonbjUSkNkDKm+mE6A@public.gmane.org>
2007-04-04 16:05 ` Avi Kivity
[not found] ` <4613CCD1.2070702-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-04 16:20 ` Nakajima, Jun
[not found] ` <8FFF7E42E93CC646B632AB40643802A8025B962E-1a9uaKK1+wJcIJlls4ac1rfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2007-04-04 16:27 ` Dor Laor
[not found] ` <64F9B87B6B770947A9F8391472E032160B318EDB-yEcIvxbTEBqsx+V+t5oei8rau4O3wl8o3fe8/T/H7NteoWH0uzbU5w@public.gmane.org>
2007-04-04 16:43 ` Anthony Liguori
[not found] ` <4613D596.7080201-rdkfGonbjUSkNkDKm+mE6A@public.gmane.org>
2007-04-04 16:54 ` Avi Kivity
2007-04-04 16:32 ` Avi Kivity [this message]
[not found] ` <4613D30E.7030905-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-04 16:48 ` Nakajima, Jun
[not found] ` <8FFF7E42E93CC646B632AB40643802A8025B96AA-1a9uaKK1+wJcIJlls4ac1rfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2007-04-04 16:58 ` Avi Kivity
[not found] ` <4613D93A.5020902-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-04 17:09 ` Nakajima, Jun
[not found] ` <8FFF7E42E93CC646B632AB40643802A8025B970D-1a9uaKK1+wJcIJlls4ac1rfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2007-04-04 21:33 ` Dor Laor
2007-04-04 18:12 ` Anthony Liguori
2007-04-04 15:51 ` Anthony Liguori
[not found] ` <4613C993.9020405-rdkfGonbjUSkNkDKm+mE6A@public.gmane.org>
2007-04-04 16:02 ` Avi Kivity
[not found] ` <4613CC01.1090500-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-04 16:09 ` Anthony Liguori
[not found] ` <4613CDB2.4000903-rdkfGonbjUSkNkDKm+mE6A@public.gmane.org>
2007-04-04 16:19 ` Avi Kivity
[not found] ` <4613D001.3040606-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-04 20:01 ` Ingo Molnar
[not found] ` <20070404200112.GA6070-X9Un+BFzKDI@public.gmane.org>
2007-04-04 20:24 ` Anthony Liguori
[not found] ` <4614098F.2030307-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2007-04-04 21:21 ` Ingo Molnar
2007-04-04 23:19 ` [kvm-devel] " Rusty Russell
2007-04-05 7:17 ` Avi Kivity
2007-04-06 1:02 ` Rusty Russell
2007-04-08 5:36 ` Avi Kivity
[not found] ` <46187F4E.1080807-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-08 9:04 ` Muli Ben-Yehuda
2007-04-09 2:50 ` Rusty Russell
[not found] ` <1176087018.11664.65.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2007-04-09 7:10 ` Avi Kivity
[not found] ` <4619E6DC.3010804-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-09 9:46 ` Rusty Russell
[not found] ` <1176111984.11664.90.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2007-04-09 13:38 ` Avi Kivity
[not found] ` <461A41CA.9080201-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-10 8:07 ` Evgeniy Polyakov
2007-04-10 8:19 ` [kvm-devel] " Avi Kivity
[not found] ` <461B48A8.1060904-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-10 8:58 ` Evgeniy Polyakov
2007-04-10 11:21 ` [kvm-devel] " Avi Kivity
[not found] ` <461B7334.8090807-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-10 11:50 ` Evgeniy Polyakov
2007-04-10 12:17 ` [kvm-devel] " Avi Kivity
[not found] ` <461B8069.6070007-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-10 12:30 ` Evgeniy Polyakov
[not found] ` <20070410123034.GA11493-9fLWQ3dKdXwox3rIn2DAYQ@public.gmane.org>
2007-04-10 12:49 ` Avi Kivity
2007-04-11 3:53 ` [kvm-devel] " Rusty Russell
[not found] ` <1176263593.26372.84.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2007-04-11 4:26 ` Avi Kivity
[not found] ` <461C6360.1060908-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-11 13:23 ` Rusty Russell
[not found] ` <1176297794.14322.72.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2007-04-11 14:28 ` Avi Kivity
[not found] ` <461CF098.3090003-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-11 23:30 ` Rusty Russell
[not found] ` <1176334200.14322.133.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2007-04-12 3:32 ` Avi Kivity
2007-04-16 0:22 ` [kvm-devel] " Rusty Russell
2007-04-16 5:13 ` Avi Kivity
[not found] ` <1175728768.12230.593.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2007-04-05 9:30 ` Ingo Molnar
[not found] ` <20070405093033.GC25448-X9Un+BFzKDI@public.gmane.org>
2007-04-05 9:58 ` Avi Kivity
2007-04-05 10:26 ` [kvm-devel] " Ingo Molnar
2007-04-05 11:26 ` Avi Kivity
[not found] ` <4614DCE1.70905-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-05 11:36 ` Ingo Molnar
2007-04-06 1:16 ` [kvm-devel] " Rusty Russell
2007-04-06 18:59 ` Ingo Molnar
2007-04-05 10:55 ` Ingo Molnar
2007-04-05 14:32 ` [kvm-devel] " Anthony Liguori
2007-04-06 10:37 ` Ingo Molnar
2007-04-06 11:07 ` Ingo Molnar
2007-04-04 22:07 ` Dor Laor
2007-04-05 6:54 ` Avi Kivity
2007-04-05 6:40 ` Avi Kivity
2007-04-04 16:23 ` Dor Laor
[not found] ` <64F9B87B6B770947A9F8391472E032160B318ED4-yEcIvxbTEBqsx+V+t5oei8rau4O3wl8o3fe8/T/H7NteoWH0uzbU5w@public.gmane.org>
2007-04-04 16:48 ` Anthony Liguori
[not found] ` <4613D6CD.6060209-rdkfGonbjUSkNkDKm+mE6A@public.gmane.org>
2007-04-04 20:07 ` Ingo Molnar
2007-04-05 13:50 ` Dong, Eddie
[not found] ` <0E6FE5D295DE5B4B8D9070C26A227987E0D1EC-wq7ZOvIWXbNpB2pF5aRoyrfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2007-04-05 13:59 ` Avi Kivity
[not found] ` <461500B5.4080102-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-05 14:52 ` Dong, Eddie
[not found] ` <0E6FE5D295DE5B4B8D9070C26A227987F2444B-wq7ZOvIWXbNpB2pF5aRoyrfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2007-04-05 15:01 ` Avi Kivity
[not found] ` <46150F4F.4030505-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-05 15:16 ` Dong, Eddie
[not found] ` <0E6FE5D295DE5B4B8D9070C26A227987F24452-wq7ZOvIWXbNpB2pF5aRoyrfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2007-04-05 15:26 ` Anthony Liguori
2007-04-05 15:22 ` Anthony Liguori
2007-04-05 14:41 ` Dor Laor
[not found] ` <64F9B87B6B770947A9F8391472E032160B319509-yEcIvxbTEBqsx+V+t5oei8rau4O3wl8o3fe8/T/H7NteoWH0uzbU5w@public.gmane.org>
2007-04-05 14:48 ` Dong, Eddie
2007-04-05 14:57 ` Dong, Eddie
2007-04-04 17:51 ` Gregory Haskins
[not found] ` <46139F39.BA47.005A.0-Et1tbQHTxzrQT0dZR+AlfA@public.gmane.org>
2007-04-04 18:19 ` Anthony Liguori
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4613D30E.7030905@qumranet.com \
--to=avi-atkuwr5tajbwk0htik3j/w@public.gmane.org \
--cc=jun.nakajima-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org \
--cc=kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.