From: oerg Roedel <joro@8bytes.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: Avi Kivity <avi@redhat.com>,
"Zhang, Yanmin" <yanmin_zhang@linux.intel.com>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Sheng Yang <sheng@linux.intel.com>,
linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
Marcelo Tosatti <mtosatti@redhat.com>,
Jes Sorensen <Jes.Sorensen@redhat.com>,
Gleb Natapov <gleb@redhat.com>,
Zachary Amsden <zamsden@redhat.com>,
ziteng.huang@intel.com
Subject: Re: [PATCH] Enhance perf to collect KVM guest os statistics from host side
Date: Tue, 16 Mar 2010 23:30:40 +0100 [thread overview]
Message-ID: <20100316223040.GH13108@8bytes.org> (raw)
In-Reply-To: <20100316112500.GA5337@elte.hu>
On Tue, Mar 16, 2010 at 12:25:00PM +0100, Ingo Molnar wrote:
> Hm, that sounds rather messy if we want to use it to basically expose kernel
> functionality in a guest/host unified way. Is the qemu process discoverable in
> some secure way? Can we trust it? Is there some proper tooling available to do
> it, or do we have to push it through 2-3 packages to get such a useful feature
> done?
Since we want to implement a pmu usable for the guest anyway why we
don't just use a guests perf to get all information we want? If we get a
pmu-nmi from the guest we just re-inject it to the guest and perf in the
guest gives us all information we wand including kernel and userspace
symbols, stack traces, and so on.
In the previous thread we discussed about a direct trace channel between
guest and host kernel (which can be used for ftrace events for example).
This channel could be used to transport this information to the host
kernel.
The only additional feature needed is a way for the host to start a perf
instance in the guest.
Opinions?
Joerg
next prev parent reply other threads:[~2010-03-16 22:30 UTC|newest]
Thread overview: 376+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-16 5:27 [PATCH] Enhance perf to collect KVM guest os statistics from host side Zhang, Yanmin
2010-03-16 5:41 ` Avi Kivity
2010-03-16 7:24 ` Ingo Molnar
2010-03-16 9:20 ` Avi Kivity
2010-03-16 9:53 ` Ingo Molnar
2010-03-16 10:13 ` Avi Kivity
2010-03-16 10:20 ` Ingo Molnar
2010-03-16 10:40 ` Avi Kivity
2010-03-16 10:50 ` Ingo Molnar
2010-03-16 11:10 ` Avi Kivity
2010-03-16 11:25 ` Ingo Molnar
2010-03-16 12:21 ` Avi Kivity
2010-03-16 12:29 ` Ingo Molnar
2010-03-16 12:41 ` Avi Kivity
2010-03-16 13:08 ` Ingo Molnar
2010-03-16 13:16 ` Avi Kivity
2010-03-16 13:31 ` Ingo Molnar
2010-03-16 13:37 ` Avi Kivity
2010-03-16 15:06 ` Frank Ch. Eigler
2010-03-16 15:52 ` Ingo Molnar
2010-03-16 16:08 ` Frank Ch. Eigler
2010-03-16 16:35 ` Ingo Molnar
2010-03-16 17:34 ` Anthony Liguori
2010-03-16 17:52 ` Ingo Molnar
2010-03-16 18:06 ` Anthony Liguori
2010-03-16 18:28 ` Ingo Molnar
2010-03-16 23:04 ` Anthony Liguori
2010-03-17 0:41 ` Frank Ch. Eigler
2010-03-17 3:54 ` Avi Kivity
2010-03-17 8:16 ` Ingo Molnar
2010-03-17 8:20 ` Avi Kivity
2010-03-17 8:59 ` Ingo Molnar
2010-03-18 5:27 ` Huang, Zhiteng
2010-03-17 8:14 ` Ingo Molnar
2010-03-17 8:53 ` Ingo Molnar
2010-03-16 17:06 ` Anthony Liguori
2010-03-16 17:39 ` Ingo Molnar
2010-03-16 23:07 ` Anthony Liguori
2010-03-17 8:10 ` [RFC] Unify KVM kernel-space and user-space code into a single project Ingo Molnar
2010-03-18 8:20 ` Avi Kivity
2010-03-18 8:56 ` Ingo Molnar
2010-03-18 9:24 ` Alexander Graf
2010-03-18 10:10 ` Ingo Molnar
2010-03-18 10:21 ` Avi Kivity
2010-03-18 11:35 ` Ingo Molnar
2010-03-18 12:00 ` Alexander Graf
2010-03-18 12:33 ` Frank Ch. Eigler
2010-03-18 13:01 ` John Kacur
2010-03-18 14:25 ` Ingo Molnar
2010-03-18 14:39 ` Frank Ch. Eigler
2010-03-18 13:02 ` Ingo Molnar
2010-03-18 13:10 ` Avi Kivity
2010-03-18 13:31 ` Ingo Molnar
2010-03-18 13:44 ` Daniel P. Berrange
2010-03-18 13:59 ` Ingo Molnar
2010-03-18 14:06 ` John Kacur
2010-03-18 14:11 ` Ingo Molnar
2010-03-18 13:46 ` Avi Kivity
2010-03-18 13:57 ` Ingo Molnar
2010-03-18 14:25 ` Avi Kivity
2010-03-18 14:36 ` Ingo Molnar
2010-03-18 14:51 ` Avi Kivity
2010-03-18 13:24 ` Frank Ch. Eigler
2010-03-18 13:48 ` Ingo Molnar
2010-03-18 10:12 ` Avi Kivity
2010-03-18 10:28 ` Ingo Molnar
2010-03-18 10:50 ` Ingo Molnar
2010-03-18 11:30 ` Avi Kivity
2010-03-18 11:48 ` Ingo Molnar
2010-03-18 12:22 ` Avi Kivity
2010-03-18 13:00 ` Ingo Molnar
2010-03-18 13:36 ` Avi Kivity
2010-03-18 14:09 ` Ingo Molnar
2010-03-18 14:38 ` Avi Kivity
2010-03-18 17:16 ` Ingo Molnar
2010-03-18 14:59 ` Anthony Liguori
2010-03-18 15:17 ` Ingo Molnar
2010-03-18 16:11 ` Anthony Liguori
2010-03-18 16:28 ` Ingo Molnar
2010-03-18 16:38 ` Anthony Liguori
2010-03-18 16:51 ` Pekka Enberg
2010-03-18 17:02 ` Ingo Molnar
2010-03-18 17:09 ` Avi Kivity
2010-03-18 17:28 ` Ingo Molnar
2010-03-19 7:56 ` Avi Kivity
2010-03-19 8:53 ` Ingo Molnar
2010-03-19 12:56 ` Anthony Liguori
2010-03-21 19:17 ` Ingo Molnar
2010-03-21 19:35 ` Antoine Martin
2010-03-21 19:59 ` Ingo Molnar
2010-03-21 20:09 ` Avi Kivity
2010-03-21 21:00 ` Ingo Molnar
2010-03-21 21:44 ` Avi Kivity
2010-03-21 23:43 ` Anthony Liguori
2010-03-21 20:01 ` Avi Kivity
2010-03-21 20:08 ` Olivier Galibert
2010-03-21 20:11 ` Avi Kivity
2010-03-21 20:18 ` Antoine Martin
2010-03-21 20:24 ` Avi Kivity
2010-03-21 20:31 ` Antoine Martin
2010-03-21 21:03 ` Avi Kivity
2010-03-21 21:20 ` Ingo Molnar
2010-03-22 6:35 ` Avi Kivity
2010-03-22 11:48 ` Ingo Molnar
2010-03-22 12:31 ` Pekka Enberg
2010-03-22 12:37 ` Daniel P. Berrange
2010-03-22 12:44 ` Pekka Enberg
2010-03-22 12:54 ` Ingo Molnar
2010-03-22 13:05 ` Daniel P. Berrange
2010-03-22 13:23 ` Richard W.M. Jones
2010-03-22 14:02 ` Ingo Molnar
2010-03-22 14:20 ` oerg Roedel
2010-03-22 13:56 ` Ingo Molnar
2010-03-22 14:01 ` Richard W.M. Jones
2010-03-22 14:07 ` Ingo Molnar
2010-03-22 12:36 ` Avi Kivity
2010-03-22 12:50 ` Pekka Enberg
2010-03-22 6:59 ` Zhang, Yanmin
2010-03-22 12:05 ` Antoine Martin
2010-03-21 20:37 ` Ingo Molnar
2010-03-22 6:37 ` Avi Kivity
2010-03-22 11:39 ` Ingo Molnar
2010-03-22 12:44 ` Avi Kivity
2010-03-22 12:54 ` Daniel P. Berrange
2010-03-22 14:26 ` Ingo Molnar
2010-03-22 17:29 ` Avi Kivity
2010-03-21 20:31 ` Ingo Molnar
2010-03-21 21:30 ` Avi Kivity
2010-03-21 21:52 ` Ingo Molnar
2010-03-22 6:49 ` Avi Kivity
2010-03-22 11:23 ` Ingo Molnar
2010-03-22 12:49 ` Avi Kivity
2010-03-22 13:01 ` Pekka Enberg
2010-03-22 14:54 ` Ingo Molnar
2010-03-22 19:04 ` Avi Kivity
2010-03-23 9:46 ` Olivier Galibert
2010-03-22 14:47 ` Ingo Molnar
2010-03-22 18:15 ` Avi Kivity
2010-03-22 11:10 ` oerg Roedel
2010-03-22 12:22 ` Ingo Molnar
2010-03-22 13:46 ` Joerg Roedel
2010-03-22 16:32 ` Ingo Molnar
2010-03-22 17:17 ` Frank Ch. Eigler
2010-03-22 17:27 ` Pekka Enberg
2010-03-22 17:32 ` Avi Kivity
2010-03-22 17:39 ` Ingo Molnar
2010-03-22 17:58 ` Avi Kivity
2010-03-22 17:52 ` Pekka Enberg
2010-03-22 18:04 ` Avi Kivity
2010-03-22 18:10 ` Pekka Enberg
2010-03-22 18:55 ` Avi Kivity
2010-03-22 17:43 ` Ingo Molnar
2010-03-22 18:02 ` Avi Kivity
2010-03-22 17:44 ` Avi Kivity
2010-03-22 19:10 ` Ingo Molnar
2010-03-22 19:18 ` Anthony Liguori
2010-03-22 19:23 ` Avi Kivity
2010-03-22 19:28 ` Andrea Arcangeli
2010-03-22 19:20 ` Joerg Roedel
2010-03-22 19:28 ` Avi Kivity
2010-03-22 19:49 ` Ingo Molnar
2010-03-21 23:35 ` Anthony Liguori
2010-03-20 7:35 ` Avi Kivity
2010-03-21 19:06 ` Ingo Molnar
2010-03-21 20:22 ` Avi Kivity
2010-03-21 20:55 ` Ingo Molnar
2010-03-21 21:42 ` Avi Kivity
2010-03-21 21:54 ` Ingo Molnar
2010-03-22 0:16 ` Anthony Liguori
2010-03-22 11:59 ` Ingo Molnar
2010-03-22 7:13 ` Avi Kivity
2010-03-22 11:14 ` Ingo Molnar
2010-03-22 11:23 ` Alexander Graf
2010-03-22 12:33 ` Lukas Kolbe
2010-03-22 12:29 ` Avi Kivity
2010-03-22 12:44 ` Ingo Molnar
2010-03-22 12:52 ` Avi Kivity
2010-03-22 14:32 ` Ingo Molnar
2010-03-22 14:43 ` Anthony Liguori
2010-03-22 15:55 ` Ingo Molnar
2010-03-22 16:08 ` Anthony Liguori
2010-03-22 16:59 ` Ingo Molnar
2010-03-22 18:28 ` Anthony Liguori
2010-03-22 17:11 ` Ingo Molnar
2010-03-22 18:30 ` Anthony Liguori
2010-03-22 16:12 ` Avi Kivity
2010-03-22 16:16 ` Avi Kivity
2010-03-22 16:40 ` Pekka Enberg
2010-03-22 18:06 ` Avi Kivity
2010-03-22 16:51 ` Ingo Molnar
2010-03-22 17:08 ` Avi Kivity
2010-03-22 17:34 ` Ingo Molnar
2010-03-22 17:55 ` Avi Kivity
2010-03-22 19:15 ` Anthony Liguori
2010-03-22 19:31 ` Daniel P. Berrange
2010-03-22 19:33 ` Anthony Liguori
2010-03-22 19:39 ` Alexander Graf
2010-03-22 19:54 ` Ingo Molnar
2010-03-22 19:58 ` Alexander Graf
2010-03-22 20:21 ` Ingo Molnar
2010-03-22 20:35 ` Avi Kivity
2010-03-23 10:48 ` Bernd Petrovitsch
2010-03-22 20:19 ` Antoine Martin
2010-03-22 20:00 ` Antoine Martin
2010-03-22 20:58 ` Daniel P. Berrange
2010-03-22 19:20 ` Ingo Molnar
2010-03-22 19:44 ` Avi Kivity
2010-03-22 20:06 ` Ingo Molnar
2010-03-22 20:15 ` Avi Kivity
2010-03-22 20:29 ` Ingo Molnar
2010-03-22 20:40 ` Avi Kivity
2010-03-22 18:35 ` Anthony Liguori
2010-03-22 19:22 ` Ingo Molnar
2010-03-22 19:29 ` Anthony Liguori
2010-03-22 20:32 ` Ingo Molnar
2010-03-22 20:43 ` Avi Kivity
2010-03-22 19:45 ` Avi Kivity
2010-03-22 20:35 ` Ingo Molnar
2010-03-22 20:45 ` Avi Kivity
2010-03-22 18:41 ` Anthony Liguori
2010-03-22 19:27 ` Ingo Molnar
2010-03-22 19:47 ` Avi Kivity
2010-03-22 20:46 ` Ingo Molnar
2010-03-22 20:53 ` Avi Kivity
2010-03-22 22:06 ` Anthony Liguori
2010-03-23 9:07 ` Avi Kivity
2010-03-23 14:09 ` Anthony Liguori
2010-03-23 10:13 ` Kevin Wolf
2010-03-23 10:28 ` Antoine Martin
2010-03-23 14:06 ` Joerg Roedel
2010-03-23 16:39 ` Avi Kivity
2010-03-23 18:21 ` Joerg Roedel
2010-03-23 18:27 ` Peter Zijlstra
2010-03-23 19:05 ` Javier Guerra Giraldez
2010-03-24 4:57 ` Avi Kivity
2010-03-24 11:59 ` Joerg Roedel
2010-03-24 12:08 ` Avi Kivity
2010-03-24 12:50 ` Joerg Roedel
2010-03-24 13:05 ` Avi Kivity
2010-03-24 13:46 ` Joerg Roedel
2010-03-24 13:57 ` Avi Kivity
2010-03-24 15:01 ` Joerg Roedel
2010-03-24 15:12 ` Avi Kivity
2010-03-24 15:46 ` Joerg Roedel
2010-03-24 15:49 ` Avi Kivity
2010-03-24 15:59 ` Joerg Roedel
2010-03-24 16:09 ` Avi Kivity
2010-03-24 16:40 ` Joerg Roedel
2010-03-24 16:47 ` Avi Kivity
2010-03-24 16:52 ` Avi Kivity
2010-04-08 14:29 ` Antoine Martin
2010-03-24 17:47 ` Arnaldo Carvalho de Melo
2010-03-24 18:20 ` Avi Kivity
2010-03-24 18:27 ` Arnaldo Carvalho de Melo
2010-03-25 9:00 ` Zhang, Yanmin
2010-03-24 15:26 ` Daniel P. Berrange
2010-03-24 15:37 ` Joerg Roedel
2010-03-24 15:43 ` Avi Kivity
2010-03-24 15:50 ` Joerg Roedel
2010-03-24 15:52 ` Avi Kivity
2010-03-24 16:17 ` Joerg Roedel
2010-03-24 16:20 ` Avi Kivity
2010-03-24 16:31 ` Joerg Roedel
2010-03-24 16:32 ` Avi Kivity
2010-03-24 16:45 ` Joerg Roedel
2010-03-24 16:48 ` Avi Kivity
2010-03-24 16:03 ` Peter Zijlstra
2010-03-24 16:16 ` Avi Kivity
2010-03-24 16:23 ` Joerg Roedel
2010-03-24 16:45 ` Peter Zijlstra
2010-03-24 13:53 ` Alexander Graf
2010-03-24 13:59 ` Avi Kivity
2010-03-24 14:24 ` Alexander Graf
2010-03-24 15:06 ` Avi Kivity
2010-03-24 5:09 ` Andi Kleen
2010-03-24 6:42 ` Avi Kivity
2010-03-24 7:38 ` Andi Kleen
2010-03-24 8:59 ` Avi Kivity
2010-03-24 9:31 ` Andi Kleen
2010-03-22 14:46 ` Avi Kivity
2010-03-22 16:08 ` Ingo Molnar
2010-03-22 16:13 ` Avi Kivity
2010-03-24 12:06 ` Paolo Bonzini
2010-03-21 22:00 ` Ingo Molnar
2010-03-21 23:50 ` Anthony Liguori
2010-03-22 0:25 ` Anthony Liguori
2010-03-22 7:18 ` Avi Kivity
2010-03-19 9:19 ` Paul Mundt
2010-03-19 9:52 ` Olivier Galibert
2010-03-19 13:56 ` [LKML] " Konrad Rzeszutek Wilk
2010-03-18 14:53 ` Anthony Liguori
2010-03-18 16:13 ` Ingo Molnar
2010-03-18 16:54 ` Avi Kivity
2010-03-18 17:11 ` Ingo Molnar
2010-03-18 18:20 ` Anthony Liguori
2010-03-18 18:23 ` drepper
2010-03-18 19:15 ` Ingo Molnar
2010-03-18 19:37 ` drepper
2010-03-18 20:18 ` Ingo Molnar
2010-03-18 20:39 ` drepper
2010-03-18 20:56 ` Ingo Molnar
2010-03-18 22:06 ` Alan Cox
2010-03-18 22:16 ` Ingo Molnar
2010-03-19 7:22 ` Avi Kivity
2010-03-21 13:27 ` Gabor Gombas
2010-03-18 21:02 ` Zachary Amsden
2010-03-18 21:15 ` Ingo Molnar
2010-03-18 22:19 ` Zachary Amsden
2010-03-18 22:44 ` Ingo Molnar
2010-03-19 7:21 ` Avi Kivity
2010-03-20 14:59 ` Andrea Arcangeli
2010-03-21 10:03 ` Avi Kivity
2010-03-18 9:22 ` Ingo Molnar
2010-03-18 10:32 ` Avi Kivity
2010-03-18 11:19 ` Ingo Molnar
2010-03-18 18:20 ` Frederic Weisbecker
2010-03-18 19:50 ` Frank Ch. Eigler
2010-03-18 20:47 ` Ingo Molnar
2010-03-18 8:44 ` Jes Sorensen
2010-03-18 9:54 ` Ingo Molnar
2010-03-18 10:40 ` Jes Sorensen
2010-03-18 10:58 ` Ingo Molnar
2010-03-18 13:23 ` Jes Sorensen
2010-03-18 14:22 ` Ingo Molnar
2010-03-18 14:45 ` Jes Sorensen
2010-03-18 16:54 ` Ingo Molnar
2010-03-18 18:10 ` Anthony Liguori
2010-03-19 14:53 ` Andrea Arcangeli
2010-03-18 14:38 ` Anthony Liguori
2010-03-18 14:44 ` Anthony Liguori
2010-03-16 22:30 ` oerg Roedel [this message]
2010-03-16 23:01 ` [PATCH] Enhance perf to collect KVM guest os statistics from host side Masami Hiramatsu
2010-03-17 7:27 ` Ingo Molnar
2010-03-16 7:48 ` Zhang, Yanmin
2010-03-16 9:28 ` Zhang, Yanmin
2010-03-16 9:33 ` Avi Kivity
2010-03-16 9:47 ` Ingo Molnar
2010-03-17 9:26 ` Zhang, Yanmin
2010-03-18 2:45 ` Zhang, Yanmin
2010-03-18 7:49 ` Zhang, Yanmin
2010-03-18 8:03 ` Ingo Molnar
2010-03-18 13:03 ` Arnaldo Carvalho de Melo
2010-03-16 9:32 ` Avi Kivity
2010-03-17 2:34 ` Zhang, Yanmin
2010-03-17 9:28 ` Sheng Yang
2010-03-17 9:41 ` Avi Kivity
2010-03-17 9:51 ` Sheng Yang
2010-03-17 10:06 ` Avi Kivity
2010-03-17 21:14 ` Zachary Amsden
2010-03-18 1:19 ` Sheng Yang
2010-03-18 4:50 ` Zachary Amsden
2010-03-18 5:22 ` Sheng Yang
2010-03-18 5:41 ` Sheng Yang
2010-03-18 8:47 ` Zachary Amsden
2010-03-19 3:38 ` Zhang, Yanmin
2010-03-19 8:21 ` Ingo Molnar
2010-03-19 17:29 ` oerg Roedel
2010-03-21 18:43 ` Ingo Molnar
2010-03-22 10:14 ` oerg Roedel
2010-03-22 10:37 ` Ingo Molnar
2010-03-22 10:59 ` Ingo Molnar
2010-03-22 11:47 ` Joerg Roedel
2010-03-22 12:26 ` Ingo Molnar
2010-03-23 13:18 ` Soeren Sandmann
2010-03-23 13:49 ` Andi Kleen
2010-03-23 14:04 ` Soeren Sandmann
2010-03-23 14:20 ` Andi Kleen
2010-03-23 14:29 ` Arnaldo Carvalho de Melo
2010-03-23 14:46 ` Frank Ch. Eigler
2010-03-23 14:10 ` Arnaldo Carvalho de Melo
2010-03-23 15:23 ` Peter Zijlstra
2010-03-22 7:24 ` Zhang, Yanmin
2010-03-22 16:44 ` Arnaldo Carvalho de Melo
2010-03-23 3:14 ` Zhang, Yanmin
2010-03-23 13:15 ` Arnaldo Carvalho de Melo
2010-03-24 1:39 ` Zhang, Yanmin
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=20100316223040.GH13108@8bytes.org \
--to=joro@8bytes.org \
--cc=Jes.Sorensen@redhat.com \
--cc=a.p.zijlstra@chello.nl \
--cc=avi@redhat.com \
--cc=gleb@redhat.com \
--cc=kvm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@elte.hu \
--cc=mtosatti@redhat.com \
--cc=sheng@linux.intel.com \
--cc=yanmin_zhang@linux.intel.com \
--cc=zamsden@redhat.com \
--cc=ziteng.huang@intel.com \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).