On 6/15/15 8:50 PM, Hemant Kumar wrote:
+/*
+ * Get the instruction pointer from the tracepoint data
+ */
+u64 arch__get_ip(struct perf_evsel *evsel, struct perf_sample *data)
+{
+ u64 tp_ip = data-ip;
+ int trap;
+
+ if (!strcmp(KVMPPC_EXIT, evsel-name)) {
+ trap
On 6/16/15 7:24 PM, Hemant Kumar wrote:
Because, this depends on the kernel tracepoint kvm_hv:kvm_guest_exit.
perf_prepare_sample() in the kernel side sets the event-header.misc
field to
PERF_RECORD_MISC_KERNEL through perf_misc_flags(pt_regs). In case of
tracepoints which always get hit in the
On 7/31/14, 5:13 AM, Christian Borntraeger wrote:
For lots of exits the min time (and sometimes max) is 0 or 1. Lets
increase the accurancy similar to what the average field alread does.
Seems reasonable to me.
Acked-by: David Ahern dsah...@gmail.com
Cc: Paolo Bonzini pbonz...@redhat.com
On 5/5/14, 4:27 AM, Christian Borntraeger wrote:
diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c
index 922706c..806c0e4 100644
--- a/tools/perf/builtin-kvm.c
+++ b/tools/perf/builtin-kvm.c
@@ -75,7 +75,7 @@ struct kvm_events_ops {
bool (*is_end_event)(struct perf_evsel
look good to me
Review feedback is welcome.
CC-ing David Ahern
I don't have the original emails, but looking at
https://lkml.org/lkml/2014/4/25/331
[PATCH 01/11] s390: add sie exit reasons tables
[PATCH 02/11] KVM: s390: Use trace tables from sie.h
[PATCH 03/11] KVM: s390: decoder of SIE
;
+ init_stats(event-total.stats);
return event;
}
Reviewed-by: David Ahern dsah...@gmail.com
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On 10/31/13, 2:09 AM, Masami Hiramatsu wrote:
(2013/10/30 23:03), David Ahern wrote:
On 10/29/13 11:59 PM, Masami Hiramatsu wrote:
(2013/10/29 11:58), David Ahern wrote:
To back out a bit, my end goal is to be able to create and merge
perf-events from any context on a KVM-based host -- guest
On 10/29/13 11:59 PM, Masami Hiramatsu wrote:
(2013/10/29 11:58), David Ahern wrote:
To back out a bit, my end goal is to be able to create and merge
perf-events from any context on a KVM-based host -- guest userspace,
guest kernel space, host userspace and host kernel space (userspace
events
On 10/30/13 8:20 AM, Gleb Natapov wrote:
So can you explain a little bit more about how this will work? You run
perf on a host and get both host and guest events? How do you pass
events from guest to host in this case?
The intent is to allow data capture to occur in both contexts (host and
On 10/28/13 7:15 AM, Peter Zijlstra wrote:
Any suggestions on how to do this and without impacting performance. I
noticed the MSR path seems to take about twice as long as the current
implementation (which I believe results in rdtsc in the VM for x86 with
stable TSC).
So assuming all the TSCs
Often when debugging performance problems in a virtualized environment
you need to correlate what is happening in the guest with what is
happening in the host. To correlate events you need a common time basis
(or the ability to directly correlate the two).
The attached patch paravirtualizes
[Added Gleb and kvm list]
On 9/23/13 9:53 AM, William Cohen wrote:
Hi All,
I was curious to see how well (or poorly) perf events work in a virtualizated environment. As a
little experiment I have tried building papi from the git repo in a fedora rawhide guest vm running
on an Intel ivy
[added kvm devel list and Xiao who implemented the original perf-kvm as
I recall]
On 6/14/13 5:11 PM, Cody P Schafer wrote:
I am under the impression the limitations are these 2 snippets in
arch/x86/kernel/cpu/perf_event.c:
Yep, that's disabling the in-kernel callchain generation (the in-perf
forgot to add kvm list to the cc list.
Original Message
Subject: [PATCH 00/16] perf: kvm live mode
Date: Sat, 25 May 2013 18:24:40 -0600
From: David Ahern dsah...@gmail.com
To: linux-ker...@vger.kernel.org
CC: a...@ghostprotocols.net, mi...@kernel.org, fweis...@gmail.com,
pet
On 3/3/13 11:15 PM, Mohamad Gebai wrote:
host kernel version?
3.8 compiled from perf-kvm-live-3.8
I made no changes to the kernel side so essentially you are running v3.8
unmodified.
guest kernel?
3.8.1
qemu-kvm command line? (leave out the disk and network arguments -- just
the rest)
On 3/3/13 10:36 PM, Mohamad Gebai wrote:
Thank you for this, I have been testing it for the last couple of days, I can
see that perf kvm is getting more stable. Though I just realized that if you
launch perf kvm as soon as you start a VM, the VM fails to boot. Any idea why
this happens?
no,
On 2/27/13 9:39 AM, David Ahern wrote:
I have been playing with the live mode a bit lately. I'll add a debug to
note 2 consecutive entry events without an exit -- see if it sheds some
light on it.
If you feel game take this for a spin:
https://github.com/dsahern/linux/commits/perf-kvm-live
On 10/10/12 11:54 AM, Raghavendra K T wrote:
No, I did something like this
perf kvm --guestvmlinux ./vmlinux.guest top -g -U -d 3. Yes that is a
good idea.
(I am getting some segfaults with perf top, I think it is already fixed
but yet to see the patch that fixes)
What version of perf:
/header.c | 59 +++-
tools/perf/util/header.h |1 +
tools/perf/util/thread.h |2 +
6 files changed, 929 insertions(+), 6 deletions(-)
Acked-by: David Ahern dsah...@gmail.com
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On 9/17/12 2:31 AM, Dong Hao wrote:
From: Xiao Guangrong xiaoguangr...@linux.vnet.ibm.com
Then, the code can be shared between kvm events and perf stat
[ Dong Hao haod...@linux.vnet.ibm.com: rebase it on acme's git tree ]
Signed-off-by: Xiao Guangrong xiaoguangr...@linux.vnet.ibm.com
On 9/17/12 2:31 AM, Dong Hao wrote:
From: Xiao Guangrong xiaoguangr...@linux.vnet.ibm.com
Then, the code can be shared between kvm events and perf stat
[ Dong Hao haod...@linux.vnet.ibm.com: rebase it on acme's git tree ]
Signed-off-by: Xiao Guangrong xiaoguangr...@linux.vnet.ibm.com
On 9/18/12 7:53 PM, Xiao Guangrong wrote:
Does not apply to Arnaldo's latest perf/core branch.
The patch has already been applied to this branch:
http://git.kernel.org/?p=linux/kernel/git/acme/linux.git;a=commit;h=0007eceaceb11520071d053acfe06ee3326b1d13
Did not expect that. ok. I'll try
On 9/13/12 8:56 PM, Xiao Guangrong wrote:
We'd better keep the record/report function, sometimes, we can only get
perf.data
from the customers whose machine can not be reached for us.
Especially, other tracepoints are also interesting for us when the customers
encounter
the performance issue,
On 9/13/12 7:45 AM, Arnaldo Carvalho de Melo wrote:
Em Wed, Sep 12, 2012 at 10:56:44PM -0600, David Ahern escreveu:
static const char * const kvm_usage[] = {
+perf kvm [options] {top|record|report|diff|buildid-list|stat},
The usage for the report/record sub commands of stat is never
static const char * const kvm_usage[] = {
-perf kvm [options] {top|record|report|diff|buildid-list},
+perf kvm [options] {top|record|report|diff|buildid-list|stat},
NULL
};
The usage for the report/record sub commands of stat is never shown. e.g.,
$ perf kvm stat
-- shows
On 9/3/12 2:48 AM, don wrote:
于 2012年08月31日 02:29, David Ahern 写道:
In addition to Andrew's comment about making the stats struct and
functions generic...
Yes. :-)
On 8/27/12 3:51 AM, Dong Hao wrote:
---8---
+static void exit_event_decode_key(struct event_key *key, char
decode[20
In addition to Andrew's comment about making the stats struct and
functions generic...
On 8/27/12 3:51 AM, Dong Hao wrote:
---8---
+static void exit_event_decode_key(struct event_key *key, char decode[20])
+{
+ const char *exit_reason = get_exit_reason(key-key);
+
+
On 8/28/12 12:35 AM, Andrew Jones wrote:
This is the second user. As I said, move the stats code from
builtin-stat.c. Or are you suggesting to duplicate the code once,
and then refactor the second (really the third) time it's needed?
gah, I misunderstood your comment. I see your point now.
On 8/27/12 3:59 AM, Xiao Guangrong wrote:
CC David.
Hi David,
I should apologize to you that Dong forgot to post the patchset
to you. Could you pick these up from the mail list?
Yes, I do catch all perf related emails to LKML. I'll take a look at the
patches today or tomorrow.
David
--
On 8/27/12 10:58 AM, Dale Swanston wrote:
Good idea. I'll try that.
But are there any tools available to determine what the VM is doing when
it appears hung? I've looked but haven't found much on debug or
diagnostics on a running VM. Any links?
If you have the vmlinux, enable the gdbserver
On 8/27/12 9:53 AM, Andrew Jones wrote:
On Mon, Aug 27, 2012 at 05:51:46PM +0800, Dong Hao wrote:
snip
+struct event_stats {
+ u64 count;
+ u64 time;
+
+ /* used to calculate stddev. */
+ double mean;
+ double M2;
+};
How about moving the stats functions from
This one does not apply to Arnaldo's current perf/core branch. Please
rebase.
David
On 8/23/12 7:15 PM, Dong Hao wrote:
From: Xiao Guangrong xiaoguangr...@linux.vnet.ibm.com
Add 'perf kvm stat' support to analyze kvm vmexit/mmio/ioport smartly
Usage:
- kvm stat
run a command and gather
On 8/16/12 5:17 AM, Peter Zijlstra wrote:
If you don't mind printing a warning every time a Linux guest boots ;-)
That feature already exists today for perf related probing. e.g.,
[585929.678746] kvm [10752]: vcpu0 unhandled rdmsr: 0x345
[585929.709870] kvm_set_msr_common: 54 callbacks
Thanks for resubmitting this; it was on my to-do list as well.
On 8/9/12 9:19 PM, Dong Hao wrote:
+static bool kvm_events_exist(const char *event)
+{
+ char evt_path[MAXPATHLEN];
+ int fd;
+
+ snprintf(evt_path, MAXPATHLEN, %s/kvm/%s/id, tracing_events_path,
+
On 8/9/12 3:42 AM, Avi Kivity wrote:
On 08/08/2012 07:27 PM, David Ahern wrote:
Not sure if KVM is the culprit, but it is the last line shown on the
console. I have to power cycle the server to reboot.
Have you tried rmmoding the kvm modules before reboot?
Were any guests running during
On 8/9/12 11:26 AM, Alex Williamson wrote:
On Thu, 2012-08-09 at 11:10 -0600, David Ahern wrote:
On 8/9/12 3:42 AM, Avi Kivity wrote:
On 08/08/2012 07:27 PM, David Ahern wrote:
Not sure if KVM is the culprit, but it is the last line shown on the
console. I have to power cycle the server
On 8/9/12 1:03 PM, Alex Williamson wrote:
I think you should be ok with just what is in Linus' tree now. The
change in pci_acs_path_enabled is the same kind of bug, but I don't
think you'll hit it with the fixed iommu code. Please let me know if
that's not the case. Thanks,
Indeed, latest
Not sure if KVM is the culprit, but it is the last line shown on the
console. I have to power cycle the server to reboot.
David
attachment: kvm-3.6-rc1.png
On 6/4/12 12:28 PM, Johannes Bauer wrote:
On 04.06.2012 10:53, Gleb Natapov wrote:
On Sun, Jun 03, 2012 at 06:25:33PM +0200, Johannes Bauer wrote:
Therefore, I've uploaded the compressed trace.dat file, so you can maybe
have a look why the report tool barfs and interpret it correctly. I
can't
On 3/23/12 12:32 PM, Thomas Lendacky wrote:
Quick description of the tests:
TCP_RR and UDP_RR using 256 byte request/response size in 1, 10, 30
and 60 instances
TCP_STREAM and TCP_MAERTS using 256, 1K, 4K and 16K message sizes
and 1 and 4 instances
Remote host to VM using 1, 4,
On 2/28/12 10:24 AM, Avi Kivity wrote:
On 02/28/2012 05:55 PM, Joerg Roedel wrote:
__init int amd_pmu_init(void)
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 5fa553b..773fee2 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -29,6 +29,7 @@
Finally got back to this. Overall nicely written command. Few comments
and one for Arnaldo at the bottom.
On 2/9/12 2:09 AM, Xiao Guangrong wrote:
Add 'perf kvm-events' support to analyze kvm vmexit/mmio/ioport smartly
Usage:
- trace kvm events:
perf kvm-events record, or, if other
On 2/20/12 8:52 PM, Xiao Guangrong wrote:
+/* Both begin and end events did not get the key. */
+if (!event key-key == INVALID_KEY)
+return;
+
Should not be able to get here with event unset, so the next 2 lines should not
be needed. ie., you only want to process events where
On 2/15/12 9:59 PM, Xiao Guangrong wrote:
Okay, i will post the next version after collecting your new comments!
Thanks for your time, David! :)
I had more comments, but got sidetracked and forgot to come back to
this. I still haven't looked at the code yet, but some comments from
On 02/13/2012 03:06 AM, Xiao Guangrong wrote:
On 02/13/2012 01:32 PM, David Ahern wrote:
[sorry for the top post - you would think Android would have a better mail
client]
If the first patch is needed then kvm-events will not work with older,
unpatched kernels. That's a big limitation
Compile fails on Fedora 16, x86_64 with latest tip-perf-core branch:
In file included from builtin-kvm-events.c:19:0:
../../arch/x86/include/asm/svm.h:133:1: error: packed attribute is
unnecessary for ‘vmcb_seg’ [-Werror=packed]
../../arch/x86/include/asm/svm.h:178:1: error: packed attribute is
...@linux.vnet.ibm.com wrote:
On 02/13/2012 11:04 AM, David Ahern wrote:
Compile fails on Fedora 16, x86_64 with latest tip-perf-core branch:
In file included from builtin-kvm-events.c:19:0:
../../arch/x86/include/asm/svm.h:133:1: error: packed attribute is
unnecessary for ‘vmcb_seg’ [-Werror=packed
On 02/07/2012 11:14 PM, Xiao Guangrong wrote:
On 02/08/2012 01:55 AM, David Ahern wrote:
On 02/07/2012 06:08 AM, Xiao Guangrong wrote:
Add 'perf kvm-events' support to analyze kvm vmexit/mmio/ioport smartly
example output?
You can find a example output at this website:
http
On 02/08/2012 08:07 PM, Xiao Guangrong wrote:
Thanks for your review and explanation!
The code of commit_pager_choice():
static void commit_pager_choice(void)
{
switch (use_pager) {
case 0:
setenv(PERF_PAGER, cat, 1);
break;
case 1:
On 02/07/2012 06:08 AM, Xiao Guangrong wrote:
Add 'perf kvm-events' support to analyze kvm vmexit/mmio/ioport smartly
example output?
Usage:
- trace kvm events:
perf kvm-events record, or, if other tracepoints are also
interesting, we can append the events like this:
On 01/17/2012 04:55 AM, Marcelo Tosatti wrote:
On Tue, Jan 17, 2012 at 10:28:11AM +0800, Xiao Guangrong wrote:
On 01/16/2012 05:38 PM, Avi Kivity wrote:
On 01/16/2012 11:32 AM, Xiao Guangrong wrote:
- trace vcpu_id for these events
We can infer the vcpu id from the kvm_entry tracepoints,
On 01/17/2012 07:32 PM, Xiao Guangrong wrote:
There is an ongoing 'discussion' about modifying existing tracepoints
which your proposed patch violates. This is the start of it:
Hmm, i think we can still add completed tracepoints in the new version kernel,
if old version kernel is used, we
On 01/16/2012 02:30 AM, Xiao Guangrong wrote:
This tool is very like xenoprof(if i remember correctly), and traces kvm
events
smartly. currently, it supports vmexit/mmio/ioport events.
Usage:
- to trace kvm events:
# ./perf kvm-events record
- show the result
# ./perf kvm-events
On 01/16/2012 07:41 PM, Xiao Guangrong wrote:
Have you thought about dumping a time history -- something similar to
what perf-script can do with dumping events but adding in kvm-specific
analysis like what you are doing in these examples?
I will look into it and put it to my todo list if
On 01/11/2012 11:26 PM, Gleb Natapov wrote:
On Wed, Jan 11, 2012 at 01:47:55PM -0700, David Ahern wrote:
Using latest kernel tree (e343a895a9f342f239c5e3c5ffc6c0b1707e6244)
which has KVM bits for using PMU in the guest. Host and guest are both
running Fedora 16, 64-bit, with this kernel
On 01/12/2012 07:14 AM, Gleb Natapov wrote:
This is MSR_OFFCORE_RSP_0 MSR which is not (yet?) supported. What is
your host cpu and qemu command line?
Host CPU: Intel(R) Xeon(R) CPU E5540 @ 2.53GHz
and '-cpu host' is used on the qemu command line.
Use -cpu host,model=29 should
Using latest kernel tree (e343a895a9f342f239c5e3c5ffc6c0b1707e6244)
which has KVM bits for using PMU in the guest. Host and guest are both
running Fedora 16, 64-bit, with this kernel.
Running this command in the guest:
perf stat -ddd -- openssl speed aes
Generates this in the host:
On 10/30/2011 10:53 AM, Gleb Natapov wrote:
KVM needs to know perf capability to decide which PMU it can expose to a
guest.
Signed-off-by: Gleb Natapov g...@redhat.com
---
arch/x86/include/asm/perf_event.h | 11 +++
arch/x86/kernel/cpu/perf_event.c | 11 +++
On 10/30/2011 10:53 AM, Gleb Natapov wrote:
From: Avi Kivity a...@redhat.com
Provide a CPUID leaf that describes the emulated PMU.
Signed-off-by: Avi Kivity a...@redhat.com
Signed-off-by: Gleb Natapov g...@redhat.com
---
arch/x86/kvm/x86.c | 23 ++-
1 files
On 11/01/2011 10:13 AM, Gleb Natapov wrote:
On Tue, Nov 01, 2011 at 09:49:19AM -0600, David Ahern wrote:
On 10/30/2011 10:53 AM, Gleb Natapov wrote:
KVM needs to know perf capability to decide which PMU it can expose to a
guest.
Signed-off-by: Gleb Natapov g...@redhat.com
---
arch/x86
On 11/01/2011 10:18 AM, Gleb Natapov wrote:
On Tue, Nov 01, 2011 at 09:49:27AM -0600, David Ahern wrote:
On 10/30/2011 10:53 AM, Gleb Natapov wrote:
From: Avi Kivity a...@redhat.com
Provide a CPUID leaf that describes the emulated PMU.
Signed-off-by: Avi Kivity a...@redhat.com
Signed-off
On 11/01/2011 10:40 AM, Gleb Natapov wrote:
If PERF_EVENTS is disabled in the host kernel will KVM return the right
thing for the guest that might have PERF_EVENTS enabled?
With correct implementation of perf_get_x86_pmu_capability() it should.
PERF_EVENTS disable version should set
On 10/18/2011 04:29 AM, Avi Kivity wrote:
Almost all the exits show [FAILED TO PARSE], would this be a problem?
Did you 'make install' trace-cmd? run it from outside the chroot.
You need to install the plugins: make install_plugins
David
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On 10/05/2011 01:54 PM, Robin Lee Powell wrote:
Is it possible to get perf kvm record to record only what's going on
on a single VM? The options seem to be --host (all host data) and
--guest (all VM data).
-p pid argument after the record.
David
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On 08/30/2011 10:29 AM, Chris Friesen wrote:
I'm in a bit of an odd situation. We run an embedded version of linux
on many different boards with different vendor agreements so it's
painful to upgrade kernel versions.
I've been asked to provide VT-d support for KVM on our kernel (primarily
On 08/30/2011 12:11 PM, Chris Friesen wrote:
On 08/30/2011 11:55 AM, David Ahern wrote:
On 08/30/2011 10:29 AM, Chris Friesen wrote:
I'm in a bit of an odd situation. We run an embedded version of linux
on many different boards with different vendor agreements so it's
painful to upgrade
On 08/30/2011 01:39 PM, Chris Friesen wrote:
On 08/30/2011 12:31 PM, David Ahern wrote:
In my case I am setting the MAC address for the VFs in the host at boot;
they are getting reset on passthrough so the VM driver creates a random
one. A backport of commit a6b5ea3 fixes one aspect. Looking
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On 08/03/2011 09:00 AM, Michael S. Tsirkin wrote:
On Wed, Aug 03, 2011 at 07:55:47AM -0600, David Ahern wrote:
Tested-by: David Ahern daah...@cisco.com
David
Applied, thanks very much.
I assume this will make 0.15 since it is a regression? haven't seen the
patch applied to that branch
On 08/04/2011 01:17 PM, Michael S. Tsirkin wrote:
On Thu, Aug 04, 2011 at 12:48:49PM -0600, David Ahern wrote:
On 08/03/2011 09:00 AM, Michael S. Tsirkin wrote:
On Wed, Aug 03, 2011 at 07:55:47AM -0600, David Ahern wrote:
Tested-by: David Ahern daah...@cisco.com
David
Applied, thanks
On 08/03/2011 06:24 AM, Michael S. Tsirkin wrote:
On Wed, Aug 03, 2011 at 02:48:05PM +0300, Avi Kivity wrote:
On 08/01/2011 08:44 PM, David Ahern wrote:
qemu-kvm.git as of:
commit dacdc4b10bafbb21120e1c24a9665444768ef999
Merge: 7b69d4f 0af4922
Author: Avi Kivitya...@redhat.com
Date: Sun
qemu-kvm.git as of:
commit dacdc4b10bafbb21120e1c24a9665444768ef999
Merge: 7b69d4f 0af4922
Author: Avi Kivity a...@redhat.com
Date: Sun Jul 31 11:42:26 2011 +0300
Merge branch 'upstream-merge' into next
is aborting with the error:
qemu-kvm: qemu-kvm.git/hw/vhost.c:123:
On 08/01/2011 11:44 AM, David Ahern wrote:
qemu-kvm.git as of:
commit dacdc4b10bafbb21120e1c24a9665444768ef999
Merge: 7b69d4f 0af4922
Author: Avi Kivity a...@redhat.com
Date: Sun Jul 31 11:42:26 2011 +0300
Merge branch 'upstream-merge' into next
is aborting with the error
On 06/27/2011 02:18 AM, Troels Arvin wrote:
David Ahern wrote:
82576EB and a Dell R410 are working fine for me, but my host OS is
Fedora 14, not RHEL6.
82576EB is a dual-port embedded NIC?
I have a quad-port PCIe card.
(The 82576 which is in my R710 is a quad-port PCIe card.)
Does
On 06/27/2011 08:40 AM, Avi Kivity wrote:
On 06/27/2011 05:15 PM, Chris Friesen wrote:
Maybe it's just a documentation thing. I'm just getting into KVM and
trying to figure everything out, and I don't see a step-by-step guide
to configuring a host/guest system with either SR-IOV or Intel's
On 06/25/2011 02:53 AM, Troels Arvin wrote:
Hello,
Chris Friesen wrote:
Is anyone working on SR-IOV for KVM, specifically for networking?
KVM is one of the few virtualization systems which supports SR-IOV.
82576EB and a Dell R410 are working fine for me, but my host OS is
Fedora 14, not
On 06/16/2011 07:53 AM, Avi Kivity wrote:
On 06/15/2011 07:51 PM, David Ahern wrote:
The qemu-kvm change is setting the pmu version to 1, and your patchset
introduces v1 event constraints. So based on intel_pmu_init model=0 is
an appropriate model - and a required parameter (-cpu host,model
On 06/16/2011 08:08 AM, David Ahern wrote:
Command:
perf stat -e instructions openssl speed aes
Hmm.. this might be the wrong benchmark for this. I thought
openssl-speed was a purely CPU intensive benchmark which should have
fairly similar performance numbers in both host and guest. I seem
On 06/16/2011 08:20 AM, Avi Kivity wrote:
On 06/16/2011 05:19 PM, David Ahern wrote:
On 06/16/2011 08:08 AM, David Ahern wrote:
Command:
perf stat -e instructions openssl speed aes
Hmm.. this might be the wrong benchmark for this. I thought
openssl-speed was a purely CPU intensive
On 06/16/2011 08:36 AM, Avi Kivity wrote:
On 06/16/2011 05:32 PM, David Ahern wrote:
Seems to be a side effect of running perf-stat in the guest. Running
just 'openssl speed aes' in both host and guest shows very similar
numbers (for the first 3 columns). Adding the 'perf stat
On 06/16/2011 09:08 AM, Peter Zijlstra wrote:
On Thu, 2011-06-16 at 08:08 -0600, David Ahern wrote:
Command:
perf stat -e instructions openssl speed aes
Guest:
135,522,189,056 instructions #0.00 insns per cycle
Host:
346,082,922,185 instructions
On 06/16/2011 09:08 AM, Peter Zijlstra wrote:
On Thu, 2011-06-16 at 08:08 -0600, David Ahern wrote:
Command:
perf stat -e instructions openssl speed aes
Guest:
135,522,189,056 instructions #0.00 insns per cycle
Host:
346,082,922,185 instructions
On 06/16/2011 09:27 AM, Peter Zijlstra wrote:
Sure, I've got a couple of those things lying around:
# perf stat -e instructions:u ./loop_1b_instructions-4x
Performance counter stats for './loop_1b_instructions-4x':
4,000,085,344 instructions:u#0.00 insns per cycle
On 06/16/2011 09:59 AM, Avi Kivity wrote:
On 06/16/2011 06:34 PM, David Ahern wrote:
main ()
{
int i;
fork();
fork();
What happens without the two forks?
you have a 1-billion instruction benchmark since there is only 1 process.
David
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To unsubscribe from
On 06/16/2011 10:31 AM, Avi Kivity wrote:
On 06/16/2011 07:04 PM, David Ahern wrote:
On 06/16/2011 09:59 AM, Avi Kivity wrote:
On 06/16/2011 06:34 PM, David Ahern wrote:
main ()
{
int i;
fork();
fork();
What happens without the two
On 06/15/2011 02:57 AM, Avi Kivity wrote:
Okay. If you do anything interesting with it, please let us know. I
only tested the watchdog, 'perf top', and 'perf stat'.
For the following I was using the userspace command from latest
perf-core branch.
cycles H/W event is not working for me, so
On 06/15/2011 07:22 AM, Avi Kivity wrote:
On 06/15/2011 03:40 PM, David Ahern wrote:
On 06/15/2011 02:57 AM, Avi Kivity wrote:
Okay. If you do anything interesting with it, please let us know. I
only tested the watchdog, 'perf top', and 'perf stat'.
For the following I was using
On 06/15/2011 10:27 AM, Avi Kivity wrote:
On 06/15/2011 07:08 PM, David Ahern wrote:
What does
dmesg say about Perf?
[0.050995] Performance Events: Nehalem events, core PMU driver.
[0.051466] ... version:1
[0.052998] ... bit width: 40
On 06/14/2011 02:36 AM, Avi Kivity wrote:
On 06/13/2011 10:55 PM, David Ahern wrote:
On 06/13/2011 07:34 AM, Avi Kivity wrote:
This patchset exposes an emulated version 1 architectural performance
monitoring unit to KVM guests. The PMU is emulated using perf_events,
so the host kernel
On 06/14/2011 11:24 AM, Jan Kiszka wrote:
On 2011-06-14 19:15, David Ahern wrote:
On 06/14/2011 02:36 AM, Avi Kivity wrote:
On 06/13/2011 10:55 PM, David Ahern wrote:
On 06/13/2011 07:34 AM, Avi Kivity wrote:
This patchset exposes an emulated version 1 architectural performance
On 06/14/2011 11:33 AM, David Ahern wrote:
Avi: still no luck:
[0.047996] Performance Events: unsupported p6 CPU model 0 no PMU
driver, software events only.
qemu-kvm next branch, ce5f0a588b740e8f28f46a6009e12cfa72edc51f with your
perfmon cpuid change. Host and guest are both running
On 06/14/2011 11:48 AM, David Ahern wrote:
On 06/14/2011 11:33 AM, David Ahern wrote:
Avi: still no luck:
[0.047996] Performance Events: unsupported p6 CPU model 0 no PMU
driver, software events only.
qemu-kvm next branch, ce5f0a588b740e8f28f46a6009e12cfa72edc51f with your
perfmon
On 06/13/2011 07:35 AM, Avi Kivity wrote:
Intercept RDPMC and forward it to the PMU emulation code.
Signed-off-by: Avi Kivity a...@redhat.com
---
arch/x86/kvm/vmx.c | 15 ++-
1 files changed, 14 insertions(+), 1 deletions(-)
diff --git a/arch/x86/kvm/vmx.c
On 06/13/2011 10:29 AM, Avi Kivity wrote:
On 06/13/2011 07:17 PM, David Ahern wrote:
On 06/13/2011 07:35 AM, Avi Kivity wrote:
Intercept RDPMC and forward it to the PMU emulation code.
Signed-off-by: Avi Kivitya...@redhat.com
---
arch/x86/kvm/vmx.c | 15 ++-
1
On 06/13/2011 07:35 AM, Avi Kivity wrote:
diff --git a/arch/x86/kvm/pmu.c b/arch/x86/kvm/pmu.c
new file mode 100644
index 000..763e763
--- /dev/null
+++ b/arch/x86/kvm/pmu.c
@@ -0,0 +1,255 @@
+/*
+ * Kernel-based Virtual Machine -- Performane Monitoring Unit support
+ *
+ * Copyright
On 06/13/2011 11:38 AM, Ingo Molnar wrote:
I should have known that. Is there some git magic I can use to
avoid cloning yet another tree (I already have Ingo's tree for
perf-core and perf-urgent along with Linus' tree)?
You can use 'git remote add kvm ...' and then 'git remote update'.
On 06/13/2011 07:34 AM, Avi Kivity wrote:
This patchset exposes an emulated version 1 architectural performance
monitoring unit to KVM guests. The PMU is emulated using perf_events,
so the host kernel can multiplex host-wide, host-user, and the
guest on available resources.
Any particular
On 06/06/2011 05:33 AM, André Weidemann wrote:
I also wanted to give EHCI support a try. Unfortunately your patch does
not apply to current qemu-kvm git clone. Changes in hw/pc_piix.c and
usb-linux.c make the patch fail. I was able to fix most rejects by hand,
but the last reject in
On 05/20/11 03:12, Алексей Кашин wrote:
Hi.
Server with two gigabit NIC's. I'm trying to setup a bridge with a
bonded device (2 links,balance-rr).
host# cat /etc/network/interfaces
auto lo
iface lo inet loopback
auto bond0
iface bond0 inet manual
slaves eth0 eth1
On 05/18/11 13:56, Sasha Levin wrote:
If user haven't specified cpu count for the guest, use
the amount of online cpus on the host.
Signed-off-by: Sasha Levin levinsasha...@gmail.com
---
tools/kvm/kvm-run.c |9 ++---
1 files changed, 6 insertions(+), 3 deletions(-)
diff --git
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