> [jolsa@ibm-x3650m4-01 perf]$ sudo ./perf stat --topdown -I 1000 -a
> nmi_watchdog enabled with topdown. May give wrong results.
> Disable with echo 0 > /proc/sys/kernel/nmi_watchdog
> 1.002097350 retiring bad speculation
> frontend bound backend boun
On Fri, May 13, 2016 at 06:44:49PM -0700, Andi Kleen wrote:
> Note to reviewers: includes both tools and kernel patches.
> The kernel patches are at the beginning.
>
> [v2: Address review feedback.
> Metrics are now always printed, but colored when crossing threshold.
> --topdown implies --metric-
On Thu, May 19, 2016 at 04:51:30PM -0700, Andi Kleen wrote:
> On Mon, May 16, 2016 at 02:58:38PM +0200, Jiri Olsa wrote:
> > On Fri, May 13, 2016 at 06:44:49PM -0700, Andi Kleen wrote:
> >
> > SNIP
> >
> > >
> > > The formulas to compute the metrics are generic, they
> > > only change based
Note to reviewers: includes both tools and kernel patches.
The kernel patches are at the beginning.
[v2: Address review feedback.
Metrics are now always printed, but colored when crossing threshold.
--topdown implies --metric-only.
Various smaller fixes, see individual patches]
[v3: Add --single-t
On Mon, May 16, 2016 at 02:58:38PM +0200, Jiri Olsa wrote:
> On Fri, May 13, 2016 at 06:44:49PM -0700, Andi Kleen wrote:
>
> SNIP
>
> >
> > The formulas to compute the metrics are generic, they
> > only change based on the availability on the abstracted
> > input values.
> >
> > The ker
On Fri, May 13, 2016 at 06:44:49PM -0700, Andi Kleen wrote:
SNIP
>
> The formulas to compute the metrics are generic, they
> only change based on the availability on the abstracted
> input values.
>
> The kernel declares the events supported by the current
> CPU and perf stat then compu
Note to reviewers: includes both tools and kernel patches.
The kernel patches are at the beginning.
[v2: Address review feedback.
Metrics are now always printed, but colored when crossing threshold.
--topdown implies --metric-only.
Various smaller fixes, see individual patches]
[v3: Add --single-t
On Thu, May 05, 2016 at 04:03:57PM -0700, Andi Kleen wrote:
SNIP
> The kernel declares the events supported by the current
> CPU and perf stat then computes the formulas based on the
> available metrics.
>
>
> Example output:
>
> $ perf stat --topdown -I 1000 cmd
> 1.000735655
Note to reviewers: includes both tools and kernel patches.
The kernel patches are at the beginning.
[v2: Address review feedback.
Metrics are now always printed, but colored when crossing threshold.
--topdown implies --metric-only.
Various smaller fixes, see individual patches]
[v3: Add --single-t
Note to reviewers: includes both tools and kernel patches.
The kernel patches are at the beginning.
[v2: Address review feedback.
Metrics are now always printed, but colored when crossing threshold.
--topdown implies --metric-only.
Various smaller fixes, see individual patches]
[v3: Add --single-t
Note to reviewers: includes both tools and kernel patches.
The kernel patches are at the beginning.
[v2: Address review feedback.
Metrics are now always printed, but colored when crossing threshold.
--topdown implies --metric-only.
Various smaller fixes, see individual patches]
[v3: Add --single-t
> can't see this one (-16):
>
> [jolsa@krava perf]$ git remote update ak
> Fetching ak
> [jolsa@krava perf]$ git branch -r | grep top-down
> ak/perf/top-down-10
> ak/perf/top-down-11
> ak/perf/top-down-13
> ak/perf/top-down-2
Please try again, I pushed it again.
-Andi
On Tue, Mar 22, 2016 at 04:08:46PM -0700, Andi Kleen wrote:
SNIP
> In this case perf stat automatically enables --per-core mode and also requires
> global mode (-a) and avoiding other filters (no cgroup mode)
>
> When Hyper Threading is off this can be overriden with the --single-thread
> option
[v2: Address review feedback.
Metrics are now always printed, but colored when crossing threshold.
--topdown implies --metric-only.
Various smaller fixes, see individual patches]
[v3: Add --single-thread option and support it with HT off.
Clean up old HT workaround.
Improve documentation.
Various s
On Fri, Dec 18, 2015 at 01:31:18AM -0800, Stephane Eranian wrote:
> >> Why force --per-core when HT is on. I know you you need to aggregate
> >> per core, but
> >> you could still display globally. And then if user requests
> >> --per-core, then display per core.
> >
> > Global TopDown doesn't make
Andi,
On Thu, Dec 17, 2015 at 5:55 PM, Andi Kleen wrote:
> Thanks for testing.
>
>
> On Thu, Dec 17, 2015 at 03:31:30PM -0800, Stephane Eranian wrote:
>> I would not add a --topdown option but instead a --metric option with
>> arguments
>> such that other metrics could be added later:
>>
>>$
Thanks for testing.
On Thu, Dec 17, 2015 at 03:31:30PM -0800, Stephane Eranian wrote:
> I would not add a --topdown option but instead a --metric option with
> arguments
> such that other metrics could be added later:
>
>$ perf stat --metrics topdown -I 1000 -a sleep 100
>
> If you do this
On Thu, Dec 17, 2015 at 6:01 AM, Andi Kleen wrote:
> On Thu, Dec 17, 2015 at 02:27:58AM -0800, Stephane Eranian wrote:
>> > S0-C1 2 4175583320.00 topdown-slots-retired
>> > (100.00%)
>> > S0-C1 2 1743329246 topdown
On Thu, Dec 17, 2015 at 02:27:58AM -0800, Stephane Eranian wrote:
> > S0-C1 2 4175583320.00 topdown-slots-retired
> > (100.00%)
> > S0-C1 2 1743329246 topdown-recovery-bubbles #
> > 22.22% bad speculation
Andi,
On Tue, Dec 15, 2015 at 4:54 PM, Andi Kleen wrote:
> Note to reviewers: includes both tools and kernel patches.
> The kernel patches are at the end.
>
> This patchkit adds support for TopDown measurements to perf stat
> It applies on top of my earlier metrics patchkit, posted
> separately,
Note to reviewers: includes both tools and kernel patches.
The kernel patches are at the end.
This patchkit adds support for TopDown measurements to perf stat
It applies on top of my earlier metrics patchkit, posted
separately, and the --metric-only patchkit (also
posted separately)
TopDown is in
This patchkit adds support for TopDown to perf stat
It applies on top of my earlier metrics patchkit, posted
separately.
TopDown is intended to replace the frontend cycles idle/
backend cycles idle metrics in standard perf stat output.
These metrics are not reliable in many workloads,
due to out
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