* Appended data not reportable
@ 2013-01-04 22:28 David Flater
2013-01-04 23:17 ` David Ahern
0 siblings, 1 reply; 2+ messages in thread
From: David Flater @ 2013-01-04 22:28 UTC (permalink / raw)
To: Perf Users
With kernel/perf 3.7.1, trying to do something akin to the "sum" option of
gprof to pool the samples from multiple runs.
This option from the perf-record man page looked promising:
-A, --append
Append to the output file to do incremental profiling.
bash-4.2$ perf record -F 1000 ./app
bash-4.2$ perf record -F 1000 -A ./app
perf.data gets bigger, but then neither perf report nor perf script work. Both
say:
0x1a0 [0]: failed to process type: 0
Is this a regression?
Thanks,
--
David Flater, National Institute of Standards and Technology, U.S.A.
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Appended data not reportable
2013-01-04 22:28 Appended data not reportable David Flater
@ 2013-01-04 23:17 ` David Ahern
0 siblings, 0 replies; 2+ messages in thread
From: David Ahern @ 2013-01-04 23:17 UTC (permalink / raw)
To: David Flater; +Cc: Perf Users
On 1/4/13 3:28 PM, David Flater wrote:
> With kernel/perf 3.7.1, trying to do something akin to the "sum" option of
> gprof to pool the samples from multiple runs.
>
> This option from the perf-record man page looked promising:
> -A, --append
> Append to the output file to do incremental profiling.
>
> bash-4.2$ perf record -F 1000 ./app
> bash-4.2$ perf record -F 1000 -A ./app
>
> perf.data gets bigger, but then neither perf report nor perf script work. Both
> say:
> 0x1a0 [0]: failed to process type: 0
>
> Is this a regression?
It's been broken for a long time now.
David
^ permalink raw reply [flat|nested] 2+ messages in thread
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2013-01-04 22:28 Appended data not reportable David Flater
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