* perf record and multiple events
@ 2010-02-17 17:38 Eric B Munson
2010-02-18 13:47 ` Peter Zijlstra
0 siblings, 1 reply; 3+ messages in thread
From: Eric B Munson @ 2010-02-17 17:38 UTC (permalink / raw)
To: linux-kernel
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While testing perf record I found that when multiple events are specified
on the command line, i.e. perf record -e dTLB-misses -e cache-misses,
the are lumped into a single category on output from perf report. The
same event specification gives two event categories when using perf stat.
Is this working as expected or should I see seperate entries in the report
for each event?
--
Eric B Munson
IBM Linux Technology Center
ebmunson@us.ibm.com
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: perf record and multiple events
2010-02-17 17:38 perf record and multiple events Eric B Munson
@ 2010-02-18 13:47 ` Peter Zijlstra
2010-02-18 17:06 ` Eric B Munson
0 siblings, 1 reply; 3+ messages in thread
From: Peter Zijlstra @ 2010-02-18 13:47 UTC (permalink / raw)
To: Eric B Munson; +Cc: linux-kernel, Arnaldo Carvalho de Melo
On Wed, 2010-02-17 at 17:38 +0000, Eric B Munson wrote:
> While testing perf record I found that when multiple events are specified
> on the command line, i.e. perf record -e dTLB-misses -e cache-misses,
> the are lumped into a single category on output from perf report. The
> same event specification gives two event categories when using perf stat.
> Is this working as expected or should I see seperate entries in the report
> for each event?
The tools currently lack support for this, but patches are welcome.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: perf record and multiple events
2010-02-18 13:47 ` Peter Zijlstra
@ 2010-02-18 17:06 ` Eric B Munson
0 siblings, 0 replies; 3+ messages in thread
From: Eric B Munson @ 2010-02-18 17:06 UTC (permalink / raw)
To: Peter Zijlstra; +Cc: linux-kernel, Arnaldo Carvalho de Melo
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On Thu, 18 Feb 2010, Peter Zijlstra wrote:
> On Wed, 2010-02-17 at 17:38 +0000, Eric B Munson wrote:
> > While testing perf record I found that when multiple events are specified
> > on the command line, i.e. perf record -e dTLB-misses -e cache-misses,
> > the are lumped into a single category on output from perf report. The
> > same event specification gives two event categories when using perf stat.
> > Is this working as expected or should I see seperate entries in the report
> > for each event?
>
> The tools currently lack support for this, but patches are welcome.
>
Thanks, I'll start looking into it.
--
Eric B Munson
IBM Linux Technology Center
ebmunson@us.ibm.com
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^ permalink raw reply [flat|nested] 3+ messages in thread
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2010-02-17 17:38 perf record and multiple events Eric B Munson
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