* perf stat: how to capture the output when it is running in the backgroud
@ 2012-05-13 15:47 Hailong Yang
2012-05-13 19:08 ` David Ahern
0 siblings, 1 reply; 3+ messages in thread
From: Hailong Yang @ 2012-05-13 15:47 UTC (permalink / raw)
To: linux-perf-users
Dear all,
I am running perf stat to collect the performance statistics of a already
running process. And I have a shell script to execute the perf stat as a
daemon process. But when I use the 'kill' command to stop the perf stat,
there is no output redirected to a file.
[root@dell06 ~]# (perf stat -p 7473 -x ,) 2> perftest &
[1] 15086
[root@dell06 ~]# kill 15086
[root@dell06 ~]#
[1]+ Terminated ( perf stat -p 7473 -x , ) 2> perftest
[root@dell06 ~]# cat perftest
[root@dell06 ~]#
Any clue?
Best Regards
Hailong
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: perf stat: how to capture the output when it is running in the backgroud
2012-05-13 15:47 perf stat: how to capture the output when it is running in the backgroud Hailong Yang
@ 2012-05-13 19:08 ` David Ahern
2012-05-14 2:19 ` Hailong Yang
0 siblings, 1 reply; 3+ messages in thread
From: David Ahern @ 2012-05-13 19:08 UTC (permalink / raw)
To: Hailong Yang; +Cc: linux-perf-users
On 5/13/12 9:47 AM, Hailong Yang wrote:
> Dear all,
>
> I am running perf stat to collect the performance statistics of a already
> running process. And I have a shell script to execute the perf stat as a
> daemon process. But when I use the 'kill' command to stop the perf stat,
> there is no output redirected to a file.
>
> [root@dell06 ~]# (perf stat -p 7473 -x ,) 2> perftest&
> [1] 15086
> [root@dell06 ~]# kill 15086
> [root@dell06 ~]#
> [1]+ Terminated ( perf stat -p 7473 -x , ) 2> perftest
> [root@dell06 ~]# cat perftest
> [root@dell06 ~]#
Try: kill -INT $pid
David
^ permalink raw reply [flat|nested] 3+ messages in thread
* RE: perf stat: how to capture the output when it is running in the backgroud
2012-05-13 19:08 ` David Ahern
@ 2012-05-14 2:19 ` Hailong Yang
0 siblings, 0 replies; 3+ messages in thread
From: Hailong Yang @ 2012-05-14 2:19 UTC (permalink / raw)
To: 'David Ahern'; +Cc: linux-perf-users
Thanks, David. That works.
Hailong
> -----Original Message-----
> From: David Ahern [mailto:dsahern@gmail.com]
> Sent: Monday, May 14, 2012 3:08 AM
> To: Hailong Yang
> Cc: linux-perf-users@vger.kernel.org
> Subject: Re: perf stat: how to capture the output when it is running in
the
> backgroud
>
> On 5/13/12 9:47 AM, Hailong Yang wrote:
> > Dear all,
> >
> > I am running perf stat to collect the performance statistics of a
already
> > running process. And I have a shell script to execute the perf stat as a
> > daemon process. But when I use the 'kill' command to stop the perf stat,
> > there is no output redirected to a file.
> >
> > [root@dell06 ~]# (perf stat -p 7473 -x ,) 2> perftest&
> > [1] 15086
> > [root@dell06 ~]# kill 15086
> > [root@dell06 ~]#
> > [1]+ Terminated ( perf stat -p 7473 -x , ) 2> perftest
> > [root@dell06 ~]# cat perftest
> > [root@dell06 ~]#
>
> Try: kill -INT $pid
>
> David
^ permalink raw reply [flat|nested] 3+ messages in thread
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2012-05-13 15:47 perf stat: how to capture the output when it is running in the backgroud Hailong Yang
2012-05-13 19:08 ` David Ahern
2012-05-14 2:19 ` Hailong Yang
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