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From: "Hailong Yang" <hailong.yang1115@gmail.com>
To: linux-perf-users@vger.kernel.org
Subject: perf stat: how to capture the output when it is running in the backgroud
Date: Sun, 13 May 2012 23:47:37 +0800	[thread overview]
Message-ID: <4fafd79d.6586440a.2edc.ffffb185@mx.google.com> (raw)

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

             reply	other threads:[~2012-05-13 15:47 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-05-13 15:47 Hailong Yang [this message]
2012-05-13 19:08 ` perf stat: how to capture the output when it is running in the backgroud David Ahern
2012-05-14  2:19   ` Hailong Yang

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