From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Ahern <dsahern@gmail.com>
Subject: Re: perf stat: how to capture the output when it is running in the
 backgroud
Date: Sun, 13 May 2012 13:08:12 -0600
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To: Hailong Yang <hailong.yang1115@gmail.com>
Cc: linux-perf-users@vger.kernel.org

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