RE: perf stat: how to capture the output when it is running in the backgroud

["Hailong Yang" <hailong.yang1115@gmail.com>]

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