Re: perf stat to collect the performance statistics of KVM process

[Andrew Theurer <habanero@linux.vnet.ibm.com>]

On 05/13/2012 10:56 AM, Hailong Yang wrote:
> Dear all,
>
> I am running perf stat to collect the performance statistics of the already
> running KVM guest VM 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. What I would like to do is
> that to collect performance counters of the guest VM process for a certain
> period and redirect the output to a log file, but without user interaction
> (such as using CTRL + C to stop the perf stat)
>
> [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?

Can you please try "kill -s INT <pid>"
>
> Best Regards
>
> Hailong
>

-Andrew Theurer