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Date: Wed, 24 Jan 2018 08:39:18 +0100
From: Jiri Olsa <jolsa@redhat.com>
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Cc: Peter Zijlstra <peterz@infradead.org>, mingo@redhat.com,
        Alexander Shishkin <alexander.shishkin@linux.intel.com>,
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        Wang Nan <wangnan0@huawei.com>, linux-perf-users@vger.kernel.org,
        linux-kernel@vger.kernel.org, acme@redhat.com
Subject: Re: [PATCH 1/1] perf stat: Add support to print counts for fixed
 times
Message-ID: <20180124073918.GB8473@krava>
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On Wed, Jan 24, 2018 at 10:03:08AM +0800, 禹舟键 wrote:
> Hi Jirka
> How can you control the output for perf stat, if the "--interval-print" is
> not 1000, eg. 2000, 3000, 5000.
> 
> root@node10:/home$ ./perf stat -e cycles -a -I 2000 sleep 3
> #           time             counts unit events
>      2.001361101        695,569,361      cycles
>      3.003249250         57,904,006      cycles
> root@node10:/home$ ./perf stat -e cycles -a -I 2000 --times-print 3
> #           time             counts unit events
>      2.002784924        128,438,406
> cycles
>      4.004290885         93,128,097
> cycles
>      6.005726281        111,303,359      cycles


[jolsa@krava perf]$ sudo ./perf stat -e cycles -a -I 2000 --times-print 3
#           time             counts unit events
     2.000161257      1,197,889,478      cycles                                                      
     4.000424645      2,905,635,530      cycles                                                      
     6.000589943      1,658,546,001      cycles                                                      
[jolsa@krava perf]$ sudo ./perf stat -e cycles -a -I 2000 sleep 6
#           time             counts unit events
     2.000248489      1,224,257,116      cycles                                                      
     4.000489261      3,171,435,328      cycles                                                      
     6.000766440      4,092,029,501      cycles                                                      
     6.916537222        563,745,072      cycles                                                      

jirka