From: Adrian Hunter <adrian.hunter@intel.com>
To: Andi Kleen <ak@linux.intel.com>,
Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] perf dlfilter: Add dlfilter-show-cycles
Date: Tue, 7 Sep 2021 10:06:03 +0300 [thread overview]
Message-ID: <b8b1d870-9db2-4b0f-7138-c139e1ef878b@intel.com> (raw)
In-Reply-To: <7bee95a7-fa31-a801-8068-80c63ba6ccfe@linux.intel.com>
On 7/09/21 5:54 am, Andi Kleen wrote:
>
> On 9/6/2021 9:08 AM, Adrian Hunter wrote:
>> Add a new dlfilter to show cycles.
>>
>> Cycle counts are accumulated per CPU (or per thread if CPU is not recorded)
>> from IPC information, and printed together with the change since the last
>> print, at the start of each line.
>
>
> Thanks! An example how to use it would be nice
I started looking at making an example and noticed that this approach
does not work very well because the IPC cycle count only increases when
the IPC is output which (for CYC accurate mode) is only happens when a
CYC packet is output that corresponds to the current sample. Seems like
this needs a re-think, sorry.
next prev parent reply other threads:[~2021-09-07 7:05 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-06 16:08 [PATCH] perf dlfilter: Add dlfilter-show-cycles Adrian Hunter
2021-09-07 2:54 ` Andi Kleen
2021-09-07 7:06 ` Adrian Hunter [this message]
2021-09-08 15:18 ` Arnaldo Carvalho de Melo
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