From: Andi Kleen <andi@firstfloor.org>
To: David Ahern <dsahern@gmail.com>
Cc: Dennis Gnad <dennis.gnad@kit.edu>, linux-perf-users@vger.kernel.org
Subject: Re: Understanding timestamps in perf.data
Date: Wed, 02 Sep 2015 12:23:39 -0700 [thread overview]
Message-ID: <87oahk4ock.fsf@tassilo.jf.intel.com> (raw)
In-Reply-To: <55E72762.6030209@gmail.com> (David Ahern's message of "Wed, 2 Sep 2015 10:44:18 -0600")
David Ahern <dsahern@gmail.com> writes:
>
> The counter values are not relevant for profiling. They are programmed
> to rollover and generate an NMI which causes the sample to be taken.
Actually it's relevent if you use adaptive frequency mode
(-F or default, not using -c) because it varies then.
The count values are reported by default in perf script.
-Andi
next prev parent reply other threads:[~2015-09-02 19:23 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-02 9:28 Understanding timestamps in perf.data Dennis Gnad
2015-09-02 13:43 ` David Ahern
2015-09-02 15:18 ` Dennis Gnad
2015-09-02 16:44 ` David Ahern
2015-09-02 17:00 ` Vince Weaver
2015-09-02 17:00 ` David Ahern
2015-09-03 7:19 ` Dennis Gnad
2015-09-03 12:52 ` Vince Weaver
2015-09-03 14:46 ` Dennis Gnad
2015-09-03 15:17 ` Vince Weaver
2015-09-02 19:23 ` Andi Kleen [this message]
2015-09-02 19:25 ` David Ahern
2015-09-03 9:50 ` Dennis Gnad
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