linux-kernel - Re: perf record: can I specify multiple events and use different sample-after value

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Message-ID: <4F45ED78.2010007@lge.com>
Date:	Thu, 23 Feb 2012 16:40:40 +0900
From:	Namhyung Kim <namhyung.kim@....com>
To:	linux-kernel@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org
Subject: Re: perf record: can I specify multiple events and use different
 sample-after value

2012-02-23 3:57 AM, Yuanfang Chen wrote:
> On Wed, Feb 22, 2012 at 1:01 AM, Namhyung Kim <namhyung.kim@....com> wrote:
>> 2012-02-22 10:59 AM, Yuanfang Chen wrote:
>> The "-l" option was meaningful only if you specified events more than the
>> actual number of counters in the PMU.
>
> So -l is for multiplexing?
>

The "-l" option is no longer supported in perf record/report and multiplexing 
is always enabled by default, if needed. That would be the same even for old 
versions AFAIK, and "-l" option just controlled whether it'd scale or not the 
counter value which is taken from already multiplexed events.


Thanks,
Namhyung

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