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From: Namhyung Kim <namhyung.kim@lge.com>
To: Yuanfang Chen <cyfmxc@gmail.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: perf record: can I specify multiple events and use different sample-after value
Date: Thu, 23 Feb 2012 16:40:40 +0900	[thread overview]
Message-ID: <4F45ED78.2010007@lge.com> (raw)
In-Reply-To: <CAJh9x3psvYArTQOBQa-TVBsW16qRTPJp+0L8hYJQTK7EJYy1tQ@mail.gmail.com>

2012-02-23 3:57 AM, Yuanfang Chen wrote:
> On Wed, Feb 22, 2012 at 1:01 AM, Namhyung Kim <namhyung.kim@lge.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

  reply	other threads:[~2012-02-23  7:40 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-02-22  1:59 perf record: can I specify multiple events and use different sample-after value Yuanfang Chen
2012-02-22  6:01 ` Namhyung Kim
2012-02-22 11:40   ` Namhyung Kim
2012-02-22 19:03     ` Yuanfang Chen
2012-02-23  7:24       ` Namhyung Kim
     [not found]         ` <CAJh9x3o7HLGBWrwBaGgxXS-C9noQbKwh5BP_PAHomOOS6x9SYw@mail.gmail.com>
2012-02-23 18:52           ` Yuanfang Chen
2012-02-23 19:08             ` David Ahern
2012-02-24 22:41               ` Yuanfang Chen
2012-02-27  3:23                 ` David Ahern
     [not found]                   ` <CAJh9x3oO+-8Bc4UONG6RTmSeVFcuNHTKH5m2KsizaubmSojYmw@mail.gmail.com>
2012-02-27 13:58                     ` Yuanfang Chen
2012-02-27 14:42                       ` David Ahern
     [not found]                         ` <CAJh9x3o3M+PWW8k6Ns51pQaMjEtWDmD3s8P0P_6_jro5zh66bA@mail.gmail.com>
2012-02-27 15:05                           ` Fwd: " Yuanfang Chen
2012-02-22 18:57   ` Yuanfang Chen
2012-02-23  7:40     ` Namhyung Kim [this message]
2012-02-23 18:57       ` Yuanfang Chen

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