From: Ryan Johnson <ryan.johnson@cs.utoronto.ca>
To: linux-perf-users@vger.kernel.org
Subject: perf top -z not working?
Date: Wed, 17 Oct 2012 08:26:53 -0400 [thread overview]
Message-ID: <507EA40D.60206@cs.utoronto.ca> (raw)
Hi,
(Please CC me in replies, not a list member)
It seems that `perf top -z' does not behave as advertized, at least not
on the 3.2.0-25 kernel (Ubuntu) that I'm running. The man page states
that it should "zero history across display updates" but the counts
still seem to accumulate (the total samples reported rises
monotonically) and processes still show up in the display long after
they have exited. Pressing `z' or `Z' seems to have no effect, either.
Have I misunderstood this feature, or is this a bug that has perhaps
been fixed in later kernel versions? I haven't been successful searching
for information about it, beyond the man pages and what the perf wiki says.
Thanks,
Ryan
next reply other threads:[~2012-10-17 13:43 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-17 12:26 Ryan Johnson [this message]
2012-10-17 13:49 ` perf top -z not working? Chulmin Kim
2012-10-22 1:46 ` Arnaldo Carvalho de Melo
2012-10-22 11:50 ` Ryan Johnson
2012-10-22 13:12 ` David Ahern
2012-10-22 14:10 ` Ryan Johnson
2012-10-22 14:13 ` Chulmin Kim
2012-10-22 14:15 ` Chulmin Kim
2012-10-22 14:45 ` Arnaldo Carvalho de Melo
2012-10-22 15:01 ` David Ahern
2012-10-22 16:04 ` Ryan Johnson
2012-10-23 6:04 ` Namhyung Kim
2012-10-23 16:10 ` David Ahern
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