From: David Ahern <daahern@cisco.com>
To: Arun Sharma <asharma@fb.com>
Cc: linux-perf-users@vger.kernel.org
Subject: Re: perf script and raw events?
Date: Tue, 22 Mar 2011 17:17:34 -0600 [thread overview]
Message-ID: <4D892E0E.3010505@cisco.com> (raw)
In-Reply-To: <20110322224116.GA3794@dev1756.snc6.facebook.com>
On 03/22/11 16:41, Arun Sharma wrote:
> David,
>
> # perf record -agR -e cycles -- sleep 1
> # perf script
>
> gives me nice list of stack traces. However if I use
> a raw event such as:
>
> # perf record -agR -e r53003c -- sleep 1
> # perf script
Works fine for me (with your raw patch for perf-script):
# /tmp/build-perf/perf record -agR -e r53003c -- sleep 1
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.147 MB perf.data (~6438 samples) ]
# /tmp/build-perf/perf script
perf 27684 [000] 180983.511378: raw 0x53003c:
ffffffff810d696b put_mems_allowed ([kernel.kallsyms])
ffffffff810cbfa9 perf_mmap_alloc_page ([kernel.kallsyms])
ffffffff810ccd13 perf_mmap ([kernel.kallsyms])
ffffffff810f1772 mmap_region ([kernel.kallsyms])
ffffffff810f1c02 do_mmap_pgoff ([kernel.kallsyms])
...
What is that raw event? Where do you find the encodings for raw events?
David
>
> I get no traces and perf script immediately exits. Do you know why?
>
> -Arun
next parent reply other threads:[~2011-03-22 23:19 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20110322224116.GA3794@dev1756.snc6.facebook.com>
2011-03-22 23:17 ` David Ahern [this message]
2011-03-23 0:44 ` perf script and raw events? Lin Ming
2011-03-23 1:25 ` 陳韋任
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