From: "Simon Kämpflein" <s.kaempflein@gmx.de>
To: linux-kernel@vger.kernel.org
Subject: perf counters: problem with perf record
Date: Sun, 15 Nov 2009 03:14:03 +1000 [thread overview]
Message-ID: <4AFEE55B.3000906@gmx.de> (raw)
Hello,
I have a problem with the new kernel perf tools in kernel 2.6.31.6 (very
nice tools by the way). I like to monitor the cache-misses of a program.
"perf stat -e cache-misses program" works without problems, but I can't
get "perf record -e cache-misses program" working (even running as root
and CONFIG_PERF_COUNTERS=y):
Error: perfcounter syscall returned with -1 (Operation not supported)
Fatal: No CONFIG_PERF_COUNTERS=y kernel support configured?
strace of "perf stat":
SYS_336(0x8508da0, 0x1074, 0xffffffff, 0xffffffff, 0) = 3
strace of "perf record":
SYS_336(0x8508da0, 0xf85, 0xffffffff, 0xffffffff, 0) = -1 EOPNOTSUPP
(Operation not supported)
My CPU is a "Intel(R) Pentium(R) M processor 1.80GHz":
[ 0.004337] p6 PMU driver.
[ 0.004343] ... version: 0
[ 0.004345] ... bit width: 32
[ 0.004347] ... generic counters: 2
[ 0.004349] ... value mask: 00000000ffffffff
[ 0.004351] ... max period: 000000007fffffff
[ 0.004353] ... fixed-purpose counters: 0
[ 0.004355] ... counter mask: 0000000000000003
Best regards,
Simon
next reply other threads:[~2009-11-14 16:14 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-14 17:14 Simon Kämpflein [this message]
2009-11-14 19:46 ` perf counters: problem with perf record Peter Zijlstra
2009-11-15 10:06 ` Simon Kämpflein
2009-11-15 10:34 ` Ingo Molnar
2009-11-16 5:25 ` Simon Kämpflein
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4AFEE55B.3000906@gmx.de \
--to=s.kaempflein@gmx.de \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.