From: Arnaldo Carvalho de Melo <acme@infradead.org>
To: Stephane Eranian <eranian@google.com>
Cc: linux-kernel@vger.kernel.org,
Frederic Weisbecker <fweisbec@gmail.com>,
Han Pingtian <phan@redhat.com>, Mike Galbraith <efault@gmx.de>,
Paul Mackerras <paulus@samba.org>,
Peter Zijlstra <peterz@infradead.org>,
Tom Zanussi <tzanussi@gmail.com>,
Thomas Gleixner <tglx@linutronix.de>,
mingo@elte.hu
Subject: Re: [GIT PULL||RFC 00/11] perf library and regression testing improvements
Date: Tue, 4 Jan 2011 12:34:00 -0200 [thread overview]
Message-ID: <20110104143359.GE19989@ghostprotocols.net> (raw)
In-Reply-To: <AANLkTi=uYpdirz_iJUNJoGcsG9_j0Uj+1H_O9bGQfUe+@mail.gmail.com>
Em Tue, Jan 04, 2011 at 03:29:59PM +0100, Stephane Eranian escreveu:
> Indeed counts is bogus:
>
> ./perf stat -i -e cycles date
>
> evt:0x7d4250 counts=0x7d4450 <-- from perf_evsel__alloc_counts()
>
> Tue Jan 4 15:28:36 CET 2011
>
> counter=0x7d4250 counts=(nil) <-- from read_counter_aggr()
>
> Segmentation fault
Strange I'm not reproducing it here (printf just on read_counter_aggr):
[acme@felicio linux]$ perf stat date
Tue Jan 4 12:32:15 BRST 2011
0x2586820: 0x2586948
0x2586790: 0x25869f8
0x2586700: 0x2586aa8
0x2586670: 0x2586b58
0x25865e0: 0x2586c08
0x2586550: 0x2586cb8
0x25864c0: 0x2586d68
0x2586430: 0x2586e18
0x25863a0: 0x2586ec8
0x2586310: 0x2586f78
Performance counter stats for 'date':
7,512 cache-misses # 13.010 M/sec
342,645 cache-references # 593.445 M/sec
14,884 branch-misses # 8.241 %
180,611 branches # 312.810 M/sec
925,986 instructions # 0.000 IPC (scaled from 49.88%)
<not counted> cycles
201 page-faults # 0.348 M/sec
0 CPU-migrations # 0.000 M/sec
0 context-switches # 0.000 M/sec
0.577383 task-clock-msecs # 0.588 CPUs
0.000982448 seconds time elapsed
[acme@felicio linux]$
[acme@felicio linux]$ gcc -v
Using built-in specs.
COLLECT_GCC=/usr/bin/gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-redhat-linux/4.5.1/lto-wrapper
Target: x86_64-redhat-linux
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-bootstrap --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-linker-build-id --enable-languages=c,c++,objc,obj-c++,java,fortran,ada,lto --enable-plugin --enable-java-awt=gtk --disable-dssi --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-1.5.0.0/jre --enable-libgcj-multifile --enable-java-maintainer-mode --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --disable-libjava-multilib --with-ppl --with-cloog --with-tune=generic --with-arch_32=i686 --build=x86_64-redhat-linux
Thread model: posix
gcc version 4.5.1 20100924 (Red Hat 4.5.1-4) (GCC)
[acme@felicio linux]$
[acme@felicio linux]$ uname -a
Linux felicio.ghostprotocols.net 2.6.35.10-72.fc14.x86_64 #1 SMP Mon Dec 20 21:14:22 UTC 2010 x86_64 x86_64 x86_64 GNU/Linux
[acme@felicio linux]$
[acme@felicio linux]$ cat /etc/fedora-release
Fedora release 14 (Laughlin)
[acme@felicio linux]$
- Arnaldo
next prev parent reply other threads:[~2011-01-04 14:34 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-04 3:48 [GIT PULL||RFC 00/11] perf library and regression testing improvements Arnaldo Carvalho de Melo
2011-01-04 3:48 ` [PATCH 01/11] perf tools: Introduce event selectors Arnaldo Carvalho de Melo
2011-01-04 3:48 ` [PATCH 02/11] perf evsel: Adopt MATCH_EVENT macro from 'stat' Arnaldo Carvalho de Melo
2011-01-04 3:48 ` [PATCH 03/11] perf util: Move do_read from session to util Arnaldo Carvalho de Melo
2011-01-04 3:48 ` [PATCH 04/11] perf evsel: Delete the event selectors at exit Arnaldo Carvalho de Melo
2011-01-04 3:48 ` [PATCH 05/11] perf evsel: Steal the counter reading routines from stat Arnaldo Carvalho de Melo
2011-01-04 3:48 ` [PATCH 06/11] perf evsel: Introduce per cpu and per thread open helpers Arnaldo Carvalho de Melo
2011-01-04 3:48 ` [PATCH 07/11] perf tools: Refactor cpumap to hold nr and the map Arnaldo Carvalho de Melo
2011-01-04 3:48 ` [PATCH 08/11] perf tools: Refactor all_tids " Arnaldo Carvalho de Melo
2011-01-04 3:48 ` [PATCH 09/11] perf evsel: Use {cpu,thread}_map to shorten list of parameters Arnaldo Carvalho de Melo
2011-01-04 3:48 ` [PATCH 10/11] perf evsel: Auto allocate resources needed for some methods Arnaldo Carvalho de Melo
2011-01-04 3:48 ` [PATCH 11/11] perf test: Add test for counting open syscalls Arnaldo Carvalho de Melo
2011-01-04 7:16 ` [GIT PULL||RFC 00/11] perf library and regression testing improvements Ingo Molnar
2011-01-04 13:59 ` Stephane Eranian
2011-01-04 14:03 ` Arnaldo Carvalho de Melo
2011-01-04 14:09 ` Stephane Eranian
2011-01-04 14:19 ` Arnaldo Carvalho de Melo
2011-01-04 14:27 ` Arnaldo Carvalho de Melo
2011-01-04 14:33 ` Stephane Eranian
2011-01-04 14:36 ` Arnaldo Carvalho de Melo
2011-01-04 14:46 ` Stephane Eranian
2011-01-04 14:59 ` Stephane Eranian
2011-01-04 15:10 ` Stephane Eranian
2011-01-04 15:24 ` Arnaldo Carvalho de Melo
2011-01-04 15:30 ` Stephane Eranian
2011-01-04 15:30 ` Stephane Eranian
2011-01-04 15:30 ` Arnaldo Carvalho de Melo
2011-01-04 14:29 ` Stephane Eranian
2011-01-04 14:34 ` Arnaldo Carvalho de Melo [this message]
2011-01-04 14:12 ` Arnaldo Carvalho de Melo
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