linux-kernel - Re: Perf record format portability

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Message-ID: <20120517085106.GA1801@m.brq.redhat.com>
Date:	Thu, 17 May 2012 10:51:07 +0200
From:	Jiri Olsa <jolsa@...hat.com>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Dmitry Antipov <dmitry.antipov@...aro.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	Ingo Molnar <mingo@...hat.com>,
	Amit Kucheria <amit.kucheria@...aro.org>,
	linaro-dev@...ts.linaro.org, linux-kernel@...r.kernel.org
Subject: Re: Perf record format portability

On Wed, May 16, 2012 at 03:39:14PM -0400, Steven Rostedt wrote:
> On Wed, 2012-05-16 at 15:32 -0400, Steven Rostedt wrote:
> > On Wed, 2012-05-16 at 19:48 +0200, Jiri Olsa wrote:
> > 
> > > for ppc64(record) vs x86_64(report) I got following report on latest tip:
> > > 
> > > [jolsa@...p-26-214 test]$ ../perf report > report.target
> > > Endianness of raw data not corrected!
> > > Warning:
> > > 718 samples with id not present in the header
> > > Warning:
> > > The perf.data file has no samples!
> > > 
> 
> What does perf script give you. It looks like Frederic took my code for
> this when he ported the original parse-events over to perf. I see the
> setup of these variables in tools/perf/util/trace-event-read.c
> 
> If you run 'perf script' on x86 from a ppc perf.dat file, do you still
> get the same errors?

yes

---
[jolsa@...p-26-214 test]$ ../perf script
Endianness of raw data not corrected!
Warning:
718 samples with id not present in the header
# ========
# captured on: Wed May 16 19:53:13 2012
# hostname : ibm-js22-vios-02-lp1.rhts.eng.bos.redhat.com
# os release : 2.6.32-270.el6.ppc64
# perf version : 2.6.32-270.el6.ppc64.debug
# arch : ppc64
# nrcpus online : 8
# nrcpus avail : 8
# cpudesc : POWER6 (architected), altivec supported
# cpuid : 62,769
# total memory : 6236992 kB
# cmdline : /usr/bin/perf record -a -e sched:sched_switch -e
# sched:sched_process_exit -e sched:sched_process_fork -e
# sched:sched_wakeup -- sleep 10 
# event : name = sched:sched_switch, type = 2, config = 0x22, config1 =
# 0x0, config2 = 0x0, excl_usr = 0, excl_kern = 0, id = { 97, 98, 99,
# 100, 101, 102, 103, 104 }
# event : name = sched:sched_process_exit, type = 2, config = 0x1b,
# config1 = 0x0, config2 = 0x0, excl_usr = 0, excl_kern = 0, id = { 105,
# 106, 107, 108, 109, 110, 111, 112 }
# event : name = sched:sched_process_fork, type = 2, config = 0x1d,
# config1 = 0x0, config2 = 0x0, excl_usr = 0, excl_kern = 0, id = { 113,
# 114, 115, 116, 117, 118, 119, 120 }
# event : name = sched:sched_wakeup, type = 2, config = 0x17, config1 =
# 0x0, config2 = 0x0, excl_usr = 0, excl_kern = 0, id = { 121, 122, 123,
# 124, 125, 126, 127, 128 }
# HEADER_CPU_TOPOLOGY info available, use -I to display
# HEADER_NUMA_TOPOLOGY info available, use -I to display
# ========
#
---

jirka
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