linux-kernel - Re: [PATCH 06/11] perf data: Switch to multiple cpu stream files

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Message-ID: <20150312191722.GA2301@redhat.com>
Date:	Thu, 12 Mar 2015 16:17:22 -0300
From:	Arnaldo Carvalho de Melo <acme@...hat.com>
To:	Wang Nan <wangnan0@...wei.com>
Cc:	Jiri Olsa <jolsa@...hat.com>, Jiri Olsa <jolsa@...nel.org>,
	linux-kernel@...r.kernel.org,
	Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
	David Ahern <dsahern@...il.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Jeremie Galarneau <jgalar@...icios.com>,
	Namhyung Kim <namhyung@...il.com>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Tom Zanussi <tzanussi@...il.com>, Li Zefan <lizefan@...wei.com>
Subject: Re: [PATCH 06/11] perf data: Switch to multiple cpu stream files

Em Thu, Mar 12, 2015 at 09:40:09PM +0800, Wang Nan escreveu:
> On 2015/3/12 20:34, Jiri Olsa wrote:
> > On Thu, Mar 12, 2015 at 07:37:02PM +0800, Wang Nan wrote:
> >> Hi Jiri,
> >>
> >> Have you noticed that this patch causes a endianess problem?
> >>
> >> Without this patch:
> >>
> >> $ perf  data convert --to-ctf ./out.ctf
> >> [ perf data convert: Converted 'perf.data' into CTF data './out.ctf' ]
> >> [ perf data convert: Converted and wrote 0.000 MB (11 samples) ]
> >>
> >> With this patch:
> >>
> >> $ perf  data convert --to-ctf ./out.ctf
> >> perf: event-types.c:1855: bt_ctf_field_type_set_native_byte_order: Assertion `byte_order == 1234 || byte_order == 4321' failed.
> >> Aborted
> >>
> >> I'll look into this problem if you haven't solved it yet. Please let me know if you have already
> >> have some solutions.
> > 
> > hum, never seen this.. any other details?
> 
> 
> 
> My perf is -tip tree (commit 4b52a8d), with patch 'perf data: Add tracepoint events fields CTF conversion support'
> applied. Babeltrace is fresh new git clone (commit 48d711a).
> 
> you moved perf.data
> > through different endian server or something like that?
> > 
> 
> Never.

Just reproduced this:

[acme@...andy linux]$ perf data convert --to-ctf=./ctf-data/
perf: event-types.c:1855: bt_ctf_field_type_set_native_byte_order:
Assertion `byte_order == 1234 || byte_order == 4321' failed.
Aborted (core dumped)
[acme@...andy linux]$


perf: event-types.c:1855: bt_ctf_field_type_set_native_byte_order: Assertion `byte_order == 1234 || byte_order == 4321' failed.

Program received signal SIGABRT, Aborted.
0x00007ffff5b345d7 in raise () from /lib64/libc.so.6
Missing separate debuginfos, use: debuginfo-install audit-libs-2.4.1-5.el7.x86_64 bzip2-libs-1.0.6-12.el7.x86_64 elfutils-libelf-0.160-1.el7.x86_64 elfutils-libs-0.160-1.el7.x86_64 glib2-2.40.0-4.el7.x86_64 glibc-2.17-78.el7.x86_64 libgcc-4.8.3-9.el7.x86_64 libuuid-2.23.2-21.el7.x86_64 nss-softokn-freebl-3.16.2.3-9.el7.x86_64 numactl-libs-2.0.9-4.el7.x86_64 perl-libs-5.16.3-285.el7.x86_64 popt-1.13-16.el7.x86_64 python-libs-2.7.5-16.el7.x86_64 slang-2.2.4-11.el7.x86_64 xz-libs-5.1.2-9alpha.el7.x86_64 zlib-1.2.7-13.el7.x86_64
(gdb) bt
#0  0x00007ffff5b345d7 in raise () from /lib64/libc.so.6
#1  0x00007ffff5b35cc8 in abort () from /lib64/libc.so.6
#2  0x00007ffff5b2d546 in __assert_fail_base () from /lib64/libc.so.6
#3  0x00007ffff5b2d5f2 in __assert_fail () from /lib64/libc.so.6
#4  0x00007ffff510034a in bt_ctf_field_type_set_native_byte_order (type=<optimized out>, byte_order=<optimized out>) at event-types.c:1855
#5  0x00007ffff5101b59 in bt_ctf_stream_class_freeze (stream_class=0x8acc20) at stream-class.c:478
#6  0x00007ffff50fbdc5 in bt_ctf_event_create (event_class=event_class@...ry=0x133d590) at event.c:324
#7  0x00000000004e158d in process_sample_event (tool=0x7fffffffdc40, _event=<optimized out>, sample=0x7fffffffd840, evsel=0x8b1040, machine=<optimized out>) at util/data-convert-bt.c:518
#8  0x00000000004b011d in __ordered_events__flush (oe=oe@...ry=0x8b0210) at util/ordered-events.c:214
#9  0x00000000004b043a in ordered_events__flush (oe=oe@...ry=0x8b0210, how=how@...ry=OE_FLUSH__FINAL) at util/ordered-events.c:279
#10 0x00000000004aee18 in __perf_session__process_events (file_size=139704, data_size=<optimized out>, data_offset=<optimized out>, session=0x8b0020) at util/session.c:1394
#11 perf_session__process_events (session=session@...ry=0x8b0020) at util/session.c:1412
#12 0x00000000004e270e in bt_convert__perf2ctf (input=<optimized out>, path=0x7fffffffe59d "./ctf-data/") at util/data-convert-bt.c:992
#13 0x00000000004479cf in cmd_data_convert (argc=<optimized out>, argv=<optimized out>, prefix=<optimized out>) at builtin-data.c:77
#14 0x000000000046f365 in run_builtin (p=p@...ry=0x8345a0 <commands+576>, argc=argc@...ry=3, argv=argv@...ry=0x7fffffffe2d0) at perf.c:370
#15 0x000000000041def0 in handle_internal_command (argv=0x7fffffffe2d0, argc=3) at perf.c:429
#16 run_argv (argv=0x7fffffffe050, argcp=0x7fffffffe05c) at perf.c:473
#17 main (argc=3, argv=0x7fffffffe2d0) at perf.c:588
(gdb) 

Stopping at this to process other patches, will be back to this after reducing the queue,

- Arnaldo
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