Re: [PATCH 2/7] perf data: Switch to multiple cpu stream files
From: Arnaldo Carvalho de Melo
Date: Mon Apr 20 2015 - 15:59:14 EST
Em Sat, Apr 18, 2015 at 05:50:15PM +0200, Jiri Olsa escreveu:
> From: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
>
> Currently we store the data into single data strea/file. The cpu
> if data is stored within the event sample. The lttng puts the CPU
> number that belongs to the event into the packet context instead
> into the event.
>
> This patch makes sure that the trace produce by perf does look the
> same way. We now use one stream per-CPU. Having it all in one stream
> increased the total size of the resulting file. The test went from
> 416KiB (with perf_cpu event member) to 24MiB due to the required
> (and pointless) flush. With the per-cpu streams the total size went
> up to 588KiB.
>
> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
> Link: http://lkml.kernel.org/n/tip-fco07vxi6yx4m9et2aimm4u0@xxxxxxxxxxxxxx
> Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
With latest babeltrace.git:
[acme@zoo babeltrace]$ git log --oneline | head -1
48d711a204f6 Fix: Missing stdint.h in stream-class.h
But I noticed I have this installed, as well:
[acme@zoo babeltrace]$ rpm -qa | grep babeltr
libbabeltrace-1.2.1-1.fc20.x86_64
[acme@zoo babeltrace]$
But:
[acme@zoo babeltrace]$ ldd ~/bin/perf | grep babeltrace
libbabeltrace-ctf.so.1 => /opt/libbabeltrace/lib/libbabeltrace-ctf.so.1 (0x00007fb52713b000)
libbabeltrace.so.1 => /opt/libbabeltrace/lib/libbabeltrace.so.1 (0x00007fb526889000)
[acme@zoo babeltrace]$
Will try removing the rpm as well...
[acme@zoo linux]$ perf data convert --to-ctf=ctf
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@zoo linux]$
Core was generated by `perf data convert --to-ctf=ctf'.
Program terminated with signal SIGABRT, Aborted.
#0 0x00007f843378a877 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
56 return INLINE_SYSCALL (tgkill, 3, pid, selftid, sig);
Missing separate debuginfos, use: debuginfo-install bzip2-libs-1.0.6-9.fc20.x86_64 libunwind-1.1-3.fc20.x86_64 libuuid-2.24.2-2.fc20.x86_64 nss-softokn-freebl-3.18.0-1.fc20.x86_64 numactl-libs-2.0.9-2.fc20.x86_64 popt-1.16-2.fc20.x86_64 python-libs-2.7.5-15.fc20.x86_64 slang-2.2.4-11.fc20.x86_64 xz-libs-5.1.2-12alpha.fc20.x86_64
(gdb) bt
#0 0x00007f843378a877 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
#1 0x00007f843378bf68 in __GI_abort () at abort.c:89
#2 0x00007f84337837d6 in __assert_fail_base (fmt=0x7f84338d0ce8 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n",
assertion=assertion@entry=0x7f8432b3f510 "byte_order == 1234 || byte_order == 4321", file=file@entry=0x7f8432b3f3ba "event-types.c",
line=line@entry=1855, function=function@entry=0x7f8432b3f540 <__PRETTY_FUNCTION__.12860> "bt_ctf_field_type_set_native_byte_order")
at assert.c:92
#3 0x00007f8433783882 in __GI___assert_fail (assertion=assertion@entry=0x7f8432b3f510 "byte_order == 1234 || byte_order == 4321",
file=file@entry=0x7f8432b3f3ba "event-types.c", line=line@entry=1855,
function=function@entry=0x7f8432b3f540 <__PRETTY_FUNCTION__.12860> "bt_ctf_field_type_set_native_byte_order") at assert.c:101
#4 0x00007f8432b313fa in bt_ctf_field_type_set_native_byte_order (type=<optimized out>, byte_order=<optimized out>) at event-types.c:1855
#5 0x00007f8432b32c09 in bt_ctf_stream_class_freeze (stream_class=0x23a5b50) at stream-class.c:478
#6 0x00007f8432b2ce75 in bt_ctf_event_create (event_class=event_class@entry=0x23aabc0) at event.c:324
#7 0x00000000004e71bd in process_sample_event (tool=0x7ffe2413eaa0, _event=<optimized out>, sample=0x7ffe2413e650, evsel=0x23a9eb0,
machine=<optimized out>) at util/data-convert-bt.c:518
#8 0x00000000004b0b35 in perf_evlist__deliver_sample (machine=0x23a92e0, evsel=0x23a9eb0, sample=0x7ffe2413e650, event=0x7f84360962b0,
tool=0x7ffe2413eaa0, evlist=0x23a94d0) at util/session.c:883
#9 machines__deliver_event (file_offset=<optimized out>, tool=<optimized out>, sample=0x7ffe2413e650, event=<optimized out>,
evlist=<optimized out>, machines=<optimized out>) at util/session.c:920
#10 ordered_events__deliver_event (oe=<optimized out>, event=<optimized out>) at util/session.c:108
#11 0x00000000004b4e54 in __ordered_events__flush (oe=0x23a9410) at util/ordered-events.c:207
#12 ordered_events__flush (oe=oe@entry=0x23a9410, how=how@entry=OE_FLUSH__FINAL) at util/ordered-events.c:271
#13 0x00000000004b3ad8 in __perf_session__process_events (file_size=18224, data_size=<optimized out>, data_offset=<optimized out>, session=0x23a9220)
at util/session.c:1404
#14 perf_session__process_events (session=session@entry=0x23a9220) at util/session.c:1422
#15 0x00000000004e81db in bt_convert__perf2ctf (input=<optimized out>, path=0x7ffe241402ff "ctf", force=<optimized out>)
at util/data-convert-bt.c:995
#16 0x00000000004497c5 in cmd_data_convert (argc=<optimized out>, argv=<optimized out>, prefix=<optimized out>) at builtin-data.c:81
#17 0x0000000000472165 in run_builtin (p=p@entry=0x838640 <commands+576>, argc=argc@entry=3, argv=argv@entry=0x7ffe2413f190) at perf.c:370
#18 0x000000000041e660 in handle_internal_command (argv=0x7ffe2413f190, argc=3) at perf.c:429
#19 run_argv (argv=0x7ffe2413ef10, argcp=0x7ffe2413ef1c) at perf.c:473
#20 main (argc=3, argv=0x7ffe2413f190) at perf.c:588
(gdb)
[acme@zoo linux]$ ls -la ctf
total 60
drwxrwx---. 2 acme acme 4096 Abr 20 11:57 .
drwxrwxr-x. 30 acme acme 20480 Abr 20 16:54 ..
-rw-rw----. 1 acme acme 0 Abr 20 16:54 metadata
-rw-rw----. 1 acme acme 32768 Abr 20 16:49 perf_stream_0
[acme@zoo linux]$ babeltrace ctf
[warning] Ill-shapen or missing "/* CTF x.y" header for text-only metadata.
[warning] Unsupported CTF specification version 32547.6313276. Trying anyway.
[error] at line 1: token "": syntax error, unexpected $end
[error] Error creating AST
[warning] Unable to open trace metadata for path "ctf".
[warning] [Context] Cannot open_trace of format ctf at path ctf.
[warning] [Context] cannot open trace "ctf" from ctf for reading.
[error] Cannot open any trace for reading.
[error] opening trace "ctf" for reading.
[error] none of the specified trace paths could be opened.
[acme@zoo linux]$
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