From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755496AbbLQASJ (ORCPT ); Wed, 16 Dec 2015 19:18:09 -0500 Received: from mail.kernel.org ([198.145.29.136]:60079 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754830AbbLQASH (ORCPT ); Wed, 16 Dec 2015 19:18:07 -0500 Date: Wed, 16 Dec 2015 21:17:59 -0300 From: Arnaldo Carvalho de Melo To: Namhyung Kim Cc: Ingo Molnar , Peter Zijlstra , Jiri Olsa , LKML , David Ahern , Steven Rostedt , Frederic Weisbecker , Andi Kleen , Wang Nan Subject: Re: [PATCHSET 00/10] perf tools: Support dynamic sort keys for tracepoints (v2) Message-ID: <20151217001759.GE19926@kernel.org> References: <1450193743-4409-1-git-send-email-namhyung@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1450193743-4409-1-git-send-email-namhyung@kernel.org> X-Url: http://acmel.wordpress.com User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Em Wed, Dec 16, 2015 at 12:35:33AM +0900, Namhyung Kim escreveu: > Hello, > > This is an attempt to improve perf to deal with tracepoint events > better. The perf tools can handle tracepoint events but perf report > on them is less useful since they're always sampled in a fixed > location and not provide event specific info. We can use perf script > but I always wishes there's more convenient way to see the result. > > * changes in v2) > - add 'trace' sort key and make it default (Jiri) > - add '--raw-trace' option and '/raw' field modifier (Jiri) > - support event name shortcuts (David) Can you take a look if you can reproduce this? Without callchains it works in all tests I did. [root@zoo ~]# perf record -g -e kmem:kmalloc -a ^C[ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 1.193 MB perf.data (250 samples) ] [root@zoo ~]# perf report perf: Segmentation fault -------- backtrace -------- perf[0x539f1b] /lib64/libc.so.6(+0x34960)[0x7fc8e3752960] perf(pevent_read_number+0x78)[0x542e40] perf(pevent_read_number_field+0x70)[0x542ed3] /root/.traceevent/plugins/plugin_kmem.so(+0x603)[0x7fc8e1a6c603] perf(pevent_event_info+0x96)[0x547597] perf[0x4dce26] perf[0x4e0e89] perf(hist_entry_iter__add+0xee)[0x4e125e] perf[0x4304be] perf[0x4c2db3] perf[0x4c3301] perf[0x4c6089] perf(perf_session__process_events+0x3f1)[0x4c4b91] perf(cmd_report+0x120b)[0x4319cb] perf[0x47c871] perf(main+0x63f)[0x42242f] /lib64/libc.so.6(__libc_start_main+0xf0)[0x7fc8e373dfe0] perf[0x422549] [0x0] [root@zoo ~]# ls -la ~/.traceevent/ total 12 drwxr-xr-x. 3 acme acme 4096 May 4 2015 . drwx------. 61 acme acme 4096 Dec 16 21:12 .. drwxr-xr-x. 2 acme acme 4096 Nov 23 11:15 plugins [root@zoo ~]# ls -la ~/.traceevent lrwxrwxrwx. 1 root root 23 May 4 2015 /root/.traceevent -> /home/acme/.traceevent/ [root@zoo ~]# perf record -e sched:sched_switch -a ^C[ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 1.704 MB perf.data (4967 samples) ] [root@zoo ~]# perf report [root@zoo ~]# perf record -g -e sched:sched_switch -a ^C[ perf record: Woken up 2 times to write data ] [ perf record: Captured and wrote 2.062 MB perf.data (4743 samples) ] [root@zoo ~]# perf report perf: Segmentation fault -------- backtrace -------- perf[0x539f1b] /lib64/libc.so.6(+0x34960)[0x7fecb3223960] perf(pevent_read_number+0x60)[0x542e28] perf(pevent_read_number_field+0x70)[0x542ed3] perf(get_field_val+0x6b)[0x548cd5] perf(pevent_get_field_val+0x6b)[0x548e77] /root/.traceevent/plugins/plugin_sched_switch.so(+0x95b)[0x7fecb194195b] perf(pevent_event_info+0x96)[0x547597] perf[0x4dce26] perf[0x4e0e89] perf(hist_entry_iter__add+0xee)[0x4e125e] perf[0x4304be] perf[0x4c2db3] perf[0x4c3301] perf[0x4c5fdb] perf[0x4c3535] perf(perf_session__process_events+0x3a0)[0x4c4b40] perf(cmd_report+0x120b)[0x4319cb] perf[0x47c871] perf(main+0x63f)[0x42242f] /lib64/libc.so.6(__libc_start_main+0xf0)[0x7fecb320efe0] perf[0x422549] [0x0] [root@zoo ~]#