From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail202.messagelabs.com (mail202.messagelabs.com [216.82.254.227]) by kanga.kvack.org (Postfix) with SMTP id 6BF8A6B0078 for ; Tue, 24 Nov 2009 06:05:13 -0500 (EST) Message-ID: <4B0BBDBF.6050806@cn.fujitsu.com> Date: Tue, 24 Nov 2009 19:04:31 +0800 From: Li Zefan MIME-Version: 1.0 Subject: Re: [PATCH 0/5] perf kmem: Add more functions and show more statistics References: <4B0B6E44.6090106@cn.fujitsu.com> <20091124090425.GF21991@elte.hu> <4B0BA99D.5020602@cn.fujitsu.com> <20091124100724.GA5570@elte.hu> In-Reply-To: <20091124100724.GA5570@elte.hu> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org To: Ingo Molnar Cc: Pekka Enberg , Eduard - Gabriel Munteanu , Peter Zijlstra , Frederic Weisbecker , LKML , "linux-mm@kvack.org" List-ID: >> Do perf-sched and perf-timechart work on this box? > > yeah: > > aldebaran:~> perf sched record sleep 1 > [ perf record: Woken up 1 times to write data ] > [ perf record: Captured and wrote 0.017 MB perf.data (~758 samples) ] > aldebaran:~> perf trace | tail -5 > distccd-20944 [010] 1792.787376: sched_stat_runtime: comm=distccd pid=20944 runtime=11196 [ns] vruntime=696395420043 [ns] > init-0 [009] 1792.914837: sched_stat_wait: comm=x86_64-linux-gc pid=881 delay=10686 [ns] > init-0 [009] 1792.915082: sched_stat_sleep: comm=events/9 pid=44 delay=2183651362 [ns] > as-889 [013] 1793.008008: sched_stat_runtime: comm=as pid=889 runtime=156807 [ns] vruntime=1553569219042 [ns] > init-0 [004] 1793.154400: sched_stat_wait: comm=events/4 pid=39 delay=12155 [ns] > > aldebaran:~> perf kmem record sleep 1 > [ perf record: Woken up 1 times to write data ] > [ perf record: Captured and wrote 0.078 MB perf.data (~3398 samples) ] > aldebaran:~> perf trace | tail -5 > aldebaran:~> > > the perf.data has mmap and exit events - but no kmem events. > I was using yesterday's -tip tree, and I just updated to the latest -tip, and I found perf tools are not working: # ./perf kmem record sleep 3 ... # ./perf trace perf-1805 [001] 66.239160: kmem_cache_free: ... perf-1806 [000] 66.403561: kmem_cache_alloc: ... swapper-0 [000] 66.420099: kmem_cache_free: ... # ./perf kmem record sleep 3 ... # ./perf trace # ./perf sched record sleep 3 .../ # ./perf trace perf-1825 [000] 103.543014: sched_stat_runtime: ... # ./perf sched record sleep 3 ... # ./perf trace # So I think some new updates on kernel perf_event break. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org