From mboxrd@z Thu Jan  1 00:00:00 1970
From: Namhyung Kim <namhyung@kernel.org>
Subject: Re: Adding a recording delay interferes with symbols/call-stack
Date: Thu, 2 Nov 2017 16:07:43 +0900
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To: Bram Stolk <b.stolk@gmail.com>
Cc: Arnaldo Carvalho de Melo <arnaldo.melo@gmail.com>, linux-perf-users@vger.kernel.org, kernel-team@lge.com

On Thu, Nov 02, 2017 at 12:01:24AM -0700, Bram Stolk wrote:
> Thanks Namhyung,
> 
> I tried the patch, but still no app symbols:
> 
> perf record --delay=1000 --freq 2000 --call-graph dwarf ./bench
> ...
> [ perf record: Woken up 2 times to write data ]
> [ perf record: Captured and wrote 0.347 MB perf.data (41 samples) ]
> 
> perf report -g 'graph,0.25,callee'

Hmmm... could you please show me whether MMAP2 events are recorded?

  $ perf report -D | tail

Thanks,
Namhyung