From mboxrd@z Thu Jan  1 00:00:00 1970
From: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Subject: Re: [BUG] perf top -G is broken
Date: Wed, 2 May 2012 13:02:50 -0300
Message-ID: <20120502160250.GB5745@infradead.org>
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To: Namhyung Kim <namhyung.kim@lge.com>
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Em Wed, May 02, 2012 at 11:50:45AM +0900, Namhyung Kim escreveu:
> 
> Hi,
> 
> Some guy reported me that perf top -G is broken with segment fault. I
> can reproduce it on my system easily but the time is vary - few seconds
> to 30 minutes. I ran it with --stdio to get a core file:

Does it help to increase --mmap-pages from its default, 128, to
something like 512 or more?

Also try running with -r 90.

- Arnaldo