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From: Gene Heskett <gheskett@wdtv.com>
To: Ken Moffat <zarniwhoop@ntlworld.com>
Subject: Re: 3.13.5 : rm -rf running forever, one cpu at approx 100%
Date: Wed, 26 Feb 2014 23:19:29 -0500
Cc: Mike Galbraith <bitbucket@online.de>, linux-kernel@vger.kernel.org
References: <20140227005246.GB10367@milliways> <1393471595.5519.22.camel@marge.simpson.net> <20140227034535.GC14346@milliways>
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On Wednesday 26 February 2014, Ken Moffat wrote:
>On Thu, Feb 27, 2014 at 04:26:35AM +0100, Mike Galbraith wrote:
>> I would start with strace to see if a task is looping in userspace,
>> then move on to perf top -g -p <pid> (or perf record/report) to peek
>> at what it's up to in the kernel.  Once you have the where,
>> trace_printk() is the best thing since sliced bread (which ranks just
>> below printk()).
>> 
>> -Mike
>
> Thanks.  I'll need to build perf.
>
>ĸen
I probably will too, but I don't have a huge amount of tracing turned on in 
this kernel.  We'll see what happens tonight & go from there.
FWIW, about all I see in htop is the command line that launched it.


Cheers, Gene
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>

NOTICE: Will pay 100 USD for an HP-4815A defective but
complete probe assembly.

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