From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stefan Hajnoczi <stefanha@gmail.com>
Subject: Re: How to diagnose memory leak in kvm-qemu-0.14.0?
Date: Thu, 19 May 2011 09:50:51 +0100
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To: Steve Kemp <steve@bytemark.co.uk>
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On Thu, May 19, 2011 at 9:40 AM, Stefan Hajnoczi <stefanha@gmail.com> w=
rote:
> On Wed, May 18, 2011 at 5:44 PM, Steve Kemp <steve@bytemark.co.uk> wr=
ote:
> If you have SystemTap installed you may wish to use the "dtrace"
> backend instead of "simple". =A0You can then use SystemTap scripts on
> the probes. =A0SystemTap is more powerful, it should allow you to
> extract call stacks when probes are fired but I'm not experienced wit=
h
> it.

=46orgot to add that the __builtin_return_address() gcc extension can b=
e
used to collect return addresses even with the simple trace backend:
http://gcc.gnu.org/onlinedocs/gcc-4.4.2/gcc/Return-Address.html#index-g=
_t_005f_005fbuiltin_005freturn_005faddress-2431

I've used it in the past as a poor man's stack trace when tracking
down memory leaks.

Stefan