[syslog-ng] Possible memleak in 3.3 HEAD

[Jakub Jankowski]

On 2011-10-09, Jakub Jankowski wrote:
> On 2011-10-09, Balazs Scheidler wrote:
>> On Wed, 2011-10-05 at 01:44 +0200, Jakub Jankowski wrote:
>>> On Mon, 3 Oct 2011 14:34:13 +0200 (CEST), Jakub Jankowski wrote:
>>>>
>>> I think I spoke too soon. :-/
>>> See attached cacti graph. This is basically an output of
>>> awk '/VmRSS:/ { $print $2*1024 }'  /proc/$(cat /var/run/syslog-ng.pid)/status
>>> on git head ("3.3.1" ATM). There must be something else going on; any hints
>>> on how to diagnose this?
>> It definitely seems to be a leak of some kind. If at all possible,
>> running it for some time under valgrind like you did previously would be
>> tremendous.
> I've run half my "live" traffic for approx. 5 minutes through another
> node, with syslog-ng 3.3.1 running under valgrind. Log available at:
> http://toxcorp.com/stuff/syslog-ng-leak/s3.3.1-prod-half-5min.log
> Does it ring any bells (it doesn't for me). Should I test it longer?

I've let it run ~83 minutes this time. No substantial changes in valgrind 
output: http://toxcorp.com/stuff/syslog-ng-leak/s3.3.1-prod-half-83min.log
What baffles me is the number of errors related to "Syscall param 
epoll_ctl(event) points to uninitialised byte(s)".
Anything else looks interesting?

During this run, VmRSS kept rising, from:
Sun Oct  9 21:44:51 CEST 2011; VmRSS:	    3804 kB
Sun Oct  9 21:44:52 CEST 2011; VmRSS:	    3816 kB
Sun Oct  9 21:44:53 CEST 2011; VmRSS:	    3820 kB
Sun Oct  9 21:44:54 CEST 2011; VmRSS:	    3844 kB
(...)
to:
Sun Oct  9 23:07:37 CEST 2011; VmRSS:	  444760 kB
Sun Oct  9 23:07:38 CEST 2011; VmRSS:	  444764 kB
Sun Oct  9 23:07:39 CEST 2011; VmRSS:	  444764 kB
Sun Oct  9 23:07:40 CEST 2011; VmRSS:	  444880 kB
Sun Oct  9 23:07:41 CEST 2011; VmRSS:	  444896 kB
Sun Oct  9 23:07:42 CEST 2011; VmRSS:	  444896 kB
Sun Oct  9 23:07:43 CEST 2011; VmRSS:	  444896 kB
Sun Oct  9 23:07:44 CEST 2011; VmRSS:	  445332 kB


HTH

-- 
Jakub Jankowski|shasta at toxcorp.com|http://toxcorp.com/
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