<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"> <HTML> <HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"> <META NAME="Generator" CONTENT="MS Exchange Server version 5.5.2653.12"> <TITLE>RE: [Nagios-users] ePN and memory leaks</TITLE> </HEAD> <BODY> Has anyone else done an in-depth investigation of memory leaks in ePN and/or custom checks written for ePN? > -----Original Message----- > From: Stanley Hopcroft [<A HREF="mailto:Stanley.Hopcroft@IPAustralia.Gov.AU">mailto:Stanley.Hopcroft@IPAustralia.Gov.AU</A>] > Sent: Monday, December 30, 2002 10:31 PM > To: atonns@mail.ivillage.com > Cc: nagios-users@lists.sourceforge.net > Subject: Re: [Nagios-users] ePN and memory leaks > > > Are there any suggestions for finding memory leaks in ePN? > (I'm going to be > > looking at Apache::Leak and Devel::Leak, but there might be > other debug > > options in nagios I'm not aware of). > > > > Not that I am aware of. It sounds like you are on the right track > though. Well, I've run several tests with both Apache::Leak and Devel::Leak and have found that it's not my code that's leaking, but either p1.pl or mini_epn. The number of SVs before and after executing my code stays the same (or decreases!). BUT the number of SVs between invocations when called by mini_epn increases. Below is an example where I use Devel::Leak and have changed the output of my service check to be the ENTER and LEAVE values returned by NoteSV and CheckSV (note that the first invocation increases dramatically because of DynaLoaded modules) $ ./mini_epn 2>/dev/null Enter file name: check_remote_interfaces-leak_test embedded perl plugin output was -12820724,ENTER: 32488 LEAVE:32674 Enter file name: check_remote_interfaces-leak_test embedded perl plugin output was -12820724,ENTER: 32686 LEAVE:32686 Enter file name: check_remote_interfaces-leak_test embedded perl plugin output was -12820724,ENTER: 32694 LEAVE:32693 Enter file name: check_remote_interfaces-leak_test embedded perl plugin output was -12820724,ENTER: 32701 LEAVE:32700 Enter file name: check_remote_interfaces-leak_test embedded perl plugin output was -12820724,ENTER: 32708 LEAVE:32707 > You could also run any suggestions past the ePN author (noted in the > source). I couldn't find this person's info (is it not Ethan Galstad?). I don't want to bother who are no longer involved in the project. -- "Computer science is as much about computers as astronomy is about telescopes" -- Edsger Dijkstra --------------------------------------------------------- Anthony Tonns, UNIX Administrator - atonns@mail.ivillage.com </BODY> </HTML>