<quote who="[EMAIL PROTECTED]"> > Context is massive memory leak with ePN. Leak goes when ePN is > removed.
I have a feeling it is more with the way plugin caching works. > There should be added another major caveat to this: depending on > your plugins you may have a bigger or smaller leak, however leak > it will. I have gone through all my perl based plugins and changed "use vars" to "my". (Recommended from the embedded perl documentation.) > For me, I wouldn't consider Nagios without ePN since I code most > of my plugins in Perl and the advantages for me (and this > installation) outweigh the leak. Same here. Especially loading the SNMP MIBs once in Nagios. > > Finally about the meaning of the configure switches for ePN. > > 1 --enable-embedded-perl > > This builds Perl into the Nagios executable and at the least > means that your system does __not__ fork a new process to run > Perl plugins. Instead, Perl is parsed and run by direct > calls to the Nagios binary. > > So, setting this switch saves a context switch. Also you remove the interpreter initialization load. > 2 --with-perl-cache > > If in addition, this switch is set, the Perl plugin is compiled > only once (otherwise, each time Nagios goes to run a Perl plugin, > it recompiles it). The resultant Perl op code tree remains in > memory. > > Unfortunately, for reasons that are not clear to me, this is the > source of the leak. The perl code path that runs in the master Nagios process (after all pluggins have been compiled successfully and you remove argument caching) is: sub eval_file { my ($filename, $delete, undef, $plugin_args) = @_ ; my $mtime = -M $filename ; if ( exists($Cache{$filename}) && $Cache{$filename}[MTIME] && ($Cache{$filename}[MTIME] >= $mtime)) { if ( $Cache{$filename}[PLUGIN_ERROR] ) { ... } else { return $Cache{$filename}[PLUGIN_HNDLR]; }; }; }; I am not sure where the leak is, unless it is in the interpreter itself. With all the tuning my master process gains about 4MBytes a day. -- And, did Galoka think the Ulus were too ugly to save? -Centauri ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Nagios-users mailing list Nagios-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nagios-users ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null