Agreed. But if I can use field() and get the same results without having to build the complex RegEx I'm not going to complain.
-- James -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Pavel Levshin Sent: Friday, October 25, 2013 6:52 AM To: [email protected] Subject: Re: [rsyslog] Performance question. This regexp could be improved, possible severely. Now, it makes use of greedy quantifiers, and it is bad for it's performance Unsure, what are you trying to extract here. ^.*[\\^][0-9.-]+\\|[A-Z]+\\|[a-zA-Z0-9.-]+\\|[a-zA-Z0-9._-]+\\|[a-zA-Z0-9]*\\|([a-zA-Z0-9._-]*)[~]*[a-zA-Z0-9._-]*\\|.* -- Pavel Levshin 25.10.2013 15:02, Boylan, James: > Quick Question. Which is more impactful to performance? > > set $!session = re_extract($msg, > '^.*[\\^][0-9.-]+\\|[A-Z]+\\|[a-zA-Z0-9.-]+\\|[a-zA-Z0-9._-]+\\|[a-zA- > Z0-9]*\\|([a-zA-Z0-9._-]*)[~]*[a-zA-Z0-9._-]*\\|.*', 0, 1, 'N/A'); > > or > > set $!session = field(field(field($msg, 94, 2), 124, 6), 126, 1); > > I'm going to do some testing, but if I can get a quick response here it could > save me some time. I would expect the re_extract function to be, but I'm not > familiar with how the code for field works so I can't make that assumption. > > Thanks! > > -- James > _______________________________________________ > rsyslog mailing list > http://lists.adiscon.net/mailman/listinfo/rsyslog > http://www.rsyslog.com/professional-services/ > What's up with rsyslog? Follow https://twitter.com/rgerhards NOTE > WELL: This is a PUBLIC mailing list, posts are ARCHIVED by a myriad of sites > beyond our control. PLEASE UNSUBSCRIBE and DO NOT POST if you DON'T LIKE THAT. _______________________________________________ rsyslog mailing list http://lists.adiscon.net/mailman/listinfo/rsyslog http://www.rsyslog.com/professional-services/ What's up with rsyslog? Follow https://twitter.com/rgerhards NOTE WELL: This is a PUBLIC mailing list, posts are ARCHIVED by a myriad of sites beyond our control. PLEASE UNSUBSCRIBE and DO NOT POST if you DON'T LIKE THAT. _______________________________________________ rsyslog mailing list http://lists.adiscon.net/mailman/listinfo/rsyslog http://www.rsyslog.com/professional-services/ What's up with rsyslog? Follow https://twitter.com/rgerhards NOTE WELL: This is a PUBLIC mailing list, posts are ARCHIVED by a myriad of sites beyond our control. PLEASE UNSUBSCRIBE and DO NOT POST if you DON'T LIKE THAT.
