<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"> <HTML> <HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"> <META NAME="Generator" CONTENT="MS Exchange Server version 5.5.2653.12"> <TITLE>Locking problems?: Nagios 1.1 on Redhat Enterprise ES 2.1</TITLE> </HEAD> <BODY> I've recently built the latest nagios for deployment on Redhat Enterprise ES 2.1 and our testing has shown two serious problems: 1) a simple-to-fix html rendering problem 2) a perplexing lock-contention issue HTML rendering problem The first was easy to fix. There seems to be a problem with with the html generation in "tac.cgi" where a few lines are incorrectly commented out using (/* */) which breaks the html. . You can easily take out those comment lines by deleting lines 1223 and 1226 (/* and */) from tac.cgi - removing those fixed the broken HTML for us. Onto the more serious problem. . . Lock Contention? After running the daemon for a while it looks like we get a number process stuck in some wait loop: nagios 22304 1 0 16:01 ? 00:00:00 /usr/bin/nagios -d /etc/nagios/n nagios 22311 1 0 16:01 ? 00:00:00 /usr/bin/nagios -d /etc/nagios/n nagios 22315 1 0 16:01 ? 00:00:00 /usr/bin/nagios -d /etc/nagios/n [etc. etc. into the hundreds over time] Doing an strace of one of these processes, I see that ease of the processes is hanging on a write: strace -p 22075 write(6, "<hostname-deleted-for-security-purposes>\0\0\0"..., 504 (Of course the "hostname deleted" is really one of our hostnames) It seems that write contention is causing terrific problems for us and will mean that we can't roll out this version. . . It would be very hard to blame the hardware for this. . . the disk is very fast and we are using ext3 (both of which are 'better' than our old test machine running 1.0 which didn't have these issues). . . Is anyone aware of a quick fix for this? Is anyone else seeing this process build-up? Thanks in advance, Keith </BODY> </HTML>