Hi all, Putting some feelers out for ideas. I've got apache running using reverse proxy as a load balancer for over 60 different web applications on various servers. Every now and then it'll have a thread that starts to spin, seeming to just frantically do nothing, but Apache keeps on working hosting content successfully. It happens under both MPM Worker and Prefork, and only on the front server, never one of the applications behind it.
Isolating the problem is slowly beginning to drive me crazy :) Stracing the process doesn't show anything happening at all. Nothing obvious is happening in the logs. I tried adding a seconds count for responses to see whether anything was routinely slow around the time or leading up to it that might provide hints, to no avail, and tried logging the PID, but again no joy. As I understand it Apache doesn't log until the response has been sent successfully so that's probably not all that surprising. About the only other thing I can think to do at the moment is enable mod_forensics and get it to log requests on receipt as well as at the end and look for in requests without a matching out. Anyone have any suggestions on how else I might track down what is causing this? Paul _______________________________________________ Tech mailing list [email protected] https://lists.lopsa.org/cgi-bin/mailman/listinfo/tech This list provided by the League of Professional System Administrators http://lopsa.org/
