Re: Strange memory problems / white screens

[Peter Petersson]

Ian Hunter wrote: This is Geronimo 1.1.1 running on Window (!!!) JDK 1.5.0_11 – there *was* Apache running mod_jk but I took it out of the loop using ProxyPass/ProxyPassReverse.  There are a small handful of apps (one EAR, maybe 3 WARs) on the server. Okey having that cleared up I suspect the problem to be with some of the deployed apps G 1.1.1 is in my opinion quite stable and I haven't heard about any problems with your version of (sun:s) JDK. Some multi threaded configurations of Apache with older versions of mod_jk (check the mod_jk log for connection losses) is known to cause problems leading to memory leaks and problems like the one you describe but if you still have this problem it is probably not be the case.   We’re starting to monitor memory usage more closely, but after the problem occurs, we can’t see memory usage – we get that “Not Yet Available” message. I would try Kevan:s suggestion and also if you have the equivalent to unix "tail -f geronimo.log" ("live" logging) in windows it may help in narrowing the offender. regards   Peter Petersson   From: Peter Petersson [mailto:[EMAIL PROTECTED]] Sent: Thursday, July 19, 2007 11:15 AM To: user@geronimo.apache.org Subject: Re: Strange memory problems / white screens   Someone is probably going to as you this so I might as well ;) What version of Geronimo are you running ? What jdk version? Is there a Apache server involved via mod_jk ? Is it one G deployed application in particular that you notice the problem in? Is there other G deployed apps?   At my work we run a G v1.1.1 server and have several Geronimo deployed applications with occasionally somewhat heavy load without any memory leaks in G (months of uptime) so if this is the version you are using I would start looking at the deployed applications memory handling. Is there a steady increase of memory usage?  you can look at the Information page to keep track at it. If this is the case some of your deployed applications may leak memory as the garbage collector cant release some resources (like open database connections holding on to it), tailing good logging output could help locating the problem. regards    Peter Petersson   Ian Hunter wrote: We’ve noticed a problem where intermittently Geronimo starts failing to respond to web requests (browser symptom is a blank white screen) – when this starts happening, we notice that on the system info tab, the memory metrics display “Not Yet Available” but after we restart Geronimo completely, web requests work and the memory values display.   Has anyone else seen anything like this?   _______________________________ Ian Hunter Solution Architect 925 Northpoint Parkway, Suite 430 Alpharetta, GA 30005 678.990.7416 office 770.754.4264 fax 404.314.8693 mobile