Hello Mark, Thank you We are working in different time zone. & We will try the thread dump meantime...Would you like to share any check points in thread dump or share some troubleshooting steps/tools to identify the issue. The visualgc plugin in jvisualvm is not supported for the jvm 1.6.
Is there any configuration to include timestamp in tomcat std.out or std.err log files. **Attached is the sequence flow that we are trying in our load environment; Itr-1: If we attach a commercial tool (forget the name-it something like yourjdk... will share you as soon as I get) the jvm crashes within 10-15 minutes; Thread-count=150 Itr-2: If we attach a commercial tool (forget the name-it something like yourjdk... will share you as soon as I get) the jvm crashes within 50-55 minutes; Thread-count=300 Itr-3: If we attach a commercial tool (forget the name-it something like yourjdk... will share you as soon as I get) the jvm crashes within 50-55 minutes; Thread-count=30 Itr-4: The commercial tool was disconnected from jvm monitoring and started the load with thread-count=30; & last few hours before checked it's was running;monitoring with jvisualvm. Regards Mahu -----Original Message----- From: Mark Thomas [mailto:ma...@apache.org] Sent: 14 March 2016 20:14 To: Tomcat Users List Subject: Re: Tomcat 6.x 32bit-- becomes non responsive state / crash/hang On 14/03/2016 14:41, Mahudeswaran A wrote: > Hi, > > We are facing unusual issue in Tomcat 6.x, where Tomcat 6.x becomes non > responsive state after two week's time. > This happens randomly; > The jvisualvm screen shows CPU, memory, thread are normal and we don't see > memory leak, thread leak or CPU hike. > JVM running is 32 bit; > In our lab, we are simulating this issue by running a load but still trying > our level best but couldn't. > Min heap=256MB; Max heap=512MB > Thread count=150 > Tomcat idle session timeout=30minutes > In out load environment the thread count reduced to 30; > > Any insights on why the tomcat becomes non responsive; Take a series of 3 thread dumps, ~15s apart. If you need help analysing them, post them here. Mark --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
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