thread dump analyzer

Jstack the thread state in the Dump log fileIn the dump file, the interesting thread states are: Deadlock,Deadlock (focus on) In execution,Runnable Waiting for resources,waiting on condition (focus) Waiting to get the monitor,waiting on Monitor entry (focus) Pause,Suspended Object Wai

http://heylinux.com/archives/1085.html using thread dump analysis to find Java code with high CPU consumption and memory overflowFirst of all, I want to thank my good friend Zhao to share the experience of the flower.I believe that in the actual work, you will certainly encounter high CPU consumption and memory overflow caused by the code.Usually when this happens, we take it for granted that the developer

====2016/5/20:The thread stack of the server that requires Mr to be intercepted for Mr Performance tuning (thread Dump)Comrade-in-arms introduced the method is this:①, using the PS command "PS-EF | grep java "Filters out all Java processes (after all, MapReduce is running in the JVM)②, the PID (process ID) of the running process for which Mr is found from the Jav

JstackTo print out the Java stack information for a given Java process ID or core file or remote Debugging service, if it is on a 64-bit machine, the option "-J-D64" needs to be specified, and the Jstack usage of Windows supports only the following:Jstack [-l][f] PIDIf a Java program crashes generating a core file, the Jstack tool can be used to obtain information about the core file's Java stack and the native stack, making it easy to know how the Java program crashes and where the problem occu

Jstack to print out the Java stack information for a given Java process ID or core file or remote Debugging service, if it is on a 64-bit machine, the option "-J-D64" needs to be specified, and the Jstack usage of Windows supports only the following: jstack [-l][f] PIDIf a Java program crashes generating a core file, the Jstack tool can be used to obtain information about the core file's Java stack and the native stack, making it easy to know how the Java program crashes and where the problem oc

[2015/08/25 20:50:13.254] {threadlauncher2[threadpool[system]]-1} Thread Dump generated Tue 20:50:13 CST "Attac H Listener "Id=4 RUNNABLE "Threadlauncher2[threadpool[system]]-1" id=10 RUNNABLE