How do I fix stuck threads in WebLogic?
WebLogic Server diagnoses a thread as stuck if it is continually working (not idle) for a set period of time. You can tune a server’s thread detection behavior by changing the length of time before a thread is diagnosed as stuck, and by changing the frequency with which the server checks for stuck threads.
What is stuck thread max time?
WebLogic has a parameter named Stuck Thread Max Time, which configures the number of seconds that a thread must be continually working before the server considers the thread stuck. This value is set by the server administrator to separate threads that complete immediately and threads that do not.
What is a hogging thread?
Hogging Threads. The threads that are being held by a request right now. These threads will either be declared as stuck after the configured timeout or will return to the pool before that. The self-tuning mechanism will backfill if necessary.
What is stuck thread and hogging thread?
A hogging thread is a thread which is taking more than usual time to complete the request and can be declared as Stuck .
What is hogging thread count in WebLogic server?
What are hogging threads in WebLogic?
A hogging thread is a thread which is taking more than usual time to complete the request and can be declared as Stuck . How Weblogic determine a thread to declare as hogging? A thread declared as Stuck if it runs over 600 secs (default configuration which you can increase or decrease from admin console).
What is stuck thread?
Stuck Threads are threads that are blocked, and can’t return to the threadpool for a certain amout of time. By Default, the WLS comes with 600 secs. If some thread doesn’t return in 600 secs, It gets a flag ‘stuck thread’.
What causes stuck threads?
Weblogic tracks how long a thread has been assigned to a particular request. it has no control over what happens inside your servlet or EJB, so it doesn’t really know if the thread is genuinely making no progress, but it will report the thread as “stuck” if it doesn’t get control back within a certain threshold.
How do I check for hogging threads?
Open thread dumps in visualVM. Analyze dashboard from WebLogic console (managed server > monitoring > threads). Open thread dump files in “WLSDM Menu > Monitoring & Diagnostics > Profiling Dumps”. See how many threads got stuck?