Peter Johnson [https://community.jboss.org/people/peterj] created the discussion "Re: Jboss with axis2 web service using high CPU utilization" To view the discussion, visit: https://community.jboss.org/message/732155#732155 -------------------------------------------------------------- When a request comes in, and a thread is allocated to service that request, that thread will use up 100% of a core while it is running (unles it has to mwait on somethign such as a database request). Of course, it should be running only briefly (in the 10s of milliseconds). High CPU utilization for a brief time is not a problem. Why do you think it would be? Have you tried running a load test? That is the only way to judge the performance of your system. By the way, you might want to compare a empty servlet request with an empty axis2 request to see what overhead axis2 is introductiong. I would set up load test for both cases. (I did an empty servlet test several years back and JBoss AS easily served way over 10K requests per second.) -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/732155#732155] Start a new discussion in JBoss Web Services at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&...]

Peter Johnson [https://community.jboss.org/people/peterj] created the discussion "Re: Jboss with axis2 web service using high CPU utilization" To view the discussion, visit: https://community.jboss.org/message/732462#732462 -------------------------------------------------------------- You should still try testing with an emopty servlet (no axis2). In fact, don't even deploy your app, create a second app with the empty servlet. That will tell you what overhead axis2 is introducing. Usually the only way to reduce CPU utilization are: a) Run on a bigger system (more cores) b) Run on multiple systems and split your workload among them. What have you done to tune the JVM? Specifically heap tuning? Have you monitored GC activity? -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/732462#732462] Start a new discussion in JBoss Web Services at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&...]

Peter Johnson [https://community.jboss.org/people/peterj] created the discussion "Re: Jboss with axis2 web service using high CPU utilization" To view the discussion, visit: https://community.jboss.org/message/732970#732970 -------------------------------------------------------------- A couple of comments. -Xmn2g: I would not let the young generation get up to half the heap size, you too often end up with too many full collection. I'd limit it to 1gb (I usually recommend 1/3 to 1/4 the heap size as a starting point for tuning). This is especially important when using the CMS collector because while the CMS collector is running you will loose the use of one of your cores because it will be busy running the collector. -XX:ParallelGCThreads=8: I hope that you have at least 8 cores. Never set this to more cores than you have. The JVM by default sets this to the number of cores (for up to 8 cores, but after that it does 6 threads per 8 cores IIRC.) You still haven't figured out the overheap introduced by Axis2 (not sure why you keep on ignoring this, especially since it is critical to resolving the issue you keep on brining up) -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/732970#732970] Start a new discussion in JBoss Web Services at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&...]