-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Steve,
Steve Cohen wrote: > One additional restriction I have is a security bureaucracy from hell. You can use jmap from the command-line. That will give you a thread dump which can help you see what all your threads are doing. If you are using a system that uses POSIX threads, it might also help to see what the output of 'ulimit -u' which will tell you the process limit for your user. POSIX threads are essentially processes, so threads count against your process limit. The obvious answer is that you simply have too many threads being created. There are a number of reasons you could be running out of threads. Here are some: 1. Too many request processor threads configured in server.xml (see your <Connector> element). Inspect your configuration. You may have more connectors configured than necessary (I've seen configurations where both HTTP and AJP connectors are both enabled but only one is being used). 2. Too much file I/O. If you are using background threads to read/write files independently of the request processor thread, you might be creating too many of them. I recommend using a thread pool to schedule background jobs. 3. Timer threads. If you are using java.util.Timer, you may be creating more threads than you realize. Check your use of java.util.Timer and possibly use a thread pool for timed tasks. 4. Quartz, Quartz, Quartz (this is a job scheduler that generates a lot of questions on this list). Check any uses of Quartz. - -chris -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAkmJ2YQACgkQ9CaO5/Lv0PBH1gCgq+lrPmgTjRhEF1JEf9jBs4oe Vq4AoJ18SigCd8pkSCh4eR0qDOawyhpu =tIYg -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
