Hi If you are on linux, do the following:
killall -3 java Then look into catalina.out. It will print all stack traces, including monitors being hold and waited for. Regards, Steffen > -----Original Message----- > From: Fredrik Tolf [mailto:[EMAIL PROTECTED] > Sent: Tuesday, July 01, 2008 6:11 AM > To: Tomcat Users List > Subject: Blocking threads in Tomcat > > Hi list! > > I've had some issues with requests not being carried out in > parallel by Tomcat. My problem is that I haven't been able to > figure out when a worker thread blocks and when it does not. > > To try and pin down the behavior, I did a little experiment. > I took a servlet that I had, that handles to separate URLs; > let's call them "/a" > and "/b". To try out the parallelism, I added a little delay > in the servlet code by calling Thread.sleep(10000). I then > tried them out in two browser tabs, and I find the results > much enigmatic. > > When I try to access "/a" in one tab and "/b" in another, > they both load in 10 seconds each -- that is, if I start the > request for "/a" at 12:00:10 and the request for "/b" at > 12:00:15, the request for "/a" will finish at 12:00:20, and > the request for "/b" will finish at 12:00:25. As one would expect. > > However, when I request "/a" in both tabs, the requests seem > to be carried out in sequence -- that is, if I again start > the request in tab > 1 for "/a" at 12:00:10 and the request for in tab 2 for, also > for "/a", at 12:00:15, the request for tab 1 will finish at > 12:00:20, and the request for tab 2 will finish at 12:00:30. > > Why is this? Is Tomcat explicitly not handling two requests > for the exact same URL in parallel? It is the only > explanation I can think of, but I cannot figure out how or > why it would make sense. If it is indeed the case, can I > somehow tell Tomcat to not do that? > > Thanks for your attention! > > Fredrik Tolf > > > > --------------------------------------------------------------------- > To start a new topic, e-mail: users@tomcat.apache.org To > unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] >
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