Hi, please try to get a thread dump from the jvm when tomcat does not respond. using suns jdk 6 you can use the following tools:
jps (will give you the ids of your java processes) jstack <pid> (gives you the thread dump) that will help to analyze what causes the slow down. regards marcel On Thu, Nov 12, 2009 at 02:40, rokham <somebodyik...@gmail.com> wrote: > > Hi, > > I've written a web application using Jackrabbit. I have Tomcat as my web > server and I'm having a strange problem when a large number of requests are > sent to Tomcat simultaneously. > > Here's the scenario: > > When I have about 7 people accessing the server and sending about 10-15 > requests at a time, the server starts off very strong and keeps going for > about 5 minutes (Each of the 7 people sends 3-4 batches of requests over > those 5 minutes. This means in 5 minutes we have 7 people sending about 50 > requests each. Therefore a total of 350 requests). After the 5 minutes the > sever slows down and about 2-3 minutes after doing the same routine, Tomcat > stops responding. > > I was monitoring the system and the CPU was calm and the memory was running > at about 100 MB. But it's really strange that Tomcat stops responding even > though the server is not doing anything. And it's not like the request has > timed out. No error msg or anything is sent back from Tomcat. > > I'm using Jackrabbit as my DB and I'm having a really hard time spotting the > problem. I don't know if I need to tweak tomcat's configs, or something in > Jackrabbit or is it something with Tomcat and Jackrabbit talking to each > other, that I need to know about. > > I came across the post below and the line saying It is caused by an in > accessible data base. made me wonder if there's a glitch between tomcat and > jackrabbit. > http://www.mail-archive.com/tomcat-u...@jakarta.apache.org/msg158745.html > > Thank you in advance. Any help is much appreciated, since I need to have the > system ready in a week. > > > > -- > View this message in context: > http://n4.nabble.com/Tomcat-stops-responding-due-to-too-many-requests-using-Jackrabbit-tp605488p605488.html > Sent from the Jackrabbit - Dev mailing list archive at Nabble.com. >
