hi, I have checked issuing the same command netstat but it displays nothing. also sometimes tomcat uses 70% of the CPU when this things happen.
Regards, Deepak On Sun, 15 Feb 2004 Antonio Fiol Bonnín wrote : >Hi, > >I am not Filip, but in my case most "hangings" were caused by too low settings of >Tomcat's maxThreads / maxProcessors or too low setting for the database connections >accepted. > >And as Deepak says he is using Apache in front, I'd also check the Apache, just in >case. > >To check, wait for it to hang, and before stopping tomcat, execute on every machine >involved: > >netstat -n | grep SYN_RECV > >If you see a large (more than 2-3) quantity of lines there, the involved service >(local IP:port) is the blocking one. > >SYN_SENT would be the counterpart of this. However, as you will not notice the hang >immediately, it is unlikely that you see the SYN_SENT. If you do, blocking service is >(remote IP:port). > >Hope that helps. > > >Antonio Fiol > > > >Parsons Technical Services wrote: > >>Filip, >> >>Does this symptom sound similar to problems with memory leaks? >> >>Doug >> >>----- Original Message ----- From: "Filip Hanik (lists)" <[EMAIL PROTECTED]> >>To: "Tomcat Users List" <[EMAIL PROTECTED]>; "Deepak Hegde" >><[EMAIL PROTECTED]> >>Sent: Saturday, February 14, 2004 11:12 PM >>Subject: RE: how to increase tomcat performance >> >> >> >>>first go over your configurations, make sure you have enabled enough >>> >>threads >> >>>for the connectors (read docs) >>> >>>then get a performance profiler and go to work :) >>> >>>tomcat is pretty optimized, so it could be something in your code >>> >>>Filip >>> >>> >>> >>>-----Original Message----- >>> From: Deepak Hegde [mailto:[EMAIL PROTECTED] >>>Sent: Saturday, February 14, 2004 8:03 PM >>>To: [EMAIL PROTECTED] >>>Subject: how to increase tomcat performance >>> >>> >>>Hi All, >>> >>>I am running Tomcat 4 and Apache 1.3 and Struts Framework on Sun Sparc >>>machine having O.S 5.8 version. >>> >>>Web application is developed to use Postgres Database also. >>> >>>I am facing lots of performance issues with Tomcat i.e sometimes when user >>>connection increases tomcat process hangs and website stops opening >>> >>>and some times it goes very slow. The Problem gets sloved when i restart >>> >>the >> >>>tomcat service again. >>> >>>Somebody please help me .. >>> >>>Regards, >>>Deepak >>> >
