This website has many JSP pages of which each has many JSPF included. I wonder whether or not the system is not be able to handle this kind of setting. But strange thing is that when we experienced the slowness, I looked at the usage of CPU and find that almost 90% of the CPU is idle.
Do anyone know what kind of load a tomcat can handle. I am thinking that maybe a load balancer will help. But I am still puzzled by the fact of low CPU usage at the time of slowness. >From the server status view in tomcat manager, I can see 's Request count: 127421' --- Jeffrey <[EMAIL PROTECTED]> wrote: > I have a apache/tomcat environment that has some > problems recently. The environment has the > following: > 1. Apache 1.3 > 2. Tomcat 5.0.28 (Max memory 384mb) > 3. JDK 1.4.2_06 > > My apache has MaxClient set to 256 (apache default). > The maxThread for tomcat is 500. The site is a > database driven site. > > It seems working fine when load is low. But when > there > are more than 150 threads (from the sever status > view > of the tomcat manager), it's response time is very > slow (5 - 10 minutes). I have tested the database > connections, they seem responding fairly well. > > Interesting thing is that most of time the slow > response time only happens when a user login. Once > the > user login and get the main menu page, the user will > get a good response time. Is it related to KeepAlive > connections. > > Another strange thing is that many threads always > show > up in the server status view on the tomcat html > manager page even though I am sure the request has > gone (I tested this by making a request, then close > the browser). > > My CPU usage is low when the slowdown is experienced > (Using the top command on this solaris box which has > old solaris operating system 2.6? with 1GB memory. > > I set the session timeout time to 5 minutes, but in > the session view of tomcat manager, I see message > "30 > - <40 minutes:136 sessions". How a session that is > more than 30 minutes is still there. Maybe I don't > understand this message correctly. > > Please advice. This is a production machine. Helps > are > greatly appreciated. > > Thanks. > > Jeffrey. > > > > Discover Yahoo! > Get on-the-go sports scores, stock quotes, news and > more. Check it out! > http://discover.yahoo.com/mobile.html > > --------------------------------------------------------------------- > To unsubscribe, e-mail: > [EMAIL PROTECTED] > For additional commands, e-mail: > [EMAIL PROTECTED] > > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
