Yoo,
Probably you already looked at it but :
1) Make sure not to use reloadable in context descriptions.
2) Start tomcat with optimal java parameters, concerning memory heap and stack
3) Make sure that connections to database are minimal, do requery if
answer is always the
same...
Good luck,
Greetings O.
On 5/6/05, 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.
>
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