Tomcat performance problems after a while

[Rafael Angarita <ra...@telcel.net.ve>]

    My webserver is stopping  answering requests or answers too slowly 
after a while running.
    If  a http request is sent  to tomcat directly it's answered quickly 
but the same request to apache takes a lot of time to be answered 
(request a .jsp file).
    If  the tomcat process is  stopped and started again (the apache is 
not stopped), the requests to apache are answered quickly.
    It looks like something is happening inside the java process that 
produces a poor performance after a while, but I have no clue, how to 
look inside the java, it could be a configuration issue or  an 
application issue  but all  I  can see  is not helpful to establish the 
main reason....
    Any suggestion?  

    The environment:
    - Solaris 8
    - Apache 1.3.26
    - tomcat 3.2.4
    - java 1.2
    - TheadPool Max = 600

    Thanks is advance,

-- 

Rafael Angarita




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Re: Tomcat performance problems after a while

[Bill Barker <re...@verizon.net>]

Well, half right :-).

The 3.2.x line is known to have memory leaks.  Upgrading to Tomcat 3.3.1 is
probably enough.  For web-apps that don't require the Servlet-2.3/JSP-1.2
features, it is usually at least as fast as TC 4.0.x.  TC 4.1.x has
optimizations in the JSP compiler that are unlikely to be back-ported to the
3.3 line, so heavy JSP sites will win here.

As always, your mileage may very depending on what your web-app actually
does.  There is no such thing as one-size-fits-all.

"Kwok Peng Tuck" <pe...@makmal.com> wrote in message
news:3D8A7764.7070003@makmal.com...
> Consider moving to tomcat 4, it is faster than tomcat 3. I believe
> tomcat 4 was redesigned for better performance. Also maybe there is some
> code segement in the jsp that is eating up a lot of time, so maybe you
> could get someone (if you're not the author of the page) to check it out.
>
> Rafael Angarita wrote:
>
> >    My webserver is stopping  answering requests or answers too slowly
> > after a while running.
> >    If  a http request is sent  to tomcat directly it's answered
> > quickly but the same request to apache takes a lot of time to be
> > answered (request a .jsp file).
> >    If  the tomcat process is  stopped and started again (the apache is
> > not stopped), the requests to apache are answered quickly.
> >    It looks like something is happening inside the java process that
> > produces a poor performance after a while, but I have no clue, how to
> > look inside the java, it could be a configuration issue or  an
> > application issue  but all  I  can see  is not helpful to establish
> > the main reason....
> >    Any suggestion?
> >    The environment:
> >    - Solaris 8
> >    - Apache 1.3.26
> >    - tomcat 3.2.4
> >    - java 1.2
> >    - TheadPool Max = 600
> >
> >    Thanks is advance,
> >





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Re: Tomcat performance problems after a while

[Kwok Peng Tuck <pe...@makmal.com>]

Consider moving to tomcat 4, it is faster than tomcat 3. I believe 
tomcat 4 was redesigned for better performance. Also maybe there is some 
code segement in the jsp that is eating up a lot of time, so maybe you 
could get someone (if you're not the author of the page) to check it out.

Rafael Angarita wrote:

>    My webserver is stopping  answering requests or answers too slowly 
> after a while running.
>    If  a http request is sent  to tomcat directly it's answered 
> quickly but the same request to apache takes a lot of time to be 
> answered (request a .jsp file).
>    If  the tomcat process is  stopped and started again (the apache is 
> not stopped), the requests to apache are answered quickly.
>    It looks like something is happening inside the java process that 
> produces a poor performance after a while, but I have no clue, how to 
> look inside the java, it could be a configuration issue or  an 
> application issue  but all  I  can see  is not helpful to establish 
> the main reason....
>    Any suggestion? 
>    The environment:
>    - Solaris 8
>    - Apache 1.3.26
>    - tomcat 3.2.4
>    - java 1.2
>    - TheadPool Max = 600
>
>    Thanks is advance,
>



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