Rathna,
First off, if you have not already done so, I would contact/post a note on
the JRUN developer discussion group and with their support group and find
out if there is someway to configure JRUN to release memory. But I still
question why you would want to do this. If you release the JSP/servelets
from memory, you will have to recompile/reload them every time, and that
will slow down your web site.
The next thing I would do would be to take a hard look at your JSP's and see
if you are doing business logic/processes that would be better separated
into a Java object/bean class, and then call and use the bean class in your
JSP as required. Since the JVM will release the memory that the bean
occupies when it is no longer being referenced, this might help out.
Remember, the JSP should be for presentation only, all business logic that
can be separated out into a Java class should be.
After doing the above two steps, I would take a look at your server. Is it
an old, outdated machine? Are you running/hosting other processes on it,
and if so, can the server handle the additional load of hosting your web
site? Do you need to just purchase more memory for the server? I don't
know what type of server your using, it's configuration, and how much memory
you obtained when you purchased the server, and whether you are using the
server to run other web sites/processes other than the one your working on.
If you have a network admin/hardware guru, you may want to solicit their
input and find out if the server has enough memory to run the web site that
you are developing, particularly if you are running/hosting other processes
on it.
Hope this helps!
Celeste
-----Original Message-----
From: A mailing list about Java Server Pages specification and reference
[mailto:[EMAIL PROTECTED]]On Behalf Of Rathna
Sent: Friday, May 04, 2001 12:17 AM
To: [EMAIL PROTECTED]
Subject: Re: Garbage collection issue - URGENT
hi celeste,
In our application , we use large number of JSP's say around 300.
Will there be a problem for Jrun to load all the servlets into the
memory in the long run?.Does jrun has the mechanism of unloading
the servlet if it is not referenced for longer time?
with regards,
rathna.
Celeste Haseltine wrote:
> Rathna,
>
> Please double check what I am about to say on the Allaire developer web
> site, but I think that you have a misunderstanding of how a JSP
> complier/interpreter works, which is what JRUN is.
>
> In Java, you do a have garbage collection, such that when an object is no
> longer being "referenced" by anything else, the garbage collector comes in
> behind the scene and deallocates memory for you. But that is NOT how JRUN
> server works. It is a JSP interpreter/complier, and as such, when you
"hit"
> a JSP page, that page is compiled into a servlet, and is then stored in
> memory. It remains in memory UNTIL you either restart you server, or
change
> the JSP(at which time it is re-compiled). To my knowledge, JRUN server
> NEVER deallocates memory related to the JSP's or the servelets. Because
of
> this, you sometimes get bizarre behavior when you change your JSP's often
> enough WITHOUT stopping and restarting the JRUN server during the
> development phase. That is one reason why I always stop and restart my
JRUN
> server when I change either a JSP or a Servlet. I want to make sure that
> the previous copy has been "wiped" out of memory. Please note that this
is
> NOT how your Java Objects/Beans are handled. The "references" to those
> objects and beans are deallocated by the JVM. Remember, the JVM is NOT
> compiling/interpreting your JSP or servelets, it is JRUN.
>
> Again, make sure that I am correct on this by posting to the Allaire
> developers web site/discussion group for JRUN 3.0.
>
> Good luck!!!
>
> Celeste
>
> -----Original Message-----
> From: A mailing list about Java Server Pages specification and reference
> [mailto:[EMAIL PROTECTED]]On Behalf Of Rathna
> Sent: Thursday, May 03, 2001 8:01 AM
> To: [EMAIL PROTECTED]
> Subject: Garbage collection issue - URGENT
>
> Hi all,
>
> I wonder is there any garbage collection problem in Jrun 3.0 version.
> we are using JDK 1.2.2 in jrun 3.0 version on solarix box. In the long
> run
> the application becomes very slow.we have 1GB of swap space
> and after running the jrun(after several hit) the swap space reduced to
> nearly
> 15MB.so i have a feeling that the Jrun is not releasing the memory
> correctly.
>
> Is there any know memory issue in Jrun 3.0?
> FYI,we have said the heap size as 512MB for Jrun.
>
> Thanks in advance.
>
> --
> Cheers,
> rathna
>
>
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>
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--
Cheers,
rathna
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P Rathinavel
Sr.Systems Engineer - eCommerce Division
Wipro Technologies
Electronic City
Bangalore 561229, India
Tel : 8520420/416/424/408 Extn : 1322
E-mail: [EMAIL PROTECTED]
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Some relevant FAQs on JSP/Servlets can be found at:
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http://www.esperanto.org.nz/jsp/jspfaq.html
http://www.jguru.com/jguru/faq/faqpage.jsp?name=JSP
http://www.jguru.com/jguru/faq/faqpage.jsp?name=Servlets
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Some relevant FAQs on JSP/Servlets can be found at:
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http://www.esperanto.org.nz/jsp/jspfaq.html
http://www.jguru.com/jguru/faq/faqpage.jsp?name=JSP
http://www.jguru.com/jguru/faq/faqpage.jsp?name=Servlets
