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Posted to users@tomcat.apache.org by "div.gcet" <di...@gmail.com> on 2009/11/20 11:14:06 UTC
Performance Problem
Hi all,
I am developing a web application using Tomcat 6.0 and MyEclipse
IDE. For my requirements i have to store a lot of (100-200) Lists objects
in my sessions. And any list may be associated with a lot other objects,
because of this the performance of my application have become very slow. As
i run through my application its becoming more slow. Please can anybody
provide my any suggestion on this issue. Thanks in advance.
Regards,
div.gcet
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Re: Performance Problem
Posted by Christopher Schultz <ch...@christopherschultz.net>.
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Peter,
On 11/20/2009 5:32 AM, Peter Crowther wrote:
> Why are they in the Session rather than anywhere else? Why do they
> exist at all?
To improve performance, of course!
- -chris
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Re: Performance Problem
Posted by Peter Crowther <pe...@melandra.com>.
2009/11/20 div.gcet <di...@gmail.com>
>
> Hi all,
>
> I am developing a web application using Tomcat 6.0 and MyEclipse
> IDE. For my requirements i have to store a lot of (100-200) Lists objects
> in my sessions. And any list may be associated with a lot other objects,
> because of this the performance of my application have become very slow. As
> i run through my application its becoming more slow. Please can anybody
> provide my any suggestion on this issue. Thanks in advance.
>
> Storing large amounts of data in a session is not a good idea, as it leads
to the kinds of performance problems you're seeing. I would recommend
finding another way of storing your Lists objects, or review for other ways
of meeting the requirements. Why are they in the Session rather than
anywhere else? Why do they exist at all?
- Peter
Re: Performance Problem
Posted by Pid <pi...@pidster.com>.
On 20/11/2009 10:14, div.gcet wrote:
>
> Hi all,
>
> I am developing a web application using Tomcat 6.0 and MyEclipse
> IDE. For my requirements i have to store a lot of (100-200) Lists objects
> in my sessions. And any list may be associated with a lot other objects,
> because of this the performance of my application have become very slow. As
> i run through my application its becoming more slow. Please can anybody
> provide my any suggestion on this issue. Thanks in advance.
>
> Regards,
> div.gcet
1. Don't store such big lists in the session?
2. Don't store such big objects in the lists?
3. Add a lot more memory to your server?
What do your app logs say?
If you are doing the above, then you may be running into garbage
collection issues*. It sounds like you're trying to put too much data
into memory - which is not a infinite resource.
Enable the garbage collection log and look for lots of repeated full gc's.
Your app architecture probably needs a rethink.
p
* Of course, I'm just guessing because your post is a bit short of
actual info.
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