Hi Christopher,
Yes, we were on jdk 1.4 and now we have moved to 1.6.
After this, we were facing the BufferOverFlow on this particular page so
we increased the buffer size to 4 MB ( yes .. 4 MiB).
There is no increase in the number of users.
The heap space is set to 128 MB,
and Max Perm is set to 64mb.
Thanks,
Aparna
From:
Christopher Schultz <chris@christopherschultz.net>
To:
Tomcat Users List <users@tomcat.apache.org>
Date:
02/01/2011 03:37 AM
Subject:
Re: OutOfMemory issue
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Aparna,
On 1/31/2011 8:42 AM, Aparna1 V wrote:
> I am facing a frequent OutOfMemoryError on the Java heap space after
just
> a few hits on the application. (The page buffer for a few jsps are of
the
> range 4000kb)
4000kb is 4MiB. Is that what you meant? That's a pretty big buffer. What
do you need that big buffer for?
> The heap size for the app is 128 MB.
Is that fixed? What are you memory settings?
> Earlier, I was using TC 4 with mssql pooling(pool.exe) without any issue
> on a 64 MB heap size.
Were you using an older JVM version, too? I've found that usually
everything newer needs a bit more RAM than older versions.
> Is this an issue with the server memory management or is there something
> wrong with the configuration,
> or any other thing that i am overlooking? Please advise.
Has anything else changed recently?
The only time we ever got OOMEs was when we had actually reached a user
threshold where we simply needed more memory to handle the traffic.
Before then, we were running with a 64MiB heap and decided to double it.
- -chris
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