CODEWITHSUNDEEP
javaservlets
The Machine
The Machine

Reputation: 1283

Java OutOfMemory error in filter

I get a java.lang.outOfMemoryError exception, while writing a big file to the servletOutputStream. Every response is by default wrapped using a ehcache.constructs.web.filter Object for GZIP compression. And as per the logs, the exception is thrown in the Filter object. Is there a way to increase the available memory so, that the outOfMemoryError Exception does not occur ?

Upvotes: 2

Views: 841

Answers (4)

Pat
Pat

Reputation: 5911

Don't forget about possibly needing to increase your PermGen size:

-XX:PermSize=64m -XX:MaxPermSize=256m

Also do make sure you are efficiently streaming out the file. There may be unnecessarily large buffering in the output or inputstream pipe.

Upvotes: 0

Sean Owen
Sean Owen

Reputation: 66886

You need to add the option "-Xmx1024m" to the java command which runs your servlet container. (Replace 1024m with whatever heap size you like; this means 1024 megabytes.) If you're using, say, Tomcat, then this means you set this in the environment variable CATALINA_OPTS. Your server configuration will vary.

However, the problem is buffering such a big file in memory. This is wasteful. Try this compression filter, which doesn't buffer this way:

http://sourceforge.net/projects/pjl-comp-filter/

Upvotes: 1

Bozho
Bozho

Reputation: 597224

Set the following JVM options to your servlet container -Xmx256m -Xms128m (in Tomcat it is in catalina.sh / catalina.bat)

Upvotes: 0

navr
navr

Reputation: 72

Use -Xmx Java command line option as shown below

java -Xms256m -Xmx512m com.test.MyMain

Xms represents lower end of memory allocation and Xmx represents the upper end of memory allocation

Upvotes: 0

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