to increase MaxPermSize memory in Java by command line

Question

Could you please explain me how to increase this PermSpace size. I am using Gate application and loading huge amount of data and large number of plugins and unfortunately after

Answer 1

You have to use -XX:MaxPermSize. A sample command could be:

java -Xms128m -Xmx512m -XX:MaxPermSize=512m ...

Answer 2

-XX:MaxPermSize=256m

Maybe combined with 32 bit addresses for objects, instead of 64 bits

-XX:+UseCompressedOops

Enables the use of compressed pointers (object references represented as 32 bit offsets instead of 64-bit pointers) for optimized 64-bit performance with Java heap sizes less than 32gb.

See VM Options.

Also check that String internalization does not occur. XML introduced in the past a String.intern() to save space, but then Perm space grows. So maybe check your XML settings.

Answer 3

From Gate's documentation

2.7.5 I got the error: Could not reserve enough space for object heap [#]

GATE doesn’t use the JAVA_OPTS variable. The default memory allocations are defined in the gate/build.xml file but you can override them by creating a file called build.properties in the same directory containing
runtime.start.memory=256m
runtime.max.memory=1048m

Check your gate/build.xml file and include the options cited in the other answers