There actually two type of memory used by Jaikoz, heap memory and permanent memory. The instructions only explain how to increase heap memory but it is possible to run outof permanent memory (which doesnt normally happen) . If you are running out of memory after loading a mosdest amount ofg files please try increasing your permananent memory from the default of 64mb to 150 mb as follows.
Add -XX:MaxPermSize=150m as an additional option
OSX:Info.plist
-Xms150m -Xmx300m
becomes
-Xms150m -Xmx300m -XX:MaxPermSize=150m
linux:jaikoz.sh
java -Xms150m -Xmx300m -jar lib/jaikoz.jar -l2 -m2 -f
becomes
java -Xms150m -Xmx300m -XX:MaxPermSize=150m -jar lib/jaikoz.jar -l2 -m2 -f
windows:jaikoz.bat
java -Xms150m -Xmx300m lib\jaikoz.jar -l2 -m2 -f
becomes
java -Xms150m -Xmx300m -XX:MaxPermSize=150m -jar lib\jaikoz.jar -l2 -m2 -f
windows:jaikoz.exe
here the bad news, its not possible to change this value for .exe file so if you are running into this problem you will have to use jaikoz.bat instead for the moment.