1

Machine Install memory : 8GB

In the Jboss developer studio, while building the project or sometimes while starting the server I am getting below the exception,

Error occurred during initialization of VM

Could not reserve enough space for object heap

Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=256m; support was removed in 8.0

in jbdevstudio.ini configuration file I have set the below heap size,

  • -Xms512m
  • -Xmx1024m

What size should I use so jboss studio will work properly ?

Jayanand Raghuwanshi
  • 499
  • 3
  • 12
  • Make sure you are using a 64 bit JVM. – Holger Mar 01 '17 at 13:49
  • Yes I am using 64 bit version – Jayanand Raghuwanshi Mar 02 '17 at 06:25
  • It worked when I changed the values to, -Xms1024m -Xmx1024m. But what values should we use.. ? and on what basis..? – Jayanand Raghuwanshi Mar 02 '17 at 06:55
  • 1
    The warning regarding the `MaxPermSize` option can easily be eliminated by removing the `MaxPermSize=256m` option from the configuration. It’s entirely obsolete in Java 8. The failure to reserve enough heap space is normally connected to the `-Xmx` setting only. With the same amount of the available memory and the same `-Xmx` option, you should get the same result. Raising the `-Xms` setting should not help here; it’s more likely that the amount of available RAM has changed in-between. It seems that the a significant portion of the 8GB is already occupied when you try to start JBoss… – Holger Mar 02 '17 at 11:13
  • Thanks @Holger.. I see what i did wrong. I have defined Xmx to 1024 in the config and While trying to start JBoss, it was throwing an exception. Now it is clear that.. why it was throwing an exception.. bcoz the available RAM at that time was may be less than 1024.. – Jayanand Raghuwanshi Mar 02 '17 at 11:57

0 Answers0