JVM option -Xss - What does it do exactly

Question

It says here that -Xss is used to  set thread stack size   what does it mean exactly  Could anyone help me understand this

User · Answer

It indeed sets the stack size on a JVM   You should touch it in either of these two situations    StackOverflowError  the stack size is greater than the limit   increase the value OutOfMemoryError  unable to create new native thread  too many threads  each thread has a large stack   decrease it    The latter usually comes when your Xss is set too large - then you need to balance it  testing

User · Answer

Each thread in a Java application has its own stack  The stack is used to hold return addresses  function method call arguments  etc  So if a thread tends to process large structures via recursive algorithms  it may need a large stack for all those return addresses and such  With the Sun JVM  you can set that size via that parameter

User · Answer

Each thread has a stack which used for local variables and internal values   The stack size limits how deep your calls can be   Generally this is not something you need to change

User · Answer

If I am not mistaken  this is what tells the JVM how much successive calls it will accept before issuing a StackOverflowError  Not something you wish to change generally

[java] JVM option -Xss - What does it do exactly?

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