Please review -XshowSettings a java launcher option.

Alan Bateman Alan.Bateman at
Fri Nov 12 09:40:30 UTC 2010

David Holmes wrote:
> :
> I'd be tempted to just drop the "VM options" part of this, unless you 
> are going to make a call into the VM to obtain them.
I was wondering about this too, or rather thinking that -XshowsSettings 
might likely be used in conjunction with other options like -showversion 
or VM specific options. For example, someone might do this:

java -XX+PrintCommandLineFlags -XshowSettings -showversion Foo

and the logs will capture the heap settings, the properties and locale 
info printed by showSettings, and the HotSpot and JDK version printed by 
-showversion. The only one that I'm sure is the default stack limit 
(when -Xss<size> or -XX:ThreadStackSize=<size> isn't specified) as I 
don't think we have a VM option to print that (except with 
+PrintFlagsFinal dump of course).


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