What is permspace?

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Chris - 12 Jul 2006 03:44 GMT

What is permspace? I keep seeing references to it in Java blogs and web
pages. Apparently it's some kind of memory. It's somehow different from
the stack and the heap?

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Stefan Ram - 12 Jul 2006 04:08 GMT

>What is permspace? I keep seeing references to it in Java blogs
>and web pages. Apparently it's some kind of memory. It's
>somehow different from the stack and the heap?

Java hackers never die, they just move to permspace.

(In Smalltalk, PermSpace is used to hold all quasi permanent
objects. That is, objects housed in PermSpace are exempt from
being reclaimed by any of the reclamation. The Eclipse VM's
permSpace is the area of the VM that is used to store data
structures and class information (not instances, but the class
definitions themselves. [information scratched from two web
pages])

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Luc The Perverse - 12 Jul 2006 04:39 GMT

> Java hackers never die, they just move to permspace.

I prefer to always have an instance of object Luc.

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LTP

for( Base i : allYourBase)
i.AreBelongToUs();

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IchBin - 12 Jul 2006 04:22 GMT

> What is permspace? I keep seeing references to it in Java blogs and web
> pages. Apparently it's some kind of memory. It's somehow different from
> the stack and the heap?

PermSpace is the area of the VM that is used to store data structures
and class information (not instances, but the class definitions
themselves). For Eclipse you can increase it by using -XX:MaxPermSize=

Thanks in Advance...
IchBin, Pocono Lake, Pa, USA http://weconsultants.phpnet.us
__________________________________________________________________________

'If there is one, Knowledge is the "Fountain of Youth"'
-William E. Taylor, Regular Guy (1952-)

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Steve W. Jackson - 12 Jul 2006 16:20 GMT

> > What is permspace? I keep seeing references to it in Java blogs and web
> > pages. Apparently it's some kind of memory. It's somehow different from
[quoted text clipped - 6 lines]
> Thanks in Advance...
> IchBin, Pocono Lake, Pa, USA http://weconsultants.phpnet.us

Java tuning is a complex topic. For 5.0, there's detailed info at
<http://java.sun.com/docs/hotspot/gc5.0/gc_tuning_5.html>.

= Steve =

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Steve W. Jackson
Montgomery, Alabama

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What is permspace?

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