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Memory Args:What does -Xmn stand for ?

Dhondiba Joshi
Ranch Hand

Joined: Jan 23, 2004
Posts: 39
Our server starts with following

-Xmn519m -Xms1559m -Xmx1559m -XX:MaxPermSize=128m -XX ermSize=128m -XX:+DisableExplicitGC -XX:NewSize=320m -XX:MaxNewSize=320M -XX:SurvivorRatio=8

Question: What does -Xmn stand for ? Is it one of the -XX:NewSize -XX:MaxNewSize ? If so does get nullified by
-XX:NewSize=320m -XX:MaxNewSize=320M mentioned later.

So now the server is running with NewSize as 519 m or is it still 320 m?

KArol Muszynski
Ranch Hand

Joined: Aug 09, 2005
Posts: 45
For example in HP JVM which comes from Sun JVM -Xmn replaces -XX:NewSize parameter. So in your case, I think, New Generation will have 519M.

When You asking questions about JVM, it will be easier to answer You if we will know which JVM do You use (Version, Vendor)

Best Regards,
KArol Muszynski
I agree. Here's the link:
subject: Memory Args:What does -Xmn stand for ?
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