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From Pid <...@pidster.com>
Subject Re: tomcat memory usage
Date Fri, 29 Jan 2010 15:21:45 GMT
On 29/01/2010 15:13, Caldarale, Charles R wrote:
>> From: Pid [mailto:pid@pidster.com]
>> Subject: Re: tomcat memory usage
>
>> The overall size of the heap is controlled by 3 different groups of
>> settings, not just the one you referred to:
>>    -Xms512M          -Xmx512M
>>    -XX:NewSize=32m   -XX:MaxNewSize=4096m
>>    -XX:PermSize=64m  -XX:MaxPermSize=128m
>>
>> The overall amount of memory used is the sum of current values of each
>> these groups, plus non-heap memory.
>>
>> (How'd I do?)
>
> Not well.  The -Xmx and -Xms values include the NewSize; it is not a separate portion
of the memory space as PermGen is.

Dagnamit.  So the MaxNewSize, despite often being seen at high values in 
jmap outputs, is actually only applicable if the 'mx' allows it?


p


>   - Chuck
>
>
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