Re: [opennms-devel] New big memory install

[Zac T. <zt...@ma...>]

How do I read the output? You say adjust the heap by reading the  
output in output.log, but what does the output show and how do I  
translate that into a good value to use?

In example line I have on a virgin install is:

754.922: [GC [PSYoungGen: 35264K->976K(56512K)] 70465K->36177K 
(107840K), 0.0058200 secs]
864.054: [GC [PSYoungGen: 37072K->1568K(56832K)] 72273K->36769K 
(108160K), 0.0096010 secs]
873.296: [GC [PSYoungGen: 37631K->1540K(57024K)] 72833K->36742K 
(108352K), 0.0191470 secs]
910.178: [GC [PSYoungGen: 38404K->1552K(57408K)] 73606K->36753K 
(108736K), 0.0073920 secs]s]


zac



On 30 Mar 2006, at 14:31, David Hustace wrote:

>
> On Mar 30, 2006, at 5:13 AM, Zac Tolley wrote:
>
>> Is there anything I should tweek in the startup scripts to make  
>> sure I'm making use of the memory?
>
> Make a file called opennms.conf in the OpenNMS etc directory.  In  
> that file put:
>
> JAVA_HEAP_SIZE=2560
> ADDITIONAL_MANAGER_OPTIONS="-d64 -XX:+PrintGCDetails -XX: 
> +PrintGCTimeStamps"
>
> Adjust JAVA_HEAP to you needs by monitoring the output of the GC  
> details in output.log.  2560 is probably way more than you need.
>
>
> -David
>
>
> David Hustace
> The OpenNMS Group, Inc.
> Main  : +1 919 545 2553   Fax:   +1 503-961-7746
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