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From David Sean Taylor <da...@bluesunrise.com>
Subject Re: Jetspeed Cache Question
Date Tue, 13 Nov 2007 07:46:19 GMT

On Nov 9, 2007, at 2:42 PM, Sie, Yang wrote:

> Hello David:
>
> Now I am able to monitor the memory usage of jetspeed cache objects.
> However, I have some concerns about the size of the cache.
>
> After 14 people tested for half an hour. The preferencesCache ends up
> like 9M. I am surprised to that number comparing to all the data cache
> we stored for portlet which was only 923K (we didn't use Jetspeed
> content cache, we created our own content cache if you wonder where I
> got 923K). Any idea why the preferencesCache number is so high? I  
> didn't
> seem to see any plateau when the load test was performing. The
> preferencesCache just kept growing. Is that normal? BTW,other jetspeed
> cache objects are very small.
>
> Total Number of Cache Objects in jetspeed: 6
> CacheName                        MemoryStoreSize InMemorySize
> portletDefinitionNameCache             62          119838
> portletApplicationNameCache             2           2991
> portletApplicationOidCache              2            0
> portletDefinitionOidCache               62           0
> portletContentCache                     0            0
> preferencesCache                        5591       9094113
>
I imagine its because the Java Preferences impl loads quite a lot of
objects
Will investigate this one in more detail and get back to you




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