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From ndesk1900 <ndesk1...@gmail.com>
Subject Re: performance issue;
Date Sun, 02 Aug 2009 20:05:16 GMT

Could someone direct me to literature that deals with performance enhancement
in jackrabbit?


ndesk1900 wrote:
> 
> Hello All,
> 
> Here the subtree that i'm having performance issues with;
> 
> Features
> 
> -- Feature
>     x = 10
>     y = 100
>     val = [ multi value property ];
>     NNode
>     -- Feature
>         reference property to some Feature node
>     -- Feature
>         reference property to some Feature node
>     (around 30 such Feature nodes under NNode)
> 
> -- Feature
>     x = 2661
>     y = 100
>     val = [ multi value property ];
>     NNode
>     -- Feature
>         reference property to some Feature node
>     -- Feature
>         reference property to some Feature node
>     (around 30 such Feature nodes under NNode)
> 
> (thousands of such Feature nodes under the Features Node; maybe approx
> 150,000)
> 
> Issues:-
> 
> 1. When i execute an XQuery like this-
> "Features/Feature[x=2661]" i get NO results. I am quite confident that
> there exists some Feature nodes with this value for X, i wonder if this
> issue has to do with the 'large amount of data' in the repository.
> 
> 2. When i ran an XQuery like this "Features/Feature" to get all feature
> nodes i get messages like these.
> 
> 25297 [main] INFO
> org.apache.jackrabbit.core.persistence.bundle.util.BundleCache - num=2436
> mem=8191k max=8192k avg=3443 hits=46666 miss=23334
> 26974 [main] INFO
> org.apache.jackrabbit.core.persistence.bundle.util.LRUNodeIdCache -
> num=0/10240 hits=0 miss=80000
> 
> I read this post: - 
> http://www.nabble.com/newb-performance-question-td17629427.html#a17629427
> http://www.nabble.com/newb-performance-question-td17629427.html#a17629427 
> but the solution included something to do with WEBDAV which i am not
> using. The post also had something to do with adding these lines to do the
> repository.xml.
> <DataStore class="org.apache.jackrabbit.core.data.FileDataStore"> 
>      
>      
> </DataStore> 
> 
> "The data store is optionally used to store large binary values.", i don't
> think i am dealing with any large single binaries here, so i am not sure
> if this will do the trick. Also, i hope there is a solution without need
> to RE-index everything. I have loaded tremendous amount of data in the
> repository which will take me days to re-index.
> 
> Thanks
> Neville
> 
> (PS:- Also, i was wondering is there is some kind of GUI where you can
> 'view'/edit your repository real time?)
> 

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