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From "Stefan Guggisberg" <stefan.guggisb...@day.com>
Subject Re: Too slow - adding 1,000 node into the repositroy
Date Mon, 21 Jul 2008 10:15:46 GMT
On Mon, Jul 21, 2008 at 11:20 AM, zhonglf <zhong.lunfu@gmail.com> wrote:
>
>
>
> Stefan Guggisberg-2 wrote:
>>
>> jackrabbit is not optimized for very flat node hierarchies (e.g. with more
>> than
>> 30k child nodes per node). if you create a deeper structure you'll
>> experience a
>> lot better performance.
>>
>> anyway, your figures seem to be *very* high (200s for 1k nodes)...
>> are you using any of the foillowing?
>> - references
>> - versioning
>> - large binaries
>>
>> cheers
>> stefan
>>
>>
>
> yes, all of them. Is this the reason?

probably yes. performance WRT large binaries should be significantly
improved by using the DataStore.

referential integrity and versioning are very powerful features but they
come at a certain cost. make sure you're only using them where needed.

other factors that might have a great impact on performance is the choice
of persistence manager and backend. bunde db persistence manager in
combination with embedded derby currently gets you the best performance.

if you change the persistence manager configuration make sure
modify the workspace.xml as well and not just the repository.xml.

cheers
stefan

>
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