At 22:33 09.02.00 , Jim Richards wrote:
> >- performance for entity beans is orders of magnitude worse that that of
> >good commercial servers
>
>This can be improved with the implementation of the isModified thingy that
>weblogic uses and is implemented in Jonas ... works like a treat ... my
>servlet based system sped up about 400% from doing this ...
I'm talking about orders of magnitude after the optimizations you talked
about. we've tried them. we ran the exact same CMP EB code that was
virtually unusable on JOnAS on orion and that just blew us away. give it a
try. you'll see the difference especially when using finder methods a lot.
my intention is not to bash on JOnAS but the difference is just enormous.
it allows you to program in a whole different way (a lot sloppier ;-).
>If you set your trace level to include 15 in the jonas.properties file
>(or BULLEJB.properties for the old versions) then you see lots of
>store and load calls, but after isModified then the store calls go away
>and it runs off the database cache for the loads ...
>
>If you are using lots of call to entity beans outside of a transactional
>scope as well (in a client programme) then this will also cause lots of
>disks accesses that are reduced with the isModified thingy ...
>
>
>
>--
> An army marches as fast as its slowest stomach.
> Mr Grumpy - what are you on about?
> http://www.cyber4.org/members/grumpy/index.html
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