Hi all ...
I am just writing some portlets connecting to external sources and had some
ideas on how to enhance the request performance (processing time).
As I understand, Jetspeed calls every getContent() of a portlet in a
sequential way. This means if a portlet waits for an answer of a third party system,
the hole request will wait till this third party system has answered.
So if you have 3 portlets in a portal screen connecting to different third
party systems a request in the jetspeed engine would look like this.
--
request time
-> portlet01.getContent()
-> connect to third party system 10 ms
-> wait for result 90 ms
-> porcess and return result 10 ms
-> portlet02.getContent()
-> connect to third party system 10 ms
-> wait for result 160 ms
-> porcess and return result 10 ms
-> portlet03.getContent()
-> connect to third party system 10 ms
-> wait for result 120 ms
-> porcess and return result 10 ms
return result
-- processing time 420 ms
Another solution to handle this request is by a thread pool which will
call the getContent() method of each portlet in parallel, the request would
look like this.
-->
request time
-> portlet01.getContent()
-> connect to third party system 10 ms
-> portlet02.getContent()
-> connect to third party system 10 ms
-> portlet02.getContent()
-> connect to third party system 10 ms
-> wait for result 160 ms
-> porcess and return result 10 ms
-> porcess and return result 10 ms
-> porcess and return result 10 ms
return result
<-- processing time 220 ms
The processing time for a request would be pretty faster. Even when adding
some time for thread handling and synchronization would beat the sequential
method. Or do I oversee something?
Comments, remarks, criticisms welcome...
Mirko Buholzer
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