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From "Shaun Barriball" <sbarr...@yahoo.co.uk>
Subject Profiling shows Session management to be a hotspot - session pooling etc
Date Tue, 27 Mar 2007 10:06:13 GMT
Hi all,
We're currently CPU profiling an application which uses the SessionInView
pattern to create a new JCR session (with JackRabbit) for each request.

Profiling shows that around:
 - 11.4% of the CPU time is in releaseSession(). In particular around 5% of
this is in ItemManager.evictItem().
 - 0.08% of the CPU time is in getSession()

For each request the application is just reading a set of nodes (upto around
100) to generate a web page. We're using JackRabbit 1.2.1 with Oracle.

Any recommendations for how to resolve this overhead?
 - should we consider pooling sessions?
 - any way to optimise the session usage given the nodes are all read-only?

All help appreciated.
Regards,
Shaun.


		
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