Hi guys,
Just reran a set of startup performance tests, to see if something has changed or I would be able to point out some new places
to put in some speedups. Unfortunately (or as expected) not much has changed.
The same pattern always emerge on startup performance:
#1. xml reading is 40-60% if one doesnt use the serialized version...so use addCachableFile() to do an EASY performance boost!
#2. FastClass creation takes 23% (when using serialized xml files). After looking at the source I could see that fastclass is ONLY
needed when the cglib optimizer is used, so I removed creation of fastClass'es.
The "funny" thing is that I don't think it makes any difference since after removing this ClassLoader and normal reflection popped up as using approximate the same time. (hinting that FastClass just triggered that in a different way). So disabling cglib optimizer might not give that much of a boost..my emperi hints it's <5%)
#3. After #1 & #2 the biggest time-stealer is reflection and classloading. (nothing much to do about this except not adding classes not needed to the configuration)
So, caching the classes generated by cglib I do not think will matter much since it will be replaced with classloading.
The next step I see is lazy creation of EntityPersisters and/or trying to serialize the actual SessionFactory (but that is a tough one - since to alloew deserializing parts of the persisters, loaders, caches etc. need access to stuff only available in SessionFactory which they don't all have access to)
-- Max Rydahl Andersen callto://max.rydahl.andersen
Hibernate [EMAIL PROTECTED] http://hibernate.org
JBoss Inc [EMAIL PROTECTED] http://jboss.com
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