[jboss-dev] Small boottime improvement

[Bill Burke]

Kabir Khan wrote:
> On 11 Feb 2010, at 23:23, Bill Burke wrote:
> 
>> BTW, my guess is that it is file caching.  Good job though!  Almost a 
>> full second shaved off.  Nothing to sneeze about.
>>
>> So what's next for optimization?
> In dependency the things which had the biggest impact were not breaking out of the resolveContexts() loop and that AbstractDependencyItem was calling controller.getContext() three times when a dependency is not there yet.
> 
> For me, profiling the whole app server startup gives too much information and different hotspots don't really stand out that much. I'm creating a series of micro-benchmarks to profile different areas in isolation. Next is trying the different things in jboss-kernel, which is more interesting since it pulls in things like MDR and jboss-reflect. I'll have a look at the ScopeKey lookups I mentioned in http://community.jboss.org/message/525925#525925 today, before trying out other parts of kernel.

You can also filter per package/class within jprofiler.  IMO, removing 
everything in deploy/ is a good place to profile.  Then stuff like 
deployers, beans, jars, really shows up.

Bill

-- 
Bill Burke
JBoss, a division of Red Hat
http://bill.burkecentral.com