[jboss-dev] Object lock contention in JNDI lookup of transaction and proposed change to jndi naming service...

[Anil Saldhana]

Why don't you create a branch for your experiments? When the time comes, 
you can merge.

Scott Marlow wrote:
> Dimitris Andreadis wrote:
>> Please make sure you work on jboss head, Branch_4_2 is frozen right now.
> Now that 4.2 has been released, is 4.2.x a good place to experiment 
> with this change?  I haven't been able to build head for a while.
>
>>
>> Scott Marlow wrote:
>>> Hi,
>>>
>>> A while back I measured the object lock contention in a JBoss AS 
>>> 4.0.4 environment.  I noticed a lot of time spent waiting for the 
>>> internal JNDI collection lock.  I think this is worth creating a 
>>> Jira for and solving with a swego concurrentHashMap based collection 
>>> (or java.util.concurrent when we use java5 as a base).  Of course 
>>> the actual contention is app specific but I started thinking about 
>>> solving it.
>>>
>>> Is this worth pursuing?  I'll create a jira and make code changes 
>>> for it (I might need some help running the J2EE compatibility 
>>> tests).  Clearly, we want to pass the unit tests as well (thats an 
>>> assumed requirement).
>>>
>>> Thoughts?
>>>
>>> Scott
>>> _______________________________________________
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>
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-- 
Anil Saldhana
JBoss Security & Identity Management
http://labs.jboss.com/portal/jbosssecurity/