[infinispan-dev] running test suite with JBossTM vs DummyTM

[Mircea Markus]

On 25 Jan 2011, at 17:12, Manik Surtani wrote:
> How's this for a solution:
> 
> 1)  Test suite remains the same
I don't think performance is affected by using JBossTM for test runs, I'll need to check by running it
> 2)  Running tests locally remains the same (using the DummyTM)
Is there any advantage in doing that besides being able to run tests more quickly? :-)
> 3)  Our Hudson environment runs the testsuite with the -Dinfinispan.tm=jbosstm parameter.  
> 
> This way, at least our CI builds will use a *real* TM.  If we find failures on Hudson that we want to debug locally, we add -Dinfinispan.tm=jbosstm parameter.   to any local run we want to trace.
> 
> Thoughts?
My concern is that we'll have to enhance DummyTM to be "more" compliant with the jta spec. As long as that's not going to happen I'm fine with using it for local test. IMO no point spending effort enhancing DummyTM.
> 
> Cheers
> Manik
> 
> On 24 Jan 2011, at 16:50, Mircea Markus wrote:
> 
>> On 24 Jan 2011, at 16:34, Sanne Grinovero wrote:
>>> Seems a good idea, but it's also nice if we can keep the testsuite
>>> quick to run;
>> The performance difference would result from TM doing write on the disk during 2PC prepare( I think it's after the prepare phase). This only happens if we run distributed transactions tough (i.e. more than one participant), otherwise the TM would optimise the call for a single resource and no disk access takes place. 
>> Even more, AFAIK this can be disabled not to do disk access ( keep tx log in memory). 
>> So I estimate the performance should be about the same.
>> 
>> 
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> 
> --
> Manik Surtani
> manik at jboss.org
> twitter.com/maniksurtani
> 
> Lead, Infinispan
> http://www.infinispan.org
> 
> 
> 
> 
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