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From "Geir Magnusson Jr." <g...@pobox.com>
Subject Re: [drlvm] Fwd: [jira] Updated: (HARMONY-2803) stress.Mix hangs on RHEL4 update 4
Date Fri, 02 Mar 2007 18:43:21 GMT

On Feb 28, 2007, at 3:25 PM, Naveen Neelakantam wrote:

> On Feb 28, 2007, at 3:40 PM, Weldon Washburn wrote:
>> Naveen,
>> 1)
>> I tried Mix.java.load.patch on my 2-way Linux box.  It hangs  
>> consistently.
>> 2)
>> I tried the svn HEAD version of Mix.java.  I can't get it to  
>> fail.  Can you
>> do an "svn update" and see if the baseline Mix.java causes your  
>> regression
>> tests to hang?
> I used "repeat 100 java -cp . stress.Mix" and the test still hangs  
> for me.
>> My guess is that Mix.java.load.patch is somehow triggering  
>> classloader/vm
>> synchronization bugs.  I worry that we will spend a bunch of time  
>> fixing
>> legitimate bugs with no specific focus on getting chosen enterprise
>> workloads running.  Unless an enterprise app exhibits a very high  
>> rate of
>> class loading, I'd like to set this bug aside for now.  What do  
>> you think?
> I think you are correct.  We should make sure some app demands high- 
> rate class loading before chasing this bug down.

I don't agree.  I think we should at least understand it (that  
doesn't mean fix it if it's hard), but understand why it's  
happening.  Even a good faith "I'll spend 2 days trying to figure  
this out, but no more" might well be worth it.

Nothing scares me more than sweeping unaccountable failures under the  


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