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From Naveen Neelakantam <neela...@uiuc.edu>
Subject Re: [drlvm] Fwd: [jira] Updated: (HARMONY-2803) stress.Mix hangs on RHEL4 update 4
Date Sun, 11 Mar 2007 07:30:33 GMT

On Mar 2, 2007, at 12:43 PM, Geir Magnusson Jr. wrote:

>
> 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 rug.

Thankfully, the patches from HARMONY-2982 resolved the remaining issues.

>
> geir
>


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