On Mar 13, 2007, at 1:24 AM, Weldon Washburn wrote:
On 3/2/07, Geir Magnusson Jr. <[EMAIL PROTECTED]> 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.
Geir as the say in Apache-land, "thank you for volunteering". I
have looked
and satisfied my own curiosity. It would be great if you do the
same and
report back.
Why don't you tell us what you found? Do you understand what the
problem is beyond some unknown bugs?
I can also tell you that they are being cause by unknown bugs.
Nothing scares me more than sweeping unaccountable failures under the
rug.
Geir, with all due respect these are the kinds of problems one
observes with
early stage systems software. DRLVM is a construction zone. Its
unreasonable to expect to fix roofing problems when we are still
working on
the foundation.
Do you really think that core synchronization issues are the
construction-equivalent to hanging curtains or choosing floor tiles?
I don't.
I think that this kind of thing is core to the foundation. Better
done earlier than later.
geir
Believe me, even if it the problem where "swept under the
rug", it will come bouncing back when we try to run advanced
workloads.
Nothing is being hidden here. If you want to follow where the
threading
focus is right now, take a look at H3288 and H3289.
geir
--
Weldon Washburn
Intel Enterprise Solutions Software Division
