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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 Mon, 26 Feb 2007 04:32:25 GMT
I tried running the test with only 1 thread and it doesn't hang (I  
even upped the "period" variable in Mix.java to stress further class  
loading), so I believe that threading/synchronization is at least  
involved.

I also tried running the test on a single CPU box and it hangs there  
too.

Strangely enough, I tried increasing the number of threads spawned to  
1000 and the test no longer seems to hang.

Naveen

On Feb 25, 2007, at 9:04 PM, Weldon Washburn wrote:

> Naveen,
>
> I looked at your Mix.java.load.patch and have some  questions.  Do  
> you know
> if the problems you are observing are related to the repetitive class
> loading or to basic threading/sync problems?  Or something completely
> different??
>
>    Thanks
>         Weldon
>
> On 2/23/07, Naveen Neelakantam <neelakan@uiuc.edu> wrote:
>>
>> FYI, stress.Mix is still hanging for me.  It looks like there is
>> another issue (i.e. patch from HARMONY-2963 does not completely solve
>> this issue).
>>
>> Naveen
>>
>> Begin forwarded message:
>>
>> > From: "Naveen Neelakantam (JIRA)" <jira@apache.org>
>> > Date: February 23, 2007 6:36:05 PM CST
>> > To: neelakan@uiuc.edu
>> > Subject: [jira] Updated: (HARMONY-2803) stress.Mix hangs on RHEL4
>> > update 4
>> >
>> >
>> >      [ https://issues.apache.org/jira/browse/HARMONY-2803?
>> > page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
>> >
>> > Naveen Neelakantam updated HARMONY-2803:
>> > ----------------------------------------
>> >
>> >     Attachment: Mix.java.load.patch
>> >
>> > I took a play out of the Washburn playbook:
>> >
>> > The issue can be reproduces by patching Mix.java so that it only
>> > "load"s.  The attached patch (Mix.java.load.patch) does the trick.
>> >
>> > the patched stress.Mix will still only hang intermittently.
>> >
>> >> stress.Mix hangs on RHEL4 update 4
>> >> ----------------------------------
>> >>
>> >>                 Key: HARMONY-2803
>> >>                 URL: https://issues.apache.org/jira/browse/
>> >> HARMONY-2803
>> >>             Project: Harmony
>> >>          Issue Type: Bug
>> >>          Components: build - test - ci
>> >>         Environment: RHEL4 update 4, gcc 3.4.6, core2 (i386)
>> >>            Reporter: Naveen Neelakantam
>> >>         Assigned To: weldon washburn
>> >>            Priority: Critical
>> >>         Attachments: MegaSpawn.java, Mix.java.load.patch
>> >>
>> >>
>> >> This test consistently hangs on RHEL4 update 4 for i386.  It has
>> >> been preventing Cruise Control from making any progress.
>> >
>> > --
>> > This message is automatically generated by JIRA.
>> > -
>> > You can reply to this email to add a comment to the issue online.
>> >
>>
>>
>
>
> -- 
> Weldon Washburn
> Intel Enterprise Solutions Software Division


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