[squeak-dev] error when updating Squeak4.4-12327 to trunk

Frank Shearar frank.shearar at gmail.com
Mon Mar 11 22:32:46 UTC 2013


They are hanging, and I haven't had a chance to run them by hand to
see what's going wrong. It doesn't help that we have potentially three
breaking things on the go right now:
* the Parser issue
* Environments upgrade
* my snafu with deleting/readding classes (unlikely?)

frank

On 11 March 2013 22:10, Nicolas Cellier
<nicolas.cellier.aka.nice at gmail.com> wrote:
> Unfortunately, I can't check, all recent SqueakTrunk CI jobs seem to
> hang (timeout after 15minutes).
> There are quite many tests failing with last Environmental changes
> (AttemptToWriteReadOnlyGlobal), and this might be related.
> Should we increase the timeout, or is it something else that blocks the image?
>
> Nicolas
>
> 2013/3/10 Nicolas Cellier <nicolas.cellier.aka.nice at gmail.com>:
>> I'm not sure exactly how to read the CI results, but I confirm that
>> the update may fail, I experienced two trunk update failure starting
>> at Squeak4.4-12327 on MacOS-X with latest COG VM.
>>
>> So I renewed my fix in Kernel-nice.747, changed updates 222 to 227
>> again, and will wait for the reports...
>>
>> Nicolas
>>
>> 2013/3/10 Frank Shearar <frank.shearar at gmail.com>:
>>> http://build.squeak.org/job/SqueakTrunk-OSX/88/ shows things working,
>>> and the trend shows that the Mac Cog seems to have always been OK.
>>>
>>> http://build.squeak.org/job/SqueakTrunk/212/ shows bad things still
>>> happening with the Parser. If you look at the test history (show test
>>> failures only on http://build.squeak.org/job/SqueakTrunk/) you'll see
>>> this bug's biting hard - all the only-2-failing-test builds exhibit
>>> the behaviour.
>>>
>>> (Why do the tests run at all when it's a failing update? I _think_
>>> that's because the build script is insufficiently suicidal, and ends
>>> up running a TrunkImage from a previous build.)
>>>
>>> frank
>>>
>>> On 10 March 2013 19:10, Nicolas Cellier
>>> <nicolas.cellier.aka.nice at gmail.com> wrote:
>>>> OK, see the VM thread, I now think that problems does not come from
>>>> COG, but from ClassBuilder which in some cases fail to clean a cache
>>>> (primitive 116).
>>>> The problem does not show up in interpreter VM thanks to primitive 119
>>>> (this primitives does not unlink send in cogit).
>>>> I have attempted a ClassBuilder fix and posted new updates from
>>>> nice-222 to cwp-227.
>>>>
>>>> Can I please ask our testers contribution once again?
>>>>
>>>> Nicolas
>>>>
>>>> 2013/3/8 Nicolas Cellier <nicolas.cellier.aka.nice at gmail.com>:
>>>>> 2013/3/8 Bert Freudenberg <bert at freudenbergs.de>:
>>>>>>
>>>>>> On 2013-03-08, at 10:55, Frank Shearar <frank.shearar at gmail.com> wrote:
>>>>>>
>>>>>>> On 7 March 2013 23:25, Frank Shearar <frank.shearar at gmail.com> wrote:
>>>>>>>> On 7 March 2013 23:11, Bert Freudenberg <bert at freudenbergs.de> wrote:
>>>>>>>>> On 2013-03-07, at 23:42, Frank Shearar <frank.shearar at gmail.com> wrote:
>>>>>>>>>
>>>>>>>>>>>> On 6 March 2013 15:59, Ken G. Brown <kbrown at mac.com> wrote:
>>>>>>>>>>>>> Running on COG 2397, and after updating fresh Squeak4.4-12327 Release to
>>>>>>>>>>>>> 12332, updating to Trunk  fails at first attempt in the same place, then by
>>>>>>>>>>>>> abandoning and trying the update again, it apparently completes to 12511.
>>>>>>>>>>>>>
>>>>>>>>>>>>>  Ken G. Brown
>>>>>>>>>>>>>
>>>>>>>>>>>>>> With COG 2678, pretty well the same. First attempt it timed out during
>>>>>>>>>>>>>> the same update-nice-223, then trying again from what had already been
>>>>>>>>>>>>>> loaded, got the following during the same update, during compiling
>>>>>>>>>>>>>> SMLoader-fbs-78 as before:
>>>>>>>>>>
>>>>>>>>>> What I find strange about all this is that we take a 4.4-12327 image
>>>>>>>>>> and whatever the latest Cog is and update it all the way without any
>>>>>>>>>> probems quite a few times a day on the CI server.
>>>>>>>>>>
>>>>>>>>>> frank
>>>>>>>>>
>>>>>>>>> Looks like it's an intermittent problem, unfortunately:
>>>>>>>>>
>>>>>>>>> I just updated the new all-in-one-cog to latest trunk, no problem. This is a 4.4-12327 image with Cog VM 2697.
>>>>>>>>>
>>>>>>>>> I then tried what Ken described: update the fresh image first from the squeak44 stream, then switch to trunk, then update again.
>>>>>>>>>
>>>>>>>>> BOOM. Cog crash. Didn't save the log unfortunately.
>>>>>>>>>
>>>>>>>>> Tried again. Update, switch to trunk, update again. No crash. What?!
>>>>>>>>>
>>>>>>>>> Once more. Update, switch to trunk, update. Crash! See below.
>>>>>>>>>
>>>>>>>>> Tried yet again, with switching to trunk immediately in a fresh image. Crashes, too, same place.
>>>>>>>>>
>>>>>>>>> So it does crash, just not always. But it's been more than 50% in my case.
>>>>>>>>
>>>>>>>> Ah, interesting. The CI jobs, naturally, don't update from squeak44;
>>>>>>>> they switch to trunk and update just like that. Which I would have
>>>>>>>> thought would make no difference...
>>>>>>>
>>>>>>> Actually, I lie. Here's an example of the CI jobs hitting the same
>>>>>>> issue: http://build.squeak.org/job/SqueakTrunk/204/console And further
>>>>>>> if you look at http://build.squeak.org/job/SqueakTrunk/ and choose to
>>>>>>> see the failing tests you'll see times (say around build #184) where
>>>>>>> the test failure count is unusually low. And
>>>>>>> http://build.squeak.org/job/SqueakTrunk/buildTimeTrend shows grey
>>>>>>> streaks where builds die.
>>>>>>
>>>>>> Curious that it still runs the tests at all if the update failed ...
>>>>>>
>>>>>> So Cog crashes, but has someone tried to replicate this on an interpreter?
>>>>>>
>>>>>> - Bert -
>>>>>>
>>>>>
>>>>> I think that the problem comes form COG which tries to use an obsolete
>>>>> method sent AFTER the recompilation of Parser which is not the
>>>>> expected behavior.
>>>>> I have triggered such kind of strange behavior that does not happen on
>>>>> an Interpreter VM, see the thread opened by Jeff Gonis '[Vm-dev] Cog
>>>>> VM Crash on Windows'
>>>>> For me, it must be related to a cache that is not cleaned-up, I don't know why.
>>>>>
>>>>> Nicolas
>>>>
>>>
>


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