On Tue, 13 Jul 2010, Rob Withers wrote:

> --------------------------------------------------
> From: "Levente Uzonyi" <leves at elte.hu>
> Sent: Tuesday, July 13, 2010 12:46 PM
> To: "The general-purpose Squeak developers list" 
> <squeak-dev at lists.squeakfoundation.org>
> Subject: Cog on linux (was: Re: [squeak-dev] Re: UI lockup in Squeak 4.1)
>
>> On Tue, 13 Jul 2010, Rob Withers wrote:
>> 
>>> 
>>> --------------------------------------------------
>>> From: "Andreas Raab" <andreas.raab at gmx.de>
>>> Sent: Tuesday, July 13, 2010 11:29 AM
>>> To: "The general-purpose Squeak developers list" 
>>> <squeak-dev at lists.squeakfoundation.org>
>>> Subject: [squeak-dev] Re: UI lockup in Squeak 4.1
>>> 
>>>> On 7/13/2010 6:39 AM, Rob Withers wrote:
>>>>> The low-space watcher is running, at least before the problem starts. I
>>>>> do eventually run out of memory, but the uninterruptable state happens
>>>>> before this.
>>>> 
>>>> In which case you want to do the following:
>>>> * Launch your app and wait until it's in the "growing state"
>>>> * Hit F2 and from the VM's preference menu choose "Debug" and then "Print 
>>>> all processes"
>>>> 
>>>> This will dump a list of all the call stacks of all processes. One of 
>>>> them is the culprit consuming memory and you'll probably be able to tell 
>>>> quickly from just looking at it (if not, you can email the output here 
>>>> but it typically takes a domain expert to understand what's going wrong).
>>>> 
>>> 
>>> Thanks for this pointer, Andreas.
>>> 
>>> This time it was a Cog VM which spasmed, which I use for my client (Squeak 
>>> 4.1 for server for use with linux vm - I have no ability to compile a 
>>> linux Cog vm:  would love if someone posted one that could be launched 
>>> headless for my webhost).
>> 
>> Cog works, but i think you're trying to use the -headless switch, which (is 
>> deprecated) and tells the vm to use the X11 display, but with no window. 
>> Servers usually don't have X11, so it won't work. You better use 
>> -vm-display-null (and -vm-sound-null). Try squeak --help for further useful 
>> options (like tuning Cog).
>> 
>
> I am trying to use the -headless switch.  Good to know it is deprecated.  So 
> you happen to have a Cog for linux binary (version 17 - 20), which I could 
> use?

I have one, but I'm not sure it will work on your server. You can find it 
here: http://leves.web.elte.hu/squeak/cog17.tar.gz . It's built on ubuntu 
10.04 and is optimized for core2.


Levente

>
> Thanks,
> Rob
>
>> 
>> Levente
>> 
>>> 
>>> It started running at 100% and I did your F2 -> Debug Options -> Print all 
>>> processes.  It started dumping a LOT to the Debug Console, then it froze, 
>>> still at 100%, but no increase in memory now and it went (Not Responding) 
>>> and greyed out the window.
>>> 
>>> Luckily, I was able to see enough of the stack that was causing problems. 
>>> It is infinitely looping in this method:
>>> 
>>> LanguageEnvironment class>>#localeID: localeID
>>> ^self knownEnvironments at: localeID ifAbsent: [self localeID: (LocaleID 
>>> isoLanguage: 'en')]
>>> 
>>> This has nothing to do with my code, except I must be calling something 
>>> that enters this loop.  It happens in both Cog (Windows) and Squeak4.1 
>>> (Linux <headless> and Windows).
>>> 
>>> Not sure how to fix this.
>>> 
>>> Rob
>>> 
>>>> Cheers,
>>>>   - Andreas
>>>> 
>>> 
>>> 
>> 
>
>