[Pharo-dev] How do diagnose image locks up (cpu 100%) on save?

Paul DeBruicker pdebruic at gmail.com
Thu Aug 22 14:19:59 EDT 2013


In this instance, that doesn't output anything.  Specifically:


$  ps -A | grep pharo
 6001 pts/0    00:00:45 pharo
$ kill -s SIGUSR1 6001
$









Mariano Martinez Peck wrote
> If you run the VM from command line and you send a kill -s SIGUSR1  ... it
> should display the stacktrace of the VM in the console.
> See http://marianopeck.wordpress.com/2012/05/19/pharo-tips-and-tricks/
> item "Send kill signal:"
> 
> hope this help.
> 
> Cheers,
> 
> 
> 
> On Thu, Aug 22, 2013 at 2:34 PM, Paul DeBruicker <

> pdebruic@

> > wrote:
> 
>> Hi -
>>
>> The plain Pharo 20619 + RFB image in my dropbox here:
>> https://dl.dropboxusercontent.com/u/4460862/pharo2RFB.zip freezes when
>> you save it while the RFB server is running.  The freeze occurs in the
>> #snapshotPrimitive.
>>
>>
>> This is the VM info I'm using:
>>
>> 3.9-7 #1 Wed Mar 13 18:22:44 CET 2013 gcc 4.4.3
>> NBCoInterpreter NativeBoost-CogPlugin-EstebanLorenzano.18 uuid:
>> a53445f9-c0c0-4015-97a3-be7db8d9ed6b Mar 13 2013
>> NBCogit NativeBoost-CogPlugin-EstebanLorenzano.18 uuid:
>> a53445f9-c0c0-4015-97a3-be7db8d9ed6b Mar 13 2013
>> git://gitorious.org/cogvm/blessed.git Commit:
>> 412abef33cbed05cf1d75329e451d71c0c6aa5a7 Date: 2013-03-13 17:48:50 +0100
>> By: Esteban Lorenzano <

> estebanlm@

> > Jenkins build #14535
>> Linux linux-ubuntu-10 2.6.32-38-server #83-Ubuntu SMP Wed Jan 4 11:26:59
>> UTC 2012 x86_64 GNU/Linux
>> plugin path: /home/paul/pharo/pharo2.0/bin [default:
>> /home/paul/pharo/pharo2.0/bin/]
>>
>>
>> How can I diagnose/fix what is going wrong?
>>
>>
>> I'm reluctant to make it stop and start the RFB server through the
>> snapshot because it will kick off all attached clients. Of which there
>> is at most one and its me, so it wouldn't be too bad but its not
>> desirable.
>>
>> It freezes whether there is a client connection or not.
>>
>>
>> Thanks
>>
>> Paul
>>
>>
> 
> 
> -- 
> Mariano
> http://marianopeck.wordpress.com





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