Re: CPU usage

[Fournier Eric]

This ongoing problem occurs on the Mac similarly to Windows. I have  
been developing in the "Tweak Project Window" because of it (which  
behaves just fine, CPU wise). For my deployment scheme for Hermes, I  
really want to remove the CProjectBuilder's Morphic window frame and  
let Tweak take over the entire field-of-vision.

Some testing shows that the loop (I'm assuming that's the culprit  
since I don't see similar behavior in the Tweak Project Window) can  
freeze foreground at sporadic intervals (testing continues).

I see this one is not in Mantis, but I'm not sure if it is a Tweak  
(or Squeak) issue (is Morphic mad to be shoved aside so completely? ;-).

Anreas Raab wrote:

> Good question. I'll check it out, thanks for reporting.
>
> Cheers,
>    - Andreas
>
> Vaidotas Didžbalis wrote:
> > Hello,Entering newly created empty "Tweak project", windows xp  
> task managershows CPU usage 100% and
> stays that way. Why?VM 3.71, image 3.6662.image, all Tweak updates  
> loaded.
> >
> > -- Vaidotas Didžbalis
> > _______________________________________________
> > Tweak mailing list
> > Tweak@...
> > http://impara.de/mailman/listinfo/tweak
> >
> >

Eric Fournier
University of Minnesota
Office of Information Technology
emf@...



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[Steven W Riggins]

I see my CPU jump from 17% to over 40% by opened a Tweak Project Window.

On Jan 13, 2006, at 8:27 AM, Fournier Eric wrote:

> This ongoing problem occurs on the Mac similarly to Windows. I have  
> been developing in the "Tweak Project Window" because of it (which  
> behaves just fine, CPU wise). For my deployment scheme for Hermes,  
> I really want to remove the CProjectBuilder's Morphic window frame  
> and let Tweak take over the entire field-of-vision.
>
> Some testing shows that the loop (I'm assuming that's the culprit  
> since I don't see similar behavior in the Tweak Project Window) can  
> freeze foreground at sporadic intervals (testing continues).
>
> I see this one is not in Mantis, but I'm not sure if it is a Tweak  
> (or Squeak) issue (is Morphic mad to be shoved aside so  
> completely? ;-).
>
> Anreas Raab wrote:
>> Good question. I'll check it out, thanks for reporting.
>>
>> Cheers,
>>    - Andreas
>>
>> Vaidotas Didžbalis wrote:
>> > Hello,Entering newly created empty "Tweak project", windows xp  
>> task managershows CPU usage 100% and
>> stays that way. Why?VM 3.71, image 3.6662.image, all Tweak updates  
>> loaded.
>> >
>> > -- Vaidotas Didžbalis
>> > _______________________________________________
>> > Tweak mailing list
>> > Tweak@...
>> > http://impara.de/mailman/listinfo/tweak
>> >
>> >
>
> Eric Fournier
> University of Minnesota
> Office of Information Technology
> emf@...
>
>
>
> _______________________________________________
> Tweak mailing list
> Tweak@...
> http://impara.de/mailman/listinfo/tweak
>

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[Fournier Eric]

The complaint here is about how CPU utilization pegs when a Tweak  
Project is opened vis-a-vis a Tweak Project Window. Sure, CPU  
utilization will spike in TPW when you move the mouse around, do  
things. But it settles when the inputs are idle (it does on my 1.25  
GHz Powerbook anyway). Not the case with TP: utilization goes to the  
peg and stays there (on Mac OS X and Windows XP) all the time.

-- Eric



On Jan 13, 2006, at 11:06 AM, Steven Riggins wrote:

> I see my CPU jump from 17% to over 40% by opened a Tweak Project  
> Window.
>
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[Bert Freudenberg-3]

Am 13.01.2006 um 18:20 schrieb Fournier Eric:

> The complaint here is about how CPU utilization pegs when a Tweak  
> Project is opened vis-a-vis a Tweak Project Window. Sure, CPU  
> utilization will spike in TPW when you move the mouse around, do  
> things. But it settles when the inputs are idle (it does on my 1.25  
> GHz Powerbook anyway). Not the case with TP: utilization goes to  
> the peg and stays there (on Mac OS X and Windows XP) all the time.

The Morphic main-loop gives up time to the OS if there isn't much to  
do. CTweakProjectInMorphic>>run: doesn't. But it could:

run
        | lastCycleTime pause currentTime wait |
        lastCycleTime := Time millisecondClockValue.
        pause := 50.
        island project canvas: (CTransformCanvas on: Display).
        island project world extent: Display extent.
        [done] whileFalse:[
                self checkForNewScreenSize.
                island scheduler run.

                currentTime := Time millisecondClockValue.
                wait := lastCycleTime + pause - currentTime.
                (wait > 0 and: [ wait <= pause ])
                        ifTrue: [ (Delay forMilliseconds: wait) wait ].
                lastCycleTime := currentTime.
        ].

        uiProcess == Processor activeProcess ifTrue:[uiProcess := nil].


- Bert -

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[Fournier Eric]

Nice. I had to change the order (it refused to return to morphic if  
the delay came after island>>scheduler>>run).

Thanks a bunch Bert!

-- Eric



On Jan 13, 2006, at 11:55 AM, Bert Freudenberg wrote:

>
> The Morphic main-loop gives up time to the OS if there isn't much  
> to do. CTweakProjectInMorphic>>run: doesn't. But it could:
>
> run
> | lastCycleTime pause currentTime wait |
> lastCycleTime := Time millisecondClockValue.
> pause := 50.
> island project canvas: (CTransformCanvas on: Display).
> island project world extent: Display extent.
> [done] whileFalse:[
> self checkForNewScreenSize.
> island scheduler run.
>
> currentTime := Time millisecondClockValue.
> wait := lastCycleTime + pause - currentTime.
> (wait > 0 and: [ wait <= pause ])
> ifTrue: [ (Delay forMilliseconds: wait) wait ].
> lastCycleTime := currentTime.
> ].
>
> uiProcess == Processor activeProcess ifTrue:[uiProcess := nil].
>
>
> - Bert -
>
> _______________________________________________
> Tweak mailing list
> Tweak@...
> http://impara.de/mailman/listinfo/tweak

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[Fournier Eric]

The order is likely a red herring and does not matter. Successful  
return to morphic from Tweak Project is about 25%, with 75% attempts  
ending in complete Tweak hang.

--Eric


On Jan 13, 2006, at 3:06 PM, Fournier Eric wrote:

> Nice. I had to change the order (it refused to return to morphic if  
> the delay came after island>>scheduler>>run).
>
> Thanks a bunch Bert!
>
> -- Eric
>
>
>
> On Jan 13, 2006, at 11:55 AM, Bert Freudenberg wrote:
>
>>
>> The Morphic main-loop gives up time to the OS if there isn't much  
>> to do. CTweakProjectInMorphic>>run: doesn't. But it could:
>>
>> run
>> | lastCycleTime pause currentTime wait |
>> lastCycleTime := Time millisecondClockValue.
>> pause := 50.
>> island project canvas: (CTransformCanvas on: Display).
>> island project world extent: Display extent.
>> [done] whileFalse:[
>> self checkForNewScreenSize.
>> island scheduler run.
>>
>> currentTime := Time millisecondClockValue.
>> wait := lastCycleTime + pause - currentTime.
>> (wait > 0 and: [ wait <= pause ])
>> ifTrue: [ (Delay forMilliseconds: wait) wait ].
>> lastCycleTime := currentTime.
>> ].
>>
>> uiProcess == Processor activeProcess ifTrue:[uiProcess := nil].
>>
>>
>> - Bert -
>>
>> _______________________________________________
>> Tweak mailing list
>> Tweak@...
>> http://impara.de/mailman/listinfo/tweak
>
> _______________________________________________
> Tweak mailing list
> Tweak@...
> http://impara.de/mailman/listinfo/tweak

Eric Fournier
Java and Web Services
University of Minnesota Office of Information Technology
190 Shepherd Labs

emf@...


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