Having tried it both ways, the rollback is "a must."  There is probably an 
argument that the updated image dos a little better with it than does my 10303 
image, but both benefit when the rollback is applied.

As I said early, give me about a month, and I will happily wire up something 
slow to help test this.

Bill




-----Original Message-----
From: [email protected] 
[mailto:[email protected]] On Behalf Of Stéphane 
Ducasse
Sent: Thursday, May 28, 2009 4:56 AM
To: [email protected]
Subject: Re: [Pharo-project] Issue 832

Yes thanks for checking.
I would really like that we understand the problem

On my machine I noticed no slowdown.

Stef

On May 28, 2009, at 11:46 AM, Henrik Johansen wrote:

> Sure.
> I'd wait applying it till others can confirm that simply saving after 
> running an update does not fix their performance problems though, as 
> outlined in my last mail.
>
> Cheers,
> Henry
>
> Stéphane Ducasse skrev:
>> can you send me the st for the reverting?
>>
>> Stef
>>
>> On May 28, 2009, at 10:08 AM, Henrik Johansen wrote:
>>
>>
>>> It's strange though, for me dragging is just as slow reverting the 
>>> changes I made in a 319 image...
>>> And filing in the .st in a 309 image, I notice no slow downs. (309 
>>> upgraded to 319 I do).
>>>
>>> Are we sure nothing else causes this, perhaps changes related to 
>>> events/polling frequency or something?
>>>
>>> Cheers,
>>> Henry
>>>
>>> Schwab,Wilhelm K skrev:
>>>
>>>> Henry,
>>>>
>>>> I for one appreciate your effort, and encourage you to keep going.
>>>> Speaking of slow machines, I have a small herd and would be willing 
>>>> to help you profile the problem.  Give me about a month, and I will 
>>>> be in a position to press them into service to help with this.
>>>>
>>>> Bill
>>>>
>>>>
>>>> -------------------------------------------------------------------
>>>> -----
>>>> *From:* [email protected]
>>>> [mailto:[email protected]] *On Behalf Of 
>>>> *Henrik Sperre Johansen
>>>> *Sent:* Wednesday, May 27, 2009 5:07 PM
>>>> *To:* [email protected]
>>>> *Subject:* Re: [Pharo-project] Issue 832
>>>>
>>>> Sorry, just back from the pub (YAY BARCELONA!)  my initial reaction 
>>>> was really:
>>>> I'd rather see the cause of such slowdowns while resizing 
>>>> investigated (and fixed), but considering the time needed to 
>>>> accomplish that, rollbacking is probably a safer option at this 
>>>> time.
>>>> My mind absolutely boggles that a resizing performance decrease 
>>>> would be the most visible effect of the changes made in that 
>>>> update...
>>>> Welcome to the wonderful world of Morphic!
>>>>
>>>> Cheers,
>>>> Henry
>>>>
>>>> On 27.05.2009 23:54, Henrik Sperre Johansen wrote:
>>>>
>>>>> Yes, rollbacking probably is the safest choice, As I implied in 
>>>>> the mail, this was really meant as a experimental effort, to see 
>>>>> if people on slower machines noticed the effects I was 
>>>>> (pre)anticipating.
>>>>> I really don't see how an extra intersect: per Morph (containing
>>>>> submorphs) can make such a big difference...
>>>>>
>>>>> I'll definately post another update sometime in the future, I 
>>>>> don't know when I'll have to look into it though.
>>>>> <rant>
>>>>> To me, the way it is right now seems unacceptable, there's really 
>>>>> no reason to write a "smart" drawOn: routine for morphs that are 
>>>>> likely to end up as a subMorph (saaaay, the TextMorph which I 
>>>>> started investigating in the first place), as they have to redraw 
>>>>> the entire area anyways.
>>>>> This leads to a bad cycle in morph development; "As long as at 
>>>>> minimum the area we want to redraw is marked as, it's fine. 
>>>>> There's no performance gain from reporting a more accurate area 
>>>>> anyways".
>>>>> So you end up with "sloppy" damage rects for new morphs, which 
>>>>> leads to more to fix if it IS changed, and slower performance for 
>>>>> those whom redrawing the entire area rather than a subsection IS 
>>>>> expensive.
>>>>> </rant>
>>>>>
>>>>> Cheers,
>>>>> Henry
>>>>>
>>>>>
>>>>> On 27.05.2009 19:44, Stéphane Ducasse wrote:
>>>>>
>>>>>> Thanks for reporting.
>>>>>> Henrik?
>>>>>> I could rollback the changes.
>>>>>>
>>>>>> Stef
>>>>>>
>>>>>> On May 27, 2009, at 6:25 PM, Gary Chambers wrote:
>>>>>>
>>>>>>
>>>>>>
>>>>>>> Performance of UI seems poor after 832 integration.
>>>>>>>
>>>>>>> http://code.google.com/p/pharo/issues/detail?id=832
>>>>>>>
>>>>>>> Regards, Gary
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> Pharo-project mailing list
>>>>>>> [email protected]
>>>>>>> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-
>>>>>>> project
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>> _______________________________________________
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>>>>>> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-proje
>>>>>> ct
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>> ------------------------------------------------------------------
>>>>> ------
>>>>>
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>>>>> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-
>>>>> project
>>>>>
>>>> -------------------------------------------------------------------
>>>> -----
>>>>
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>>
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>>
> 'From Pharo0.1 of 16 May 2008 [Latest update: #10309] on 28 May 2009 
> at 11:39:22 am'!
>
> !Morph methodsFor: 'drawing' stamp: 'dgd 2/22/2003 14:31'!
> drawSubmorphsOn: aCanvas
>       "Display submorphs back to front"
>
>       | drawBlock |
>       submorphs isEmpty ifTrue: [^self].
>       drawBlock := [:canvas | submorphs reverseDo: [:m | canvas
> fullDrawMorph: m]].
>       self clipSubmorphs
>               ifTrue: [aCanvas clipBy: self clippingBounds during: drawBlock]
>               ifFalse: [drawBlock value: aCanvas]! !
>
>
> !LazyMorphListMorph methodsFor: 'as yet unclassified' stamp: 'gvc  
> 5/3/2006 14:27'!
> drawSubmorphsOn: aCanvas
>       "Display submorphs back to front"
>
>       |drawBlock i|
>       submorphs isEmpty ifTrue: [^self].
>       drawBlock := [:canvas |
>               (self topVisibleRowForCanvas: aCanvas) to: (self  
> bottomVisibleRowForCanvas: aCanvas) do: [ :row |
>                       i := self item: row.
>                       canvas fullDrawMorph: i]].
>       self clipSubmorphs
>               ifTrue: [aCanvas clipBy: self clippingBounds during: drawBlock]
>               ifFalse: [drawBlock value: aCanvas]! !
>
>
> !PasteUpMorph methodsFor: 'painting' stamp: 'nk 7/4/2003 15:59'!
> drawSubmorphsOn: aCanvas
>       "Display submorphs back to front, but skip my background sketch."
>
>       | drawBlock |
>       submorphs isEmpty ifTrue: [^self].
>       drawBlock := [:canvas | submorphs reverseDo: [:m | m ~~  
> backgroundMorph ifTrue: [ canvas fullDrawMorph: m ]]].
>       self clipSubmorphs
>               ifTrue: [aCanvas clipBy: self clippingBounds during: drawBlock]
>               ifFalse: [drawBlock value: aCanvas]! !
>
>
> !TabSelectorMorph methodsFor: 'as yet unclassified' stamp: 'gvc  
> 5/31/2007 14:11'!
> drawSubmorphsOn: aCanvas
>       "Display submorphs back to front.
>       Draw the focus here since we are using inset bounds
>       for the focus rectangle."
>
>       super drawSubmorphsOn: aCanvas.
>       self hasKeyboardFocus ifTrue: [
>               self selectedTab ifNotNilDo: [:t |
>                       self clipSubmorphs
>                               ifTrue: [aCanvas
>                                                       clipBy: self 
> clippingBounds
>                                                       during: [:c | t 
> drawKeyboardFocusOn: c]]
>                               ifFalse: [t drawKeyboardFocusOn: aCanvas]]]! !
>
>
> _______________________________________________
> Pharo-project mailing list
> [email protected]
> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project


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