nice wrote:
> Even a simple
> 
>     MessageTally spyOn: [Transcript cr; show:'hello'].
> 
> exhibits a factor 2x slowdown between 3.8 and 3.10
> 
> Nicolas
> 

And the main difference lies in the drawing of the container, not the 
contents as you can test it:

Smalltalk garbageCollect.
theTranscriptWindow := SystemWindow allInstances detect: [:e | e label = 
'Transcript']. "(I know, bad code, but cannot remember correct API)"

Time millisecondsToRun: [theTranscriptWindow drawDropShadowOn: World 
canvas].
	=> 4 36
Time millisecondsToRun: [World canvas drawMorph: theTranscriptWindow ].
	=> 4 21
Time millisecondsToRun: [theTranscriptWindow drawSubmorphsOn: World canvas].
	=> 18 11

Scores are given in 3.8 and 3.9/3.10 (where they are dependent on 
theTranscriptWindow bounds extent).
Notice the transparency and background gradient in 3.9/3.10...

Don't know how this connects to number of opened Browsers seriously 
impacting speed, but maybe that's a clue...

Nicolas

> 
> Matthias Berth wrote:
>> Hello,
>>
>>
>> can anyone tell me were to find the earliest available 3.9 alpha image?
>>
>> I want to identify the cause of the slowdown of browsers when you have
>> many of them opened.
>>
>>   
>> http://article.gmane.org/gmane.comp.lang.smalltalk.squeak.general/108359
>>
>> I am using the benchmark from Andreas. So far I see the problem in the
>> current squeak-dev 3.9.1, Squeak3.9b-7029.image. Browser speed is OK
>> in Squeak3.8-6665.image (Squeak3.8-6665-basic.zip).
>>
>> Cheers
>>
>> Matthias
>>