[Etoys] Rehashing saves 600 KB

[Andreas Raab]

Sure:

(Set allSubInstances collect:[:set|
	set capacity - (Set sizeFor: set size) -> set
]) asArray sort reversed

This will tell you how many elements you regain for each set used. Then 
use "chase pointers" to identify them. In my system I get 50% of the 
overall improvement out of two sets (the symbol table and 
MCDefinition::Instances).

Cheers,
   - Andreas

Bert Freudenberg wrote:
> You know which? Or how to find them - ratio of capacity to size?
> 
> - Bert -
> 
> 
> On Apr 12, 2007, at 18:44 , Andreas Raab wrote:
> 
>> In my experience 90% of the effect come from a dozen or so of sets. It 
>> might be safer to rehash those explicitly.
>>
>> Cheers,
>>   - Andreas
>>
>> Bert Freudenberg wrote:
>>> Hi folks,
>>> Marcus Denker pointed out that rehashing reduces the image size 
>>> quite  a bit. I did
>>>     Set rehashAllSets
>>> and the saved image indeed is 650 KB smaller.
>>> Can anyone think of a reason not to do this? Maybe there are some  
>>> Sets/Dictionaries intentionally made larger than necessary for speed  
>>> reasons?
>>> - Bert -
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> 
> 
> 
>