Here's the code I used to confirm Henrik's math:
table := Unicode classPool at: 'GeneralCategory'.
count := table basicSize.
1 to: table basicSize do: [ :i |
(table basicAt: i) isNil ifFalse: [
count := count + (table basicAt: i) basicSize ] ].
(count / 1024) asFloat
-> 66.8759765625
+ the headers of each subtable.
Cheers,
Adrian
On Sep 21, 2010, at 20:16 , Henrik Sperre Johansen wrote:
> On 21.09.2010 20:07, Mariano Martinez Peck wrote:
>>
>>
>> On Tue, Sep 21, 2010 at 7:55 PM, Henrik Sperre Johansen
>> <[email protected] <mailto:[email protected]>> wrote:
>>
>> On 21.09.2010 19:10, Mariano Martinez Peck wrote:
>>
>> Hi folks. I wasn't aware of the class SparseLargeTable but it
>> seems it has two important instances "SparseLargeTable
>> allInstances size -> 2"
>>
>> They are the class side variables #DecimalProperty and
>> #GeneralCategory in Unicode.
>>
>> Actually,
>>
>> (Unicode classPool at: 'GeneralCategory') size -> 917632
>>
>> (Unicode classPool at: 'DecimalProperty') size -> 917632
>>
>> So...collections of almost 1 million elements.
>>
>> Now a couple of questions:
>>
>> 1) Is this normal/expected? In my calculus both arrays are
>> like 3mb of memory
>>
>> Look at the implementation, there's a reason they're called sparse.
>> If my math is correct (crosses fingers), DecimalProperty is ~15KB,
>> GeneralCategory ~70KB
>>
>>
>> So...there must be a problem with my code, I was doing something like
>> SpaceTally does:
>>
>>
>> spaceForUsedInstancesOf: aClass withInstanceCount: instCount
>> "Answer the number of bytes consumed by all instances of the given class,
>> including their object headers."
>>
>> | isCompact instVarBytes bytesPerElement headerBytes total |
>> instCount = 0 ifTrue: [^ 0].
>> isCompact := aClass indexIfCompact > 0.
>> instVarBytes := aClass instSize * 4.
>> aClass isVariable
>> ifTrue: [
>> bytesPerElement := aClass isBytes ifTrue: [1] ifFalse: [4].
>> total := 0.
>> aClass allInstancesDo: [:inst | | contentBytes |
>> contentBytes := instVarBytes + (inst *size* *
>> bytesPerElement).
> There you go. Use basicSize, size is overridden by f.ex. HashedCollections
> and LargeSparseTables.
>
> Cheers,
> Henry
> _______________________________________________
> Pharo-project mailing list
> [email protected]
> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project
_______________________________________________
Pharo-project mailing list
[email protected]
http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project
