2010/10/18 Igor Stasenko <[email protected]>:
> On 18 October 2010 23:18, Nicolas Cellier
> <[email protected]> wrote:
>> 2010/10/17 Levente Uzonyi <[email protected]>:
>>> On Sat, 16 Oct 2010, Bart Veenstra wrote:
>>>
>>>> Hi list,
>>>>
>>>> I have been working with Pharo for almost a month now, and I suspect
>>>> that the performance is degrading fast. UI tasks takes several seconds
>>>> to react to my keyboard.
>>>
>>> That kind of sluggishness is probably related to finalization/gc. Please
>>> send us the result of the following expression:
>>>
>>> (WeakArray classPool at: #FinalizationDependents)
>>> select: [ :each | each notNil ]
>>> thenCollect: [ :each | each class -> each size ]
>>>
>>
>> While updating pharo 1.2, after an EndOfCentralDirectory error, I got
>> a very unresponsive image...
>>
>> ((WeakArray classPool at: #FinalizationDependents) as: Array)
>> select: [ :each | each notNil ]
>> thenCollect: [ :each | each class -> each size]
>> ->
>> {(WeakIdentityKeyDictionary->22370).
>
> This is an MC cache. And major reason of image slowdown.
>
Levente did this simplification in trunk:
cachedDefinitions
^definitions ifNil: [ definitions := WeakIdentityKeyDictionary new ]
It would be worth a try in Pharo.
Nicolas
>> (WeakRegistry->0).
>> (WeakRegistry->0). (WeakRegistry->0). (WeakRegistry->2)}
>>
>> I tried to inspect it 5 minutes ago, but hey, answer in another email...
>> Ah, OK, cmd+shift+. just worked. I had to interrupt
>> #finalizationProcess itself finally...
>> Oh inspect is sorting the keys... unusable.
>> So what's in the array ? Things like
>>
>> (ScriptLoader>>#update12125 "a CompiledMethod(0)")->a
>> MCMethodDefinition(ScriptLoader>>update12125)
>> (PragmaCollector>>#release "a CompiledMethod(964689920)")->a
>> MCMethodDefinition(PragmaCollector>>release)
>> (Float>>#arcSin "a CompiledMethod(358088704)")->a
>> MCMethodDefinition(Float>>arcSin)
>>
>> I don't understand yet, but I begin to gather clues why updating pharo
>> goes so badly...
>>
>> Nicolas
>>
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>>
>
>
>
> --
> Best regards,
> Igor Stasenko AKA sig.
>
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