On 18 October 2010 23:18, Nicolas Cellier <nicolas.cellier.aka.nice@gmail.com> wrote:
2010/10/17 Levente Uzonyi <leves@elte.hu>:
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) Â Â Â Â select: [ :each | each notNil ] Â Â Â Â 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) Â Â Â select: [ :each | each notNil ] Â Â Â thenCollect: [ :each | each class -> each size] -> {(WeakIdentityKeyDictionary->22370).
This is an MC cache. And major reason of image slowdown.
(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.