Running this test with #fixTemps.

 semas := Array new: 10000.
 plist := Array new: 10000.
 1 to: semas size do:[:i| semas at: i put: Semaphore new].
 1 to: plist size-1 do:[:i| plist at: i put: [(semas at: i) wait.
(semas at:i+1) signal] fixTemps fork].
 [semas first signal. semas last wait] timeToRun.

New:
 63
 63
 148
 65
 61

Old:

 94
 27
 92
 22
 22
 23
 23

if we not count a spikes which seems just an intrusion of delays, the
difference about 3 times.
Fantastic results (bytecode interpreted scheduling works 3 times
slower than C code) :)

After changing 2 lines of code (to use #interruptWith: , with no fallbacks)

 50 125 50 49 48 48 60

so, now its about 2 times difference.

2009/4/30 Igor Stasenko <siguctua at gmail.com>:
> 2009/4/30 Andreas Raab <andreas.raab at gmx.de>:
>> Igor Stasenko wrote:
>>>
>>> A quick comparion for Delays:
>>>
>>>       delay := Delay forMilliseconds: 1.
>>>       bag := Bag new.
>>>       1000 timesRepeat:[bag add: [delay wait] timeToRun].
>>>       bag sortedCounts
>>>
>>> on my 4-core box it yields:
>>>
>>> - with AdvancedProcessorScheduler install
>>>  a SortedCollection(951->2 49->1)
>>>
>>> - with Processor fallbackToOldScheduler
>>>  a SortedCollection(953->2 47->1)
>>>
>>> - with old VM
>>>  a SortedCollection(952->2 47->1 1->3)
>>>
>>> not much overhead huh? :)
>>
>> That's not exactly the kind of benchmark I was looking for (if your process
>> scheduler takes milliseconds to do a switch I think we're not even close to
>> the ballpark ;-) More interesting for comparison is this (requires
>> closures):
>>
>>  semas := Array new: 10000.
>>  plist := Array new: 10000.
>>  1 to: semas size do:[:i| semas at: i put: Semaphore new].
>>  1 to: plist size-1 do:[:i| plist at: i put: [(semas at: i) wait. (semas
>> at:i+1) signal] fork].
>>  [semas first signal. semas last wait] timeToRun.
>>
>
> I not yet tried to apply changes to VMMaker with closures.
> Do you have a recipe, which base image could load latest VMMaker w/o
> problems? Is 3.10.2 ok for it?
>
>> Cheers,
>>  - Andreas
>>
>>
>
>
>
> --
> Best regards,
> Igor Stasenko AKA sig.
>



-- 
Best regards,
Igor Stasenko AKA sig.