[squeak-dev] Cog 2776 on Intel i7-4790K @ 4GHz

Chris Muller asqueaker at gmail.com
Sun Aug 31 22:00:48 UTC 2014


>> 0 tinyBenchmarks    '1,708,090,075 bytecodes/sec; 199,734,789 sends/sec'
>
> Nice.
>
>> [] bench    '131,000,000 per second.'
>
> Hmm, this mostly measures the millisecondClockValue primitive.
>
> How about we replace this
>
>         count := 0.
>         endTime := Time millisecondClockValue + 5000.
>         startTime := Time millisecondClockValue.
>         [ Time millisecondClockValue > endTime ] whileFalse: [ self value.  count := count + 1 ].
>         endTime := Time millisecondClockValue.
>
> with
>
>         count := 0.
>         repeat := true.
>         [(Delay forSeconds: 5) wait. repeat := false] forkAt: Processor activePriority + 1.
>         startTime := Time millisecondClockValue.
>         [ self value.  count := count + 1. repeat ] whileTrue.
>         endTime := Time millisecondClockValue.
>
> which on my machine makes it go from
>
>  '70,800,000 per second.'
>
> to
>
>  '168,000,000 per second.'

Wow, I didn't realize millisecondClockValue had that much of an
impact!  Yours is defiintely less-intrusive, we should update #bench..


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