Re: Time and System millisecondsToRun
Posted by
GLASS mailing list on
Aug 27, 2020; 9:59pm
URL: https://forum.world.st/Time-and-System-millisecondsToRun-tp5120957p5120963.html
Time class>>millisecondsElapsedTime: is measuring elapsed (“wall clock”) time, including time that other processes are running and the process is waiting for I/O or other tasks to finish. There is no method #millisecondsToRun: in Time.
System is measuring CPU time used by the process, excluding time waiting for semaphores.
> On Aug 27, 2020, at 2:15 PM, bruno buzzi brassesco via Glass <
[hidden email]> wrote:
>
> Hi,
>
> Why there is a difference answer in the following expressions ? (tested on GS 3.5.1 and 3.3.7)
>
> Time millisecondsToRun: [(Delay forSeconds: 4) wait]. "answer 4000 -> computing the delay time "
>
> System millisecondsToRun: [(Delay forSeconds: 4) wait]. "answer 0 -> NOT computing the delay time"
>
> It seems a difference in how time is computed:
> System use primitive 178 and Time use primitive 13.
>
> So Time check actual time difference while System check CPU time consumed then excluding delays.
>
> regards,
> bruno
>
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