To squeeze a bit of performance REXX should be built with the Interprocedural optimization (IPO) activated
My tests showed an increase in performance between 5 and 8 % Use the make module CheckIPOSupported And if supported define the property for the relevant <modules> set_property( TARGET ………. PROPERTY INTERPROCEDURAL_OPTIMIZATION TRUE ) ( the Rexx executable, the rexx library , the rexxapi library , the rxapi executable the rexxc executable ) pretty easy Cheers E > On 9 Aug 2020, at 14:24, René Jansen <rvjan...@xs4all.nl> wrote: > > on behalf of James R. Manchester, xjmanc...@gmail.com > <mailto:xjmanc...@gmail.com> : > > Is there something in ooRexx that limits its use of the CPU within Windows? > I have an application that should use 100% of the CPU but only manages about > 20%. The following program runs for 60 seconds and it should use the CPU > continuously. However, according to Task Manager, it doesn't quite use 22%. > What's limiting the use of the CPU? Is there some setting which can be used > to change this behavior? > > Regards, > Jim Manchester > > /* */ > > Duration = 60 --Number of seconds to execute. > > Start = Time('S') -- Get the start time. > > i = 0 > do forever > a = 1234 * 24536 > b = a / 25 > c = a * b > Elapsed = Time('S') - Start > i += 1 > if Elapsed > Duration then > leave > end > > say 'There were' i 'iterations in ' Elapsed 'seconds.' > > exit > > > _______________________________________________ > Oorexx-devel mailing list > Oorexx-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/oorexx-devel
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