Optimizing away "ReadFile" calls when Make calls stat()

[Puttkammer, Roman]

> -----Original Message-----
> From: jfaith@lineo.com [ mailto:jfaith@lineo.com ]
> ...
> script just did "make --version > /dev/null" one thousand times
> ...
> Linux: 3 sec.
> VMWare running Linux: 9 sec.
> DOS (batch file) 18 sec.
> Cygwin: 30 sec.

AFAIK, fork() tends to be much slower on windows than on most unixes
such as solaris or linux. Hence you'll always get a bad performance
on windows when running this kind of tests. I doubt however that you
can generalize these results; it's kind of like comparing pineapples
with carrots.

The reason why this is the case though is probably because unixes are
optimized for server applications using many heavy and light weight
processes/threads. Windows however seems to be optimized for running
10meg VB script functions inside an excel spreadsheet - and it does
actually a pretty good job running those :-)

putt

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