Cygwin allocted time slice
Brian Dessent
brian@dessent.net
Thu Jun 14 15:41:00 GMT 2007
Aaron Gray wrote:
> Weird I was getting very long compile times for GCC and on using 'time' was
> getting indications that make was only getting 25% of total system time.
>
> I'll see if it is repeatable on another system.
Hint: Cygwin is slow.
Emulating fork() takes a complicated dance between parent and child. A
lot of this involves one waiting for the other to complete a stage of
initialization. Thus, a Cygwin process that spawns a lot of children
does a lot of waiting. It is a price you pay for being able to compile
POSIX source unmodified on Windows.
Also, I/O.
Also, Cygwin is around ten years old now, and people have been
complaining that it's slow for approximately 9 years and 364 days. Do
you really think that if speeding it up was a matter of just setting
some scheduling flag somewhere it would have gone unnoticed all this
time?
Brian
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