Jan Wieck wrote:
> >> >My gcc 2.95.3 manual says:
> >> >
> >> > -pipe Use pipes rather than temporary files for communi-
> >> > cation between the various stages of compilation.
> >> > This fails to work on some systems where the assem-
> >> > bler cannot read from a pipe; but the GNU assembler
> >> > has no trouble.
> >> >
> >> >so it looks like we can't use it on all platforms without testing. I
> >> >will enable it for linux. Do people want to test other platforms?
> >>
> >> It should work on any platform that uses the GNU tools, so that means
> >> *BSD is in the same boat as Linux.
> >>
> >> Does it really speed compilation though? I saw somewhere that it
> >> didn't make much difference and might even hurt sometimes.
> >
> > I saw a 5 second improvement with -pipe on a 150 second full compile of
> > PostgreSQL. However, I have a MFS /tmp. I suppose if I didn't, it
> > would be slower. However, the difference is so small as to be
> > meaningless. Can someone else test on another *BSD and report?
> >
>
> Also, IIRC you have a dual processor box. In that case using -pipe helps
> to utilize 2 CPU's (not much though), whereas on a single CPU system it
> forces extra context switches that aren't necessary when running the
> stages sequential.
Oh, OK. I am on a dual, so maybe that's why I see an improvement. If I
can get another BSD guy to test this, I can remove the pipe for all the
BSD's.
--
Bruce Momjian | http://candle.pha.pa.us
pgman@candle.pha.pa.us | (610) 359-1001
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