Re: PC164 mysteriously slow

[email protected] (Christian Weisgerber) Thu, 6 May 2010 16:43:59 +0000 (UTC)
Newsgroups gmane.os.openbsd.alpha
Message-ID <[email protected]>
Christian Weisgerber <[email protected]> wrote:

> I fired up the AS800 for the gcc4 stuff, and now that I have both
> machines running in parallel I notice that the PC164 is slower than
> the AS800.
> 
> A simple "md5 -ttt" shows:
> PC164: 302 s
> AS800: 210 s

And we have a winner: gcc4.

I stupidly forgot to consider that I had already rebuilt /bin/md5
with gcc4 on the AS800.  The machines really are the same speed
when you use the same executable.

But gcc4 doesn't just speed up a silly md5 -t test.  In fact, gcc4
produces so much better code that gcc4-built gcc4 itself is faster
than gcc3-built gcc3:

kernel "make depend && make":
(PC164) gcc3: 91 min
(AS800) gcc4: 80 min

That is quite amazing.

-- 
Christian "naddy" Weisgerber                          [email protected]