From owner-freebsd-alpha  Tue May 29  2:18:52 2001
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To: Yoriaki FUJIMORI <fujimori@grafin.fujimori.cache.waseda.ac.jp>
Cc: <freebsd-alpha@freebsd.org>
Subject: Re: tscp MIPS result really weird 
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Hi this is my case.
I run again the compiler with proper options:
DPW 500A (MIATA) 500MHz ev56 2MB BCACHE 96KB ACACHE  256MB RAM

FreeBSD 4.3 GENERIC
GCC: cc -O3 -funroll-loops -fexpensive-optimizations -fschedule-insns2 *.c
-o tsc.gcc *.o -lcompat

Nodes: 550822
Best time: 8335 ms
Nodes per second: 66085 (449.2 MIPS)

this with a few processes running on the system.
The same benchmark when compiling in /usr/ports/x11/XFree86-4 gives me:

Nodes: 550822
Best time: 11959 ms
Nodes per second: 46059 (313.1 MIPS)

the same benchmark in single user mode gives me 500MIPS
Is it normal this big difference ??

I guess anyway the GCC is not as well optimized as COMPAQ cc.

Anyone might run this test on his own Miata too ??
thanks

Rick

On Tue, 29 May 2001, Yoriaki FUJIMORI wrote:

> Date: Tue, 29 May 2001 16:58:26 +0000
> From: Yoriaki FUJIMORI <fujimori@grafin.fujimori.cache.waseda.ac.jp>
> To: Riccardo.Veraldi@fi.infn.it
> Cc: freebsd-alpha@freebsd.org
> Subject: Re: tscp MIPS result really weird
>
> I do not know the exact spec of your machine and how it is configured.
> But, I will show you my result:
>
> (1) AlphaPC164 500MHz(2MB)/512MB [FreeBSD4.3]
> (2) PC164LX 600MHz(4MB)/1024MB [Tru64 5.0]
> (3) UP1100 600MHz(2MB)/768MB [FreeBSD4.2]
>
> (A) ccc -tune ev56 -O4 -fast -ifo *.c (Compaq ccc on linux-emulator)
>   (1) 550822, 7143ms,  77113 (524 MIPS)
>   (3) 550822, 4309ms, 127830 (869 MIPS)
> (B) ccc -tune ev6 -O4 -fast -ifo *.c (Compaq ccc on linux-emulator)
>   (3) 550822, 4159ms, 132240 (900 MIPS)
> (C) cc -nointrinsics -tune ev56 -O3 -ifo *.c (Compaq cc on tru64)
>   (2) 550822, 5554ms, 99175 (674.2 MIPS)
>   (3) 550822, 4354ms, 126509 (860 MIPS)
>
> I guess the amount of B-cache matters with respect to this kind of
> small scale benchmarks.
>
> Yoriaki Fujimori
>


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