🚀 go-pugleaf

In article <4jj4mj$jnk@nntpb.cb.att.com>, gupta@mrspock.mt.att.com (Arun
Gupta) wrote:

> Byte benchmarks are CPU intensive.  The PowerMac systems do not exhibit
> the full strength of the PPC because of non-native OS, etc. -- factors
> which enter into the Byte benchmarks only in the math library, ( and 
> perhaps in cache management ? )

True.

> Machine : PPC 7100/66, 512K L2, 40 MB memory
> System  : System 7.5.3
> Compiler: CodeWarrior 7
> Compiler Settings :  Optimize for 601, speed.
> Source code : available from www.byte.com
> 
> Quote :
> 
> BYTEmark (tm) Native Mode Benchmark ver. 2 (3/95)
> ========== ALL STATISTICS ==========
> **Thu Mar 21 22:25:03 1996
> **Macintosh 7.5
> **CodeWarrior
> **ver 7
> **Sizeof: int:4 short:2 long:4
> ====================================
[snip]
> ===========OVERALL============
> INTEGER INDEX: 0.935630
> FLOATING-POINT INDEX: 0.726772
>  (90 MHz Dell Pentium = 1.00)
> ==============================

Not only is the 66mhz 601 NEARLY as fast as a P90 on your machine - but to
be fair, I did the same test on a 6100/66 (same performer) - but used
motorolla's compiler, the results follow -

> BYTEmark (tm) Native Mode Benchmark ver. 2 (10/95)
> ========== ALL STATISTICS ==========
> **Thu Mar 26 12:54:43 1996
> **Generic PowerPC
> **Motorolla C SDK
> **DR 2.0/MPW
> **Sizeof: int:4 short:2 long:4
> ====================================
[snip]

> ===========OVERALL============
> INTEGER INDEX: 1.23877
> FLOATING-POINT INDEX: 1.238541
>  (90 MHz Dell Pentium = 1.00)
> ==============================

So a 601 was 23% FASTER than a 90mhz pentium. Not bad.

But as mentioned this is processor intensive, and to be fair, the MacOS is
not fully native (like WinNT has WoW, or Win95 has 16 bit code). All
hamper performance. So rather than the Mac being 79% faster in the real
world, it is more like 40% according to Apple and Dataquest?!?! (Forget
who worked on their study).
-- 
David K. Every           | MaciDo Warrior - The Macintosh Way
Sr. Software Engineer    | 
Jostens Learning Corp.   |