Subject: Re: Why are things so slow?
To: Simon Burge <simonb@NetBSD.ORG>
From: Matt Thomas <matt@3am-software.com>
List: port-mips
Date: 06/07/2000 21:06:10
At 01:59 PM 6/8/2000 +1000, Simon Burge wrote:
>Matt Thomas wrote:
>
> > (cd usr.bin/make; make clean; csh -c 'time make')
> >
> > ds5k:   580.7u 183.2s 13:20.01 95.4% 0+0k  15+923io 1193pf+0w
> > mp800:  352.1u  68.2s  7:23.12 94.8% 0+0k  12+846io  256pf+0w
> > vs4k:   ???.?u  ??.?s  5:42.70 ??.?% 0+0k  19+331io  471pf+0w
> > cobalt:  91.1u  16.7s  2:01.75 88.6% 0+0k 786+974io 1078pf+0w
>
>60MHz R4400 (DECsystem 5900/60), src via NFS:
>
>143.4u 29.7s 3:05.16 93.5% 0+0k 313+1178io 391pf+0w
>
>With the DECsystem, 60MHz is the external clock speed, not the internal
>doubled clock speed - eg, lmbench reports 119MHz.  I'd say you should
>be getting about the same performance as my DEC box all things being
>equal.  I'm guessing that the C compiler doesn't do FP - that'd kill
>the VR4121...

The DECstation 5000/125 is very slow.  I'd expect to closer to the VAX
in terms of performance.  The lack of FP during doesn't matter since
that's mostly integer stuff.
--
Matt Thomas               Internet:   matt@3am-software.com
3am Software Foundry      WWW URL:    http://www.3am-software.com/bio/matt/
Cupertino, CA             Disclaimer: I avow all knowledge of this message