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