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From: dwc@homxc.UUCP
Newsgroups: comp.arch,comp.unix.wizards
Subject: Re: Kernel build times, esp. on Amdahl
Message-ID: <629@homxc.UUCP>
Date: Wed, 8-Jul-87 22:15:37 EDT
Article-I.D.: homxc.629
Posted: Wed Jul  8 22:15:37 1987
Date-Received: Sat, 11-Jul-87 14:57:30 EDT
References: <502@winchester.UUCP>
Organization: AT&T Bell Laboratories, Holmdel
Lines: 26
Keywords: benchmarks
Xref: utgpu comp.arch:1473 comp.unix.wizards:2927

In article <502@winchester.UUCP>, mash@mips.UUCP (John Mashey) writes:
> I've been intrigued by Amdahl's recent recuriting ads that say they
> build a UNIX kernel in 3 minutes.  Can anybody from Amdahl say:
> 1) what model this is on?
> 2) is 3 minutes CPU time, or real time, and what's the other number?
> 3) is this optimized or unoptimized?
> 
> For comparison:
> UNIX kernel make from scratch times: 4.3BSD+NFS, MIPS M/1000:
> 239.7u 74.5s 12:39 41% 99+231k 6739+6986io 3167pf	unoptimized
> 492.6u 100.3s 18:53 52% 174+313k 8591+8880io 3901pf 	optimized -O2
> 
> MIPS M/800's are a little slower, take about 15 minutes real, and 6 minutes
> total CPU time.
> 
> NOTE: this benchmark is NOT necessarily a good test of anything in particular,
> but it is of more than passing interest to people who do kernels!
> 
> [I'm hunting numbers from other machines for next Performance Brief.

i don't know about kernel builds but i once ported a cross compiler
enviroment in order to run a benchmark on an amdahl and the make went
so fast that i thought that i was 'cat'ting the makefile!

danny chen
{ihnp4|attunix}!homxc!dwc