mash@mips.UUCP (John Mashey) (07/07/87)
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.
Mail to me and I'll summarize to the net.]
--
-john mashey DISCLAIMER: <generic disclaimer, I speak for me only, etc>
UUCP: {decvax,ucbvax,ihnp4}!decwrl!mips!mash OR mash@mips.com
DDD: 408-991-0253 or 408-720-1700, x253
USPS: MIPS Computer Systems, 930 E. Arques, Sunnyvale, CA 94086haynes@ucscc.UCSC.EDU.ucsc.edu (99700000) (07/08/87)
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: I haven't seen the ads, but it has bothered me for years that we could compile the 'kernel' of the Burroughs 5500 MCP from scratch in about 20 minutes (from scratch being the only way you could compile it), yet on hardware 20 years younger it takes hours to compile a Unix kernel of about the same size. haynes@ucscc.ucsc.edu haynes@ucscc.bitnet ..ucbvax!ucscc!haynes
dwc@homxc.UUCP (07/09/87)
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
pdg@ihdev.UUCP (07/09/87)
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? I must say I believe it. On one of our systems: uts ihlpj 5.2.5 5 5890 (ie an amdahl 5890 running Unix 5.2.5) I can build GNU emacs from scratch in less than a minute. I would then guess that that is real time. Also (as a guess) I would say optimized as I would suppose they are running (as I was) the native mode compiler. Check out the Dhrystones for these beasties. Quite impressive and they do live up to it. -- Paul Guthrie "Another day, another Jaguar" ihnp4!ihdev!pdg -- Pat Sajak