In article <13306@lhdsy1.lahabra.chevron.com> shc@lhdsy1.lahabra.chevron.com (S.H. Couturie) writes:
>In article <23qh9i$e6@info.epfl.ch> brossard@sic.epfl.ch writes:
>> S10-512 (5.2):
>>real 2.0
>>user 1.9
>>sys 0.0
>>
>OK, can't resist. I copied the /usr/share/man/man1/csh.1 from our
>SparcCenter 1000 to my R4000 Indigo, and:
> /bin/time nroff -man csh.1 >/dev/null
> real 2.1
> user 1.6
> sys 0.0
>Gee, and my Indigo is a year old.....
Ok, now try this on your SC10000 and your Indigo (preferably from a
script so they all start about the same time) the average the times:
/bin/time nroff -man csh.1 >/dev/null &
/bin/time nroff -man csh.1 >/dev/null &
/bin/time nroff -man csh.1 >/dev/null &
/bin/time nroff -man csh.1 >/dev/null &
Hint: the SC1000 will do four of these (or more depending on how
many CPUs you have installed) in essentially the SAME amount of time
your Indigo does one, while your Indigo will take more than four
times as long to do each one with four running. You may do only one
thing at a time, but for a busy system multiprocessing is a big win.
-- / / Jerry, Computervision CalmaSD UNIX SysAdmin, +1 619 587 3065 /
This archive was generated by hypermail 2.1.2 : Fri Sep 28 2001 - 23:08:07 CDT