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From: dik@cwi.nl (Dik T. Winter)
Subject: Re: What's the best language to start with? [was: Re: Should I learn
 C or Pascal?]
Date: 1996/08/16
Message-ID: <Dw7Kqs.I5D@cwi.nl>#1/1
X-Deja-AN: 174453839
sender: news@cwi.nl (The Daily Dross)
references: <danpop.839807980@news.cern.ch>
 <01bb88d4$022bf4a0$32ee6fce@timhome2> <danpop.840019072@news.cern.ch>
organization: CWI, Amsterdam
newsgroups: comp.lang.c,comp.lang.c++,comp.unix.programmer,comp.lang.ada
Date: 1996-08-16T00:00:00+00:00
List-Id: <comp.lang.ada>


In article <danpop.840019072@news.cern.ch> Dan.Pop@cern.ch (Dan Pop) writes:
 > >> >> >    for (j = 0; j < 10; ++j) {
 > >> >> >        for (i = 0; i < 50000; ++i) {
 > >> >> >            ++a[i]; ++b[i]; ++c[i]; ++d[i]; ++e[i];
 > >> >> >        }
 > >> >> >    }
...
 > Both versions have excellent paging locality.  Read them again and tell
 > me which one is likely to produce more page faults than the other.

Dan, obviously on a machine with only four pages the code above produces
an enormous amount of page faults!  Ah, a Commodore C64 with virtual
memory.
-- 
dik t. winter, cwi, kruislaan 413, 1098 sj  amsterdam, nederland, +31205924098
home: bovenover 215, 1025 jn  amsterdam, nederland; http://www.cwi.nl/~dik/