>
> Several runs of the program take about the same time but the time
> changes wildly when the executable is called differently.
>
> -------
> ./xx/xxx
> 5 s
> xx/xxx
> 9 s
>
<snip>
> The only thing which I can think of that can be causing this is some
> memory alignment issue.
>
it could also be the shell taking time to look up the names?
> Compile the code below with gcc -O -march=pentiumpro and save the
> program to /tmp/x (1x) and /tmp/xxxxxxxxxxx (11x). cd /tmp; ./x shows me
> 0.490495 (with slight variations amongst runs) and ./xxxxxxxxxxx 1.016591.
> The real results depend on hw but they occur always with different
> differences in speed and the length of name of fast/slow programs.
>
here're my numbers
athlon 850, iwill k266 (via686b southbridge), 384m ram, 5400rpm fujitsu 20G
FreeBSD fenris 5.0-CURRENT FreeBSD 5.0-CURRENT #10: Fri Feb 1 23:57:28 CST 2002
root@fenris:/usr/src/sys/i386/compile/FENRIS i386
./x bounces between .6 and .7
./xxx...xx bounces between .65 and .75
with 100 x's in the name, .67 to .76
/tmp/x .55 .60
/tmp/x(11) .62
/tmp/x(100) .62 .72
>
>
> --
> Michal Mertl
> [EMAIL PROTECTED]
>
-Erik <[EMAIL PROTECTED]> [http://math.smsu.edu/~erik]
The opinions expressed by me are not necessarily opinions. In all probability,
they are random rambling, and to be ignored. Failure to ignore may result in
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