Re: usleep

[Geert U. <ge...@li...>]

On Sat, 7 Dec 2002, Ken Tyler wrote:
> I've been trying to use usleep to get some millesecond delays in a prom
> programmer but the delays are about twenty times too long i.e.
> 
>   for (i=0 ; i<500 ; i++)
>     usleep(1000L);
> 
> should sleep for about 1/2 second but actually sleeps 10 secs
> 
> Is this a kernel problem ?

| callisto$ time ./a.out 
| 
| real	0m10.046s
| user	0m0.000s
| sys	0m0.010s
| callisto$ 

| cassandra:/tmp# time ./a.out
| 
| real	0m10.339s
| user	0m0.030s
| sys	0m0.080s
| cassandra:/tmp# 

| vervain$ time ./a.out
| 
| real    0m10.001s
| user    0m0.000s
| sys     0m0.010s
| vervain$ 

Hmmm...

callisto is my LongTrail, running Linux 2.4.20-rc1
cassandra is my A4000, running Linux 2.4.19
vervain is the Sun Blade 1000 at work, running Solaris 2.8

Apparently it's not Linux-specific...

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- ge...@li...

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds