lkml.org 
[lkml]   [2005]   [Jul]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: kernel 2.6 speed
From
Date
On Sul, 2005-07-24 at 12:12 -0700, Ciprian wrote:
> I'm not an OS guru, but I ran a little and very simple
> test. The program bellow, as you can see, measures the
> number of cycles performed in 30 seconds.

No it measures the performance of the "time()" call. Windows has some
funky optimisations that we never bother with because time() isn't a hot
path in the real world.

Instead try code which does


time(&start);
while(count++ < LOTS) {
Do_stuff
}
time(&end)
and you'll find the numbers on pure CPU work are essentially CPU bound
not OS affected at all

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-07-25 01:26    [from the cache]
©2003-2011 Jasper Spaans