lkml.org 
[lkml]   [2004]   [Jul]   [31]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Statistical methods for latency profiling
On Sat, Jul 31, 2004 at 01:22:37AM -0400, Lee Revell wrote:
> Hey,
>
> Recently Ingo Molnar asked in one of the voluntary-preempt threads for
> the minimum and average scheduling delay reported by jackd. JACK does
> not currently maintain these statistics.
>
> I realized that the distribution of maximum latencies reported on each
> process cycle is fairly normally distributed.

This is not at all what I would expect. Instead, I'd expect to see
something like a gamma distribution, where we have everything
clustered down close to zero, but with a very long tail in the
positive direction falling off exponentially and obviously a hard
limit on the other side..

--
Mathematics is the supreme nostalgia of our time.
-
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: 2005-03-22 14:04    [W:0.255 / U:0.500 seconds]
©2003-2011 Jasper Spaans. Advertise on this site