lkml.org 
[lkml]   [2000]   [Jan]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Interesting analysis of linux kernel threading by IBM
On Sun, 23 Jan 2000, Sean Hunter wrote:

> On Sun, Jan 23, 2000 at 03:50:32PM +0100, Davide Libenzi wrote:
> > We can write this :
> >
> > TS_old = Ko + O( N )
> > TS_new = Kn + O( log( N ) )
> >
> > Where N is the RQ size.
> >
> > Now the curve of TS_new( N ) goes down ( intersect ) the curve TS_old( N ) in a
> > point that in the worse case I've measured is N = 8 ( I prefer always to report
> > worse cases to avoid to be shooted ), but I've measured even 4 with a medium
> > that I can think to be near to six.
>
> In other words, almost all real-world cases lose. Nice...
>
> Sean

If you are on a 8 way SMP box a load of 4 is very reasonable. on anything
less then a 4-way SMP box it is almost certinly a loss.

David Lang


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

\
 
 \ /
  Last update: 2005-03-22 13:56    [W:0.091 / U:0.448 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site