lkml.org 
[lkml]   [1999]   [May]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Overscheduling DOES happen with high web server load.
On Sat, 8 May 1999, Richard Gooch wrote:

>Reducing the cost of goodness() will help a bit, but even the search

You won't reduce the cost of goodness. You'll reduce the number of linear
search every sec from 40000 to 4000.
For the record 2.2.8-prex uses goodness in reschedule_idle(). The number
of the not needed schedule() invocation here is of the order of 2/3 every
sec or 10 under heavy load (never tried on 2.2.7 though, so I can't make
comparison).

2.2.8-prex has still some problem in reschedule_idle() (even if the whole
design is _far_ _far_ superior than the 2.2.7 one and I agree with it
_completly_), but at least it won't overschedule ;).

Andrea Arcangeli


-
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 13:51    [from the cache]
©2003-2011 Jasper Spaans