lkml.org 
[lkml]   [2007]   [Apr]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [Announce] [patch] Modular Scheduler Core and Completely Fair Scheduler [CFS]
On Sat, 14 Apr 2007, Davide Libenzi wrote:

> Haven't looked at the scheduler code yet, but for a similar problem I use
> a time ring. The ring has Ns (2 power is better) slots (where tasks are
> queued - in my case they were som sort of timers), and it has a current
> base index (Ib), a current base time (Tb) and a time granularity (Tg). It
> also has a bitmap with bits telling you which slots contains queued tasks.
> An item (task) that has to be scheduled at time T, will be queued in the slot:
>
> S = Ib + min((T - Tb) / Tg, Ns - 1);

... mod Ns, of course ;)


- Davide


-
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: 2007-04-15 01:29    [W:1.114 / U:0.432 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site