Subject: Re: Discussing the future of the NetBSD scheduler
To: None <tech-kern@netbsd.org>
From: None <grifo3000@interfree.it>
List: tech-kern
Date: 03/11/2005 13:10:21
On Wed, 9 Mar 2005 20:55:50 +1100
Christopher JS Vance <netbsd@nu.org> wrote:

> Apparently this scheduler periodically loses track of scheduling
> history it has accumulated.  This may have been repaired, but probably
> not.

Linux 2.6's scheduler is very similar to FreeBSD's ULE apart from it uses only
two queues arrays instead of the ULE's three.
I have not understood why you prefer tracking scheduling history than having
a O(1) scheduler optimized also for SMP jobs.

> Peter Williams (see LWN for information) was working on a pluggable
> scheduler for Linux to enable one of his schedulers to be enabled (and
> disabled if required) without requiring reboot.  I'm no longer with
> the company he's working for.

Why not?

gb g.