Re: RFC: THE OFFLINE SCHEDULER
[Posted September 2, 2009 by jake]
| From: |
| Mike Galbraith <efault-AT-gmx.de> |
| To: |
| Christoph Lameter <cl-AT-linux-foundation.org> |
| Subject: |
| Re: RFC: THE OFFLINE SCHEDULER |
| Date: |
| Tue, 25 Aug 2009 19:56:33 +0200 |
| Message-ID: |
| <1251222993.7023.53.camel@marge.simson.net> |
| Cc: |
| raz ben yehuda <raziebe-AT-gmail.com>, riel-AT-redhat.com, mingo-AT-elte.hu,
peterz-AT-infradead.org, andrew motron <akpm-AT-linux-foundation.org>,
wiseman-AT-macs.biu.ac.il, lkml <linux-kernel-AT-vger.kernel.org>,
linux-rt-users-AT-vger.kernel.org |
| Archive‑link: | |
Article |
On Tue, 2009-08-25 at 11:23 -0400, Christoph Lameter wrote:
> On Sun, 23 Aug 2009, Mike Galbraith wrote:
>
> > The rest, I'll leave off replying to, we're kinda splitting hairs. I
> > don't see a big generic benefit to OFFSCHED or ilk, others do.
>
> No we are not splitting hairs. OFFSCHED takes the OS noise (interrupts,
> timers, RCU, cacheline stealing etc etc) out of certain processors. You
> cannot run an undisturbed piece of software on the OS right now.
I asked the questions I did out of pure curiosity, and that curiosity
has been satisfied. It's not that I find it useless or whatnot (or that
my opinion matters to anyone but me;). I personally find the concept of
injecting an RTOS into a general purpose OS with no isolation to be
alien. Intriguing, but very very alien.
-Mike
