Re: process/thread scheduling and hyper-threading

To: Sad Clouds <cryintothebluesky%googlemail.com@localhost>
Subject: Re: process/thread scheduling and hyper-threading
From: Jean-Yves Migeon <jeanyves.migeon%free.fr@localhost>
Date: Sun, 21 Nov 2010 13:52:28 +0100

On 20.11.2010 18:43, Sad Clouds wrote:
> Does NetBSD use any special policy when scheduling tasks on CPUs with
> hyper-threading? For example, does it ensure that tasks are load
> balanced across physical cores, rather than simply assigning tasks to
> any logical core?

I don't think so. You would have to tweak it through CPU affinities via
schedctl(8).

Speaking of which, before you may ask: same goes for NUMA, as NetBSD
does not support NUMA at present.

-- 
Jean-Yves Migeon
jeanyves.migeon%free.fr@localhost

References:
- process/thread scheduling and hyper-threading
  - From: Sad Clouds

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