Subject: Re: Bad count of CPUs
To: Joseph A. Dacuma <>
From: David Laight <>
List: current-users
Date: 10/11/2006 22:28:23
On Thu, Oct 12, 2006 at 04:01:40AM +0800, Joseph A. Dacuma wrote:
> Is it wise to enable HT? I came across various sites where they say Hyper
> Threading makes a system unstable.


Unless your scheduler completely understands HT, and assigns processes
accordingly, and unless all the idle loops and busy-wait loops are
HT correct, you could easily be better off disabling HT.

To some extent HT is a win under windows because its scheduler is so bad
at handling spinning processes.


David Laight: