Re: linux-oracle-hyper threading

From: Tanel Poder <tanel_at_@peldik.com>
Date: Tue, 22 Jul 2003 16:06:52 +0300
Message-ID: <3f1d36ec$1_1@news.estpak.ee>

Hi!

At least Redhat Advanced Server 2.1 sees hyperthreaded processors, that a 4way SMP box is actually seen as 8way.
But I wouldn't recommend using Oracle's parallel featres with 1 CPU machine with hyperthreading, because parallel execution needs quite much coordinating between slaves etc so you can make your processes even slower than with serial execution.

Hyperthreading doesn't make 2 CPUs of one, it just allows us to use CPU strength better with (quite a) few tricks.

Tanel.

"kshathrya" <kshathrya_at_hotmail.com> wrote in message news:StBSa.107361$ye4.78464_at_sccrnsc01...
> hi all,
> does red hat linux 9 support hyperthreaded p4 systems?
> if i install oracle 9i on a rehat linux 9 hyperthreaded system, can i see
> that as 2 virtual processor from oracle's perspective?
> can i use oraclel's parallel features with these virtual processor?
>
> tnx,
> ks
>
>
Received on Tue Jul 22 2003 - 08:06:52 CDT