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From: "Jeff V. Merkey" <jmerkey@vger.timpanogas.org>
To: Robert Love <rml@tech9.net>
Cc: "Martin J. Bligh" <Martin.Bligh@us.ibm.com>,
	James Bourne <jbourne@MtRoyal.AB.CA>, Ingo Molnar <mingo@elte.hu>,
	linux-kernel@vger.kernel.org
Subject: Re: Hyperthreading
Date: Wed, 17 Apr 2002 14:24:38 -0700	[thread overview]
Message-ID: <20020417142438.A27778@vger.timpanogas.org> (raw)
In-Reply-To: <Pine.LNX.4.44.0204171358380.21779-100000@skuld.mtroyal.ab.ca> <1833210000.1019077852@flay> <1019074547.1670.98.camel@phantasy>



Beware!  I have seen lockups and driver sickness with hyperthreading 
enabled on some motherboards.  Most notably, Tyan with 2.4.19 and
2.5.6.  


Jeff

On Wed, Apr 17, 2002 at 04:15:42PM -0400, Robert Love wrote:
> On Wed, 2002-04-17 at 17:10, Martin J. Bligh wrote:
> > > Total of 4 processors activated (14299.95 BogoMIPS).
> > 
> > Before you get too excited about that, how much performance boost do 
> > you actually get by turning on Hyperthreading? ;-)
> 
> Certainly not the mips*4 that bogomips is showing :)
> 
> I guess that is a "bug" ?
> 
> 	Robert Love
> 
> 
> -
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  parent reply	other threads:[~2002-04-17 21:04 UTC|newest]

Thread overview: 60+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-04-16 22:29 SMP P4 APIC/interrupt balancing James Bourne
2002-04-17  4:43 ` Martin J. Bligh
2002-04-17  4:47   ` James Bourne
2002-04-17 14:41     ` James Bourne
2002-04-17 13:08       ` Ingo Molnar
2002-04-17 18:52         ` Steffen Persvold
2002-04-17 16:51           ` Ingo Molnar
2002-04-17 18:58             ` Steffen Persvold
2002-04-17 18:58           ` Steffen Persvold
2002-04-17 19:06             ` James Bourne
2002-04-18  8:23             ` Maciej W. Rozycki
2002-04-17 18:56         ` James Bourne
2002-04-17 17:07           ` Ingo Molnar
2002-04-17 20:02             ` James Bourne
2002-04-17 21:10               ` Hyperthreading Martin J. Bligh
2002-04-17 20:15                 ` Hyperthreading Robert Love
2002-04-17 20:23                   ` Hyperthreading Dave Jones
2002-04-17 21:24                   ` Jeff V. Merkey [this message]
2002-04-17 20:25                 ` Hyperthreading James Bourne
2002-04-17 21:26                 ` Hyperthreading Jeff V. Merkey
2002-04-18  0:31                   ` Hyperthreading Martin J. Bligh
2002-04-18  4:50                     ` Hyperthreading Jeff V. Merkey
2002-04-17 22:12                 ` Hyperthreading Alan Cox
2002-04-18 16:04       ` SMP P4 APIC/interrupt balancing Bill Davidsen
2002-04-19 11:14         ` Mark Hounschell
2002-04-19 13:27           ` James Bourne
2002-04-17 12:47 ` Shuji YAMAMURA
2002-04-17 20:34 Hyperthreading Holzrichter, Bruce
2002-04-17 22:48 ` Hyperthreading Martin J. Bligh
2002-04-18  1:21   ` Hyperthreading James Bourne
2002-04-18  1:52 Hyperthreading Holzrichter, Bruce
2002-08-21 11:32 Hyperthreading Reed, Timothy A
2002-08-21 13:48 ` Hyperthreading James Bourne
2002-08-21 17:33   ` Hyperthreading Hugh Dickins
2002-08-21 19:34     ` Hyperthreading James Bourne
2002-08-21 21:16       ` Hyperthreading Kelsey Hudson
2002-08-21 21:55         ` Hyperthreading Banai Zoltan
2002-08-22  8:05           ` Hyperthreading venom
2002-08-26 19:00           ` Hyperthreading Kelsey Hudson
2002-08-22  8:00         ` Hyperthreading venom
2002-08-23  7:28     ` Hyperthreading Gilad Ben-Yossef
2002-08-23  8:10       ` Hyperthreading Hugh Dickins
2002-08-23  8:27         ` Hyperthreading Alan Cox
2002-08-23  8:12       ` Hyperthreading venom
2002-08-21 22:56 Hyperthreading Nakajima, Jun
2002-08-21 23:45 ` Hyperthreading Alan Cox
2002-08-22  9:15 Hyperthreading Marc Dietrich
2002-08-22 14:06 ` Hyperthreading Hugh Dickins
2002-08-22 14:36   ` Hyperthreading Marc Dietrich
2002-08-22 12:58 Hyperthreading Nir Soffer
2002-08-22 14:30 ` Hyperthreading Hugh Dickins
2003-11-25  9:44 hyperthreading Gábor Lénárt
2003-11-25  9:48 ` hyperthreading Emiliano 'AlberT' Gabrielli
2003-11-25 10:05   ` hyperthreading Gábor Lénárt
2003-11-25 10:16     ` hyperthreading Arjan van de Ven
2003-11-25 10:32     ` hyperthreading Måns Rullgård
2003-11-25 10:45       ` hyperthreading Mikael Pettersson
2003-11-29 13:29   ` hyperthreading Bill Davidsen
2003-12-01 10:53     ` hyperthreading Emiliano 'AlberT' Gabrielli
2003-11-25 10:22 ` hyperthreading Karl Pitrich

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