Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751484AbWHNQCa (ORCPT ); Mon, 14 Aug 2006 12:02:30 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751485AbWHNQC3 (ORCPT ); Mon, 14 Aug 2006 12:02:29 -0400 Received: from spirit.analogic.com ([204.178.40.4]:11524 "EHLO spirit.analogic.com") by vger.kernel.org with ESMTP id S1751484AbWHNQC3 convert rfc822-to-8bit (ORCPT ); Mon, 14 Aug 2006 12:02:29 -0400 MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT X-MimeOLE: Produced By Microsoft Exchange V6.5.7226.0 X-OriginalArrivalTime: 14 Aug 2006 16:02:26.0823 (UTC) FILETIME=[09A4E970:01C6BFBB] Content-class: urn:content-classes:message Subject: Re: HT not active Date: Mon, 14 Aug 2006 12:02:26 -0400 Message-ID: In-Reply-To: <20060814153209.GB13641@csclub.uwaterloo.ca> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: HT not active thread-index: Aca/uwmsq3ynEl+XSey3i72pt0C+dw== References: <44E08769.7010000@shaw.ca> <20060814153209.GB13641@csclub.uwaterloo.ca> From: "linux-os \(Dick Johnson\)" To: "Lennart Sorensen" Cc: "Robert Hancock" , "Jan Engelhardt" , "Linux Kernel Mailing List" Reply-To: "linux-os \(Dick Johnson\)" Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4019 Lines: 105 On Mon, 14 Aug 2006, Lennart Sorensen wrote: > On Mon, Aug 14, 2006 at 10:51:47AM -0400, linux-os (Dick Johnson) wrote: >> It's mostly a motherboard issue. This board is an Intel motherboard. >> However, Intel decided to not allow HT (strange). I tried to >> bring the MB back to CompUSA, but they declared; "The board is >> not defective. Windows doesn't use hyper threading, and this is >> a windows-only board...." They claim no board is compatible with >> Linux. They were perfectly willing to give me back my money, but >> they would not guarantee that any of their motherboards were >> "compatible" with Linux. With an attitude like that, one can >> quickly learn where not to buy motherboards. > > It is both a motherboard (bios actually) and cpu issue. > >> processor : 0 >> vendor_id : GenuineIntel >> cpu family : 15 >> model : 2 >> model name : Intel(R) Pentium(R) 4 CPU 2.80GHz >> stepping : 7 >> cpu MHz : 2794.381 >> cache size : 512 KB >> fdiv_bug : no >> hlt_bug : no >> f00f_bug : no >> coma_bug : no >> fpu : yes >> fpu_exception : yes >> cpuid level : 2 >> wp : yes >> flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe cid xtpr >> bogomips : 5592.62 > > I have a P4 2.8GHz which does do HT. It is family 15, model 2, stepping > 9. Stepping 7 is probably from just before intel started enabling HT > support. The P4A Northwood did not have HT and came in 1.6 to 2.8GHz > (400FSB). The P4B Northwood did have HT on the 3.06Ghz model only and > came in 2.0 to 3.06Ghz (533FSB). The P4C Northwood had HT and came > in 2.4 to 3.4GHz (800FSB). I have the P4C 2.8GHz which is showing as > model 2 stepping 9. > >> The solution may be, in the future, to bring a bootable CR/ROM with you >> when buying motherboards or CPUs.... and get stuff off the net that's >> guaranteed to do what you want. This exact same software, exact same >> configuration ".config" file, produces this on another machine: > > Who wants to buy a power wasting P4 now, when they can instead get the > Core 2 or an Athlon 64 which run faster using less power? They are now pretty cheap in the USA. Being obsolete by a year or so gets some good performance at the additional electrical cost of a nightlight! > >> processor : 0 >> vendor_id : GenuineIntel >> cpu family : 15 >> model : 2 >> model name : Intel(R) Xeon(TM) CPU 2.40GHz >> stepping : 9 >> cpu MHz : 2399.779 >> cache size : 512 KB >> physical id : 0 >> siblings : 2 >> core id : 0 >> cpu cores : 1 >> fdiv_bug : no >> hlt_bug : no >> f00f_bug : no >> coma_bug : no >> fpu : yes >> fpu_exception : yes >> cpuid level : 2 >> wp : yes >> flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe cid xtpr >> bogomips : 4804.62 > > So this is a model 2 stepping 9 just as my P4 is and HT works just like > my P4 does. > > I can't actually find a list that says when stepping had what feature > enabled. > > -- > Len Sorensen > Cheers, Dick Johnson Penguin : Linux version 2.6.16.24 on an i686 machine (5592.62 BogoMips). 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