Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261437AbVD3VhU (ORCPT ); Sat, 30 Apr 2005 17:37:20 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261438AbVD3VhU (ORCPT ); Sat, 30 Apr 2005 17:37:20 -0400 Received: from postfix3-1.free.fr ([213.228.0.44]:26323 "EHLO postfix3-1.free.fr") by vger.kernel.org with ESMTP id S261437AbVD3VhN (ORCPT ); Sat, 30 Apr 2005 17:37:13 -0400 Message-ID: <4273FA88.1060405@free.fr> Date: Sat, 30 Apr 2005 23:37:12 +0200 From: Boris Fersing User-Agent: Mozilla Thunderbird 1.0.2 (X11/20050430) X-Accept-Language: fr, en MIME-Version: 1.0 To: Robert Hancock CC: linux-kernel Subject: Re: HyperThreading, kernel 2.6.10, 1 logical CPU idle !! References: <3Z3u8-28Z-9@gated-at.bofh.it> <4273E2BB.9010509@shaw.ca> In-Reply-To: <4273E2BB.9010509@shaw.ca> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1152 Lines: 36 Robert Hancock a écrit : > Boris Fersing wrote: > >> Hi there, >> I've a p4 HT 3,06Ghz, I've HT enabled in the BIOS and in the kernel : >> >> Linux electron 2.6.10-cj5 #6 SMP Fri Mar 4 02:18:08 CET 2005 i686 Mobile >> Intel(R) Pentium(R) 4 CPU 3.06GHz GenuineIntel GNU/Linux . >> >> But it seems that one of my cpus is idle (gkrellm monitor or top) : >> >> Cpu0 : 88.0% us, 12.0% sy, 0.0% ni, 0.0% id, 0.0% wa, 0.0% hi, >> 0.0% si >> Cpu1 : 0.0% us, 0.3% sy, 0.0% ni, 99.7% id, 0.0% wa, 0.0% hi, >> 0.0% si >> >> >> I'm actually compiling thunderbird with MAKEOPTS="-j3", so , the second >> should be used, shouldn't it ? > > > Are you sure that it is actually compiling multiple files at once? > Yes I'm sure, Even if I launch more than 1 gcc, or for example, start a compilation + video encoding (mencoder) + ... the second CPU won't work (idle 100% or sometimes 99,9%). Regards, Boris. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/