Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752261AbXJAMuf (ORCPT ); Mon, 1 Oct 2007 08:50:35 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751719AbXJAMu2 (ORCPT ); Mon, 1 Oct 2007 08:50:28 -0400 Received: from nz-out-0506.google.com ([64.233.162.226]:17819 "EHLO nz-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751510AbXJAMu1 (ORCPT ); Mon, 1 Oct 2007 08:50:27 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=BxpuC8i0q4X4dL/rr4jaIfjJ2yoCH3zI01qZLCJ9HScsKPQ+7s9p5a/ecwf0Vemt6c+BVvQKifXgGUeuUXMhDdE+YddKCc59xh6R3t618ZDRQ7q2W1NnbK+Joiljbq78219I7fZD/jSz2ueYligDCrCXGCexmjUXvdq4fMMuiXw= Message-ID: Date: Mon, 1 Oct 2007 16:50:24 +0400 From: "Mikhail Kshevetskiy" To: "Andi Kleen" Subject: Fwd: x86_64 and AMD with C1E Cc: linux-kernel@vger.kernel.org, "Thomas Gleixner" In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <20071001101532.025d652f@localhost> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1433 Lines: 40 01 Oct 2007 11:33:48 +0200, Andi Kleen : > Mikhail Kshevetskiy writes: > > > > The same situation can be observed for linux-2.6.22. > > You're saying 2.6.22/x86-64 without any patches doesn't boot out of the box > with C1E enabled? If yes what are the exact symptoms? > > -Andi > No, it boot and work normally. The only thing i bother, is the additional 260 timer interrupts per seconds. Here is short result: c1e enabled: -- power consumption about 23 watts -- there is only C1 power state enabled -- there are about 260 timer interrupts per seconds tested with x86_64(2.6.22, 2.6.23-rc8, 2.6.23-rc8-hrt1 ), i386(2.6.21, 2.6.22, 2.6.23-rc5-hrt1) c1e disabled: -- power consumption about 27 watts -- there are no any power state enabled (including C1) -- there are no additional 260 timer interrupts per seconds tested with 2.6.23-rc6-hrt1/x86_64. I want to reduce the power consumption of my notebook. I see the 2 possibility: -- remove 260 additional timer interrupts (c1e enabled case ) -- force enable C1, C2 and C3 states (c1e disabled case) Do you have any idea how it can be reached? Mikhail Kshevetskiy - 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/