Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758252AbYBZFsz (ORCPT ); Tue, 26 Feb 2008 00:48:55 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751273AbYBZFss (ORCPT ); Tue, 26 Feb 2008 00:48:48 -0500 Received: from ag-out-0708.google.com ([72.14.246.251]:47672 "EHLO ag-out-0708.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751500AbYBZFsq (ORCPT ); Tue, 26 Feb 2008 00:48:46 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=jhhq2mVEc3OaBlelLsKhhX7p7TEekh/Jy86hHpFwxa4n6bES2C9kIRoWXXGs8PHj0X9u11O4up5RVsSqajwJ39u3Tsp5U9/d8krzLP4t+aNXRpfoYimzOupLjPCla27n5AlLaC2DgLMU1jKZFtwXXeWxvI86CTg0R1Eio48tE/A= Message-ID: Date: Tue, 26 Feb 2008 13:48:45 +0800 From: "Dave Young" To: "Randy Dunlap" Subject: Re: boot_delay broken ? Cc: akpm , "Dave Jones" , "Linux Kernel" , "Thomas Gleixner" In-Reply-To: <20080225212251.18c4659e.randy.dunlap@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <20080224004615.GA31012@codemonkey.org.uk> <20080225212251.18c4659e.randy.dunlap@oracle.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1633 Lines: 48 On Tue, Feb 26, 2008 at 1:22 PM, Randy Dunlap wrote: > On Mon, 25 Feb 2008 10:14:36 +0800 Dave Young wrote: > > > On Sun, Feb 24, 2008 at 8:46 AM, Dave Jones wrote: > > > The boot_delay switch seems to be behaving strangely in the > > > current -git. Setting it to =10 makes the output 'bursty' > > > it becomes slow for some printk's whilst others scroll by > > > at regular speed. > > > Setting it any higher than that seems to make it pause for > > > a really long time before it outputs any text at all. > > > > On my side there's this issue for a long time > > http://lkml.org/lkml/2007/8/8/79 > > [http://marc.info/?l=linux-kernel&m=118655896515049&w=2] > > You asked questions and they were answered. Perhaps you didn't like > the answers. No, I like it. Thanks. But I still want to know why mdelay can not be used. is it not available for all archs or something else? > > Here's a question for you. What kernel boot options did you use? > Specifically, for lpj= and boot_delay= ? I tried boot_delay=100 and boot_delay=200 without lpj set, The result was really slow. It was better with lpj copied from dmesg, but was still slower then mdelay. I think we can firstly use preset lpj, after delay calibrating just use the system lpj > > > > > > > x86 timer changes perhaps ? > > > --- > ~Randy > -- 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/