From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wg0-f49.google.com (mail-wg0-f49.google.com [74.125.82.49]) by kanga.kvack.org (Postfix) with ESMTP id A95FD6B006C for ; Wed, 15 Apr 2015 10:27:46 -0400 (EDT) Received: by wgyo15 with SMTP id o15so48971302wgy.2 for ; Wed, 15 Apr 2015 07:27:46 -0700 (PDT) Received: from casper.infradead.org (casper.infradead.org. [2001:770:15f::2]) by mx.google.com with ESMTPS id dd10si8441434wjb.53.2015.04.15.07.27.44 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 15 Apr 2015 07:27:45 -0700 (PDT) Date: Wed, 15 Apr 2015 16:27:31 +0200 From: Peter Zijlstra Subject: Re: [RFC PATCH 0/14] Parallel memory initialisation Message-ID: <20150415142731.GI17717@twins.programming.kicks-ass.net> References: <1428920226-18147-1-git-send-email-mgorman@suse.de> <552E6486.6070705@hp.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <552E6486.6070705@hp.com> Sender: owner-linux-mm@kvack.org List-ID: To: Waiman Long Cc: Mel Gorman , Linux-MM , Robin Holt , Nathan Zimmer , Daniel Rahn , Davidlohr Bueso , Dave Hansen , Tom Vaden , Scott Norton , LKML On Wed, Apr 15, 2015 at 09:15:50AM -0400, Waiman Long wrote: > I had included your patch with the 4.0 kernel and booted up a 16-socket > 12-TB machine. I measured the elapsed time from the elilo prompt to the > availability of ssh login. Without the patch, the bootup time was 404s. It > was reduced to 298s with the patch. So there was about 100s reduction in > bootup time (1/4 of the total). But you cheat! :-) How long between power on and the elilo prompt? Do the 100 seconds matter on that time scale? -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org