Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753751AbbDMK3b (ORCPT ); Mon, 13 Apr 2015 06:29:31 -0400 Received: from cantor2.suse.de ([195.135.220.15]:56797 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753437AbbDMK3a (ORCPT ); Mon, 13 Apr 2015 06:29:30 -0400 Date: Mon, 13 Apr 2015 11:29:24 +0100 From: Mel Gorman To: Linux-MM Cc: Nathan Zimmer , Daniel Rahn , Davidlohr Bueso , Dave Hansen , Tom Vaden , Scott Norton , LKML Subject: Re: [RFC PATCH 0/14] Parallel memory initialisation Message-ID: <20150413102924.GC14842@suse.de> References: <1428920226-18147-1-git-send-email-mgorman@suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-15 Content-Disposition: inline In-Reply-To: <1428920226-18147-1-git-send-email-mgorman@suse.de> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1341 Lines: 26 On Mon, Apr 13, 2015 at 11:16:52AM +0100, Mel Gorman wrote: > Memory initialisation had been identified as one of the reasons why large > machines take a long time to boot. Patches were posted a long time ago > that attempted to move deferred initialisation into the page allocator > paths. This was rejected on the grounds it should not be necessary to hurt > the fast paths to parallelise initialisation. This series reuses much of > the work from that time but defers the initialisation of memory to kswapd > so that one thread per node initialises memory local to that node. The > issue is that on the machines I tested with, memory initialisation was not > a major contributor to boot times. I'm posting the RFC to both review the > series and see if it actually helps users of very large machines. > Robin Holt's address now bounces so remove the address from any replies. If anyone has an updated address for him that he wants to use then let me know. Otherwise, I'll leave the From's and Signed-offs from him as the old address as it was accurate at the time. -- Mel Gorman SUSE Labs -- 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/