From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail6.bemta12.messagelabs.com (mail6.bemta12.messagelabs.com [216.82.250.247]) by kanga.kvack.org (Postfix) with ESMTP id 261336B002D for ; Thu, 10 Nov 2011 18:12:15 -0500 (EST) Date: Thu, 10 Nov 2011 15:12:11 -0800 From: Andrew Morton Subject: Re: [PATCH] mm: Do not stall in synchronous compaction for THP allocations Message-Id: <20111110151211.523fa185.akpm@linux-foundation.org> In-Reply-To: <20111110161331.GG3083@suse.de> References: <20111110100616.GD3083@suse.de> <20111110142202.GE3083@suse.de> <20111110161331.GG3083@suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Mel Gorman Cc: Minchan Kim , Jan Kara , Andy Isaacson , Johannes Weiner , Andrea Arcangeli , linux-kernel@vger.kernel.org, linux-mm@kvack.org On Thu, 10 Nov 2011 16:13:31 +0000 Mel Gorman wrote: > This patch once again prevents sync migration for transparent > hugepage allocations as it is preferable to fail a THP allocation > than stall. Who said? ;) Presumably some people would prefer to get lots of huge pages for their 1000-hour compute job, and waiting a bit to get those pages is acceptable. Do we have the accounting in place for us to be able to determine how many huge page allocation attempts failed due to this change? -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org