From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ie0-f175.google.com (mail-ie0-f175.google.com [209.85.223.175]) by kanga.kvack.org (Postfix) with ESMTP id 108526B0253 for ; Mon, 13 Jul 2015 19:03:22 -0400 (EDT) Received: by ieik3 with SMTP id k3so32877627iei.3 for ; Mon, 13 Jul 2015 16:03:21 -0700 (PDT) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org. [140.211.169.12]) by mx.google.com with ESMTPS id p103si14929251ioi.92.2015.07.13.16.03.21 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 13 Jul 2015 16:03:21 -0700 (PDT) Date: Mon, 13 Jul 2015 16:03:19 -0700 From: Andrew Morton Subject: Re: [PATCH 4/4] mm: Increase SWAP_CLUSTER_MAX to batch TLB flushes Message-Id: <20150713160319.b4cd79d4147679f2e7538cef@linux-foundation.org> In-Reply-To: <20150709081425.GU6812@suse.de> References: <1436189996-7220-1-git-send-email-mgorman@suse.de> <1436189996-7220-5-git-send-email-mgorman@suse.de> <20150707162526.c8a5e49db01a72a6dcdcf84f@linux-foundation.org> <20150709081425.GU6812@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: Rik van Riel , Dave Hansen , Ingo Molnar , Linus Torvalds , Linux-MM , LKML On Thu, 9 Jul 2015 09:14:25 +0100 Mel Gorman wrote: > Overall, I would say that none of these workloads justify the patch on > its own. Reducing IPIs further is nice but we got the bulk of the > benefit from the two batching patches and after that other factors > dominate. Based on the results I have, I'd be ok with the patch being > dropped. It can be reconsidered for evaluation if someone complains > about excessive IPIs again on reclaim intensive workloads. OK, thanks. The benefit is small and there is some risk of unanticipated problems. I think I'll park the patch in -mm for now and will wait to see if something happens. -- 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