From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ee0-f42.google.com (mail-ee0-f42.google.com [74.125.83.42]) by kanga.kvack.org (Postfix) with ESMTP id C6BA36B0035 for ; Wed, 18 Dec 2013 08:47:54 -0500 (EST) Received: by mail-ee0-f42.google.com with SMTP id e53so3511974eek.15 for ; Wed, 18 Dec 2013 05:47:54 -0800 (PST) Received: from mx1.redhat.com (mx1.redhat.com. [209.132.183.28]) by mx.google.com with ESMTP id m44si13653eeo.247.2013.12.18.05.47.52 for ; Wed, 18 Dec 2013 05:47:53 -0800 (PST) Message-ID: <52B1A781.50002@redhat.com> Date: Wed, 18 Dec 2013 08:47:45 -0500 From: Rik van Riel MIME-Version: 1.0 Subject: Re: [RFC PATCH 0/6] Configurable fair allocation zone policy v3 References: <1387298904-8824-1-git-send-email-mgorman@suse.de> <20131217200210.GG21724@cmpxchg.org> <20131218061750.GK21724@cmpxchg.org> In-Reply-To: <20131218061750.GK21724@cmpxchg.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Johannes Weiner Cc: Mel Gorman , Andrew Morton , Dave Hansen , Linux-MM , LKML On 12/18/2013 01:17 AM, Johannes Weiner wrote: > Updated version with your tmpfs __GFP_PAGECACHE parts added and > documentation, changelog updated as necessary. I remain unconvinced > that tmpfs pages should be round-robined, but I agree with you that it > is the conservative change to do for 3.12 and 3.12 and we can figure > out the rest later. I sure hope that this doesn't drive most people > on NUMA to disable pagecache interleaving right away as I expect most > tmpfs workloads to see little to no reclaim and prefer locality... :/ Actually, I suspect most tmpfs heavy workloads will be things like databases with shared memory segments. Those tend to benefit from having all of the system's memory bandwidth available. The worker threads/processes tend to live all over the system, too... -- All rights reversed -- 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