From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf0-f197.google.com (mail-pf0-f197.google.com [209.85.192.197]) by kanga.kvack.org (Postfix) with ESMTP id 637AF6B038B for ; Thu, 16 Mar 2017 10:14:29 -0400 (EDT) Received: by mail-pf0-f197.google.com with SMTP id p189so6715823pfp.5 for ; Thu, 16 Mar 2017 07:14:29 -0700 (PDT) Received: from mga01.intel.com (mga01.intel.com. [192.55.52.88]) by mx.google.com with ESMTPS id s5si5427182pgj.372.2017.03.16.07.14.28 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 16 Mar 2017 07:14:28 -0700 (PDT) Date: Thu, 16 Mar 2017 22:14:38 +0800 From: Aaron Lu Subject: Re: [PATCH v2 0/5] mm: support parallel free of memory Message-ID: <20170316141437.GA16038@aaronlu.sh.intel.com> References: <1489568404-7817-1-git-send-email-aaron.lu@intel.com> <20170315141813.GB32626@dhcp22.suse.cz> <20170315154406.GF2442@aaronlu.sh.intel.com> <20170315162843.GA27197@dhcp22.suse.cz> <20170316073403.GE1661@aaronlu.sh.intel.com> <20170316135122.GF13054@aaronlu.sh.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20170316135122.GF13054@aaronlu.sh.intel.com> Sender: owner-linux-mm@kvack.org List-ID: To: linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: Michal Hocko , Dave Hansen , Tim Chen , Andrew Morton , Ying Huang On Thu, Mar 16, 2017 at 09:51:22PM +0800, Aaron Lu wrote: > Considering that we are mostly improving for memory intensive apps, the > default setting should probably be: max_active = node_number with each > worker freeing 2G memory. In case people want to give this setting a try, here is what to do. On 2-nodes EP: # echo 2 > /sys/devices/virtual/workqueue/batch_free_wq/max_active # echo 1030 > /sys/kernel/debug/parallel_free/max_gather_batch_count On 4-nodes EX: # echo 4 > /sys/devices/virtual/workqueue/batch_free_wq/max_active # echo 1030 > /sys/kernel/debug/parallel_free/max_gather_batch_count -- 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