From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf0-f200.google.com (mail-pf0-f200.google.com [209.85.192.200]) by kanga.kvack.org (Postfix) with ESMTP id 946FC6B0038 for ; Wed, 18 Jan 2017 15:23:56 -0500 (EST) Received: by mail-pf0-f200.google.com with SMTP id 80so30533684pfy.2 for ; Wed, 18 Jan 2017 12:23:56 -0800 (PST) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org. [140.211.169.12]) by mx.google.com with ESMTPS id w71si1177521pfj.282.2017.01.18.12.23.55 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 18 Jan 2017 12:23:55 -0800 (PST) Date: Wed, 18 Jan 2017 12:23:54 -0800 From: Andrew Morton Subject: Re: + mm-swap-add-cluster-lock-v5.patch added to -mm tree Message-Id: <20170118122354.9b06459e2588e53b537ca78c@linux-foundation.org> In-Reply-To: <20170118083731.GF7015@dhcp22.suse.cz> References: <587eaca3.MRSwND8OEi+lF+VH%akpm@linux-foundation.org> <20170118083731.GF7015@dhcp22.suse.cz> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Michal Hocko Cc: ying.huang@intel.com, aarcange@redhat.com, aaron.lu@intel.com, ak@linux.intel.com, borntraeger@de.ibm.com, corbet@lwn.net, dave.hansen@intel.com, hannes@cmpxchg.org, hillf.zj@alibaba-inc.com, hughd@google.com, kirill.shutemov@linux.intel.com, minchan@kernel.org, riel@redhat.com, shli@kernel.org, tim.c.chen@linux.intel.com, vdavydov.dev@gmail.com, mm-commits@vger.kernel.org, linux-mm@kvack.org On Wed, 18 Jan 2017 09:37:31 +0100 Michal Hocko wrote: > On Tue 17-01-17 15:45:39, Andrew Morton wrote: > [...] > > From: "Huang\, Ying" > > Subject: mm-swap-add-cluster-lock-v5 > > I assume you are going to fold this into the original patch. Do you > think it would make sense to have it in a separate patch along with > the reasoning provided via email? It should be OK - the v5 changelog (which I shall use for the folded patch, as usual) has : Compared with a previous implementation using bit_spin_lock, the : sequential swap out throughput improved about 3.2%. Test was done on a : Xeon E5 v3 system. The swap device used is a RAM simulated PMEM : (persistent memory) device. To test the sequential swapping out, the test : case created 32 processes, which sequentially allocate and write to the : anonymous pages until the RAM and part of the swap device is used. -- 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