From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-io0-f200.google.com (mail-io0-f200.google.com [209.85.223.200]) by kanga.kvack.org (Postfix) with ESMTP id 5ED4D6B0390 for ; Mon, 10 Apr 2017 22:00:14 -0400 (EDT) Received: by mail-io0-f200.google.com with SMTP id o79so78622567ioo.14 for ; Mon, 10 Apr 2017 19:00:14 -0700 (PDT) Received: from dggrg02-dlp.huawei.com (szxga02-in.huawei.com. [45.249.212.188]) by mx.google.com with ESMTPS id n14si1513440ioi.95.2017.04.10.19.00.12 for (version=TLS1 cipher=AES128-SHA bits=128/128); Mon, 10 Apr 2017 19:00:13 -0700 (PDT) Message-ID: <58EC375F.5040800@huawei.com> Date: Tue, 11 Apr 2017 09:54:39 +0800 From: zhong jiang MIME-Version: 1.0 Subject: Re: Page allocator order-0 optimizations merged References: <58b48b1f.F/jo2/WiSxvvGm/z%akpm@linux-foundation.org> <20170301144845.783f8cad@redhat.com> <58EB9754.3090202@huawei.com> <20170410151051.n4lytmha4tqh4l3t@techsingularity.net> In-Reply-To: <20170410151051.n4lytmha4tqh4l3t@techsingularity.net> Content-Type: text/plain; charset="ISO-8859-15" Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Mel Gorman Cc: Jesper Dangaard Brouer , "netdev@vger.kernel.org" , akpm@linux-foundation.org, linux-mm , Saeed Mahameed , Tariq Toukan On 2017/4/10 23:10, Mel Gorman wrote: > On Mon, Apr 10, 2017 at 10:31:48PM +0800, zhong jiang wrote: >> Hi, Mel >> >> The patch I had test on arm64. I find the great degradation. I test it by micro-bench. >> The patrly data is as following. and it is stable. That stands for the allocate and free time. >> > What type of allocations is the benchmark doing? In particular, what context > is the microbenchmark allocating from? Lastly, how did you isolate the > patch, did you test two specific commits in mainline or are you comparing > 4.10 with 4.11-rcX? > Hi, Mel benchmark adopt 0 order allocation. just insmod module allocate memory by alloc_pages. it is not interrupt context. I test the patch in linux 4.1 stable. In x86 , it have 10% improve. but in arm64, it have great degradation. Thanks zhongjiang -- 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