From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ve0-f172.google.com (mail-ve0-f172.google.com [209.85.128.172]) by kanga.kvack.org (Postfix) with ESMTP id EDF486B006E for ; Fri, 28 Feb 2014 19:35:58 -0500 (EST) Received: by mail-ve0-f172.google.com with SMTP id jx11so1545402veb.3 for ; Fri, 28 Feb 2014 16:35:58 -0800 (PST) Received: from mail-vc0-x236.google.com (mail-vc0-x236.google.com [2607:f8b0:400c:c03::236]) by mx.google.com with ESMTPS id fi2si1244042vdb.62.2014.02.28.16.35.57 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Fri, 28 Feb 2014 16:35:57 -0800 (PST) Received: by mail-vc0-f182.google.com with SMTP id id10so1500875vcb.13 for ; Fri, 28 Feb 2014 16:35:57 -0800 (PST) MIME-Version: 1.0 In-Reply-To: <1393625931-2858-1-git-send-email-quning@google.com> References: <1393625931-2858-1-git-send-email-quning@google.com> From: Ning Qu Date: Fri, 28 Feb 2014 16:35:16 -0800 Message-ID: Subject: Re: [PATCH 0/1] mm, shmem: map few pages around fault address if they are in page cache Content-Type: text/plain; charset=UTF-8 Sender: owner-linux-mm@kvack.org List-ID: To: Linus Torvalds , Andrew Morton , Mel Gorman , Rik van Riel , "Kirill A. Shutemov" , Hugh Dickins Cc: Andi Kleen , Matthew Wilcox , Dave Hansen , Alexander Viro , Dave Chinner , Ning Qu , linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, Ning Qu Sorry about my fault about the experiments, here is the real one. Btw, apparently, there are still some questions about the results and I will sync with Kirill about his test command line. Below is just some simple experiment numbers from this patch, let me know if you would like more: Tested on Xeon machine with 64GiB of RAM, using the current default fault order 4. Sequential access 8GiB file Baseline with-patch 1 thread minor fault 8,389,052 4,456,530 time, seconds 9.55 8.31 Random access 8GiB file Baseline with-patch 1 thread minor fault 8,389,315 6,423,386 time, seconds 11.68 10.51 Best wishes, -- Ning Qu -- 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