From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 223CAC636C9 for ; Wed, 21 Jul 2021 14:00:35 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id B8E7061241 for ; Wed, 21 Jul 2021 14:00:34 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B8E7061241 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id AC94B6B0078; Wed, 21 Jul 2021 10:00:33 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id A29D06B0081; Wed, 21 Jul 2021 10:00:33 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 87BEB6B0082; Wed, 21 Jul 2021 10:00:33 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0172.hostedemail.com [216.40.44.172]) by kanga.kvack.org (Postfix) with ESMTP id 613E26B0078 for ; Wed, 21 Jul 2021 10:00:33 -0400 (EDT) Received: from forelay.prod.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by fograve03.hostedemail.com (Postfix) with ESMTP id 0F22D18565673 for ; Wed, 21 Jul 2021 11:34:58 +0000 (UTC) Received: from smtpin06.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id A15768248076 for ; Wed, 21 Jul 2021 11:34:57 +0000 (UTC) X-FDA: 78386388234.06.822899D Received: from m43-7.mailgun.net (m43-7.mailgun.net [69.72.43.7]) by imf13.hostedemail.com (Postfix) with ESMTP id AC80B100603B for ; Wed, 21 Jul 2021 11:34:54 +0000 (UTC) DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1626867297; h=References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=5t2zxfusKHnDV28S1x7sohBVadjWu2fb4eMK0NRuRTQ=; b=ONB+tLhwBO1ezS2vVGsCj1MithBckUAUXRkZw52ZosFgfp1PzE5itcSotj+yenoyytv8BfUH buhJz8saO6EPf6kCZMJuyVa7gYOBXu9vneIZRmNhQYUW7DkReXIqYmYr6U3Yp+xMruWJ9ams 6AL8LiBjDC4PME7vPbiGi5ujblM= X-Mailgun-Sending-Ip: 69.72.43.7 X-Mailgun-Sid: WyIwY2Q3OCIsICJsaW51eC1tbUBrdmFjay5vcmciLCAiYmU5ZTRhIl0= Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n01.prod.us-west-2.postgun.com with SMTP id 60f80640e81205dd0a25b6f2 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Wed, 21 Jul 2021 11:34:24 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 3DB56C43460; Wed, 21 Jul 2021 11:34:24 +0000 (UTC) Received: from vjitta-linux.qualcomm.com (unknown [202.46.22.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: vjitta) by smtp.codeaurora.org (Postfix) with ESMTPSA id 06470C433D3; Wed, 21 Jul 2021 11:34:18 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 06470C433D3 From: vjitta@codeaurora.org To: michel@lespinasse.org, linux-mm@kvack.org Cc: ldufour@linux.ibm.com, peterz@infradead.org, mhocko@suse.com, willy@infradead.org, riel@surriel.com, paulmck@kernel.org, akpm@linux-foundation.org, surenb@google.com, joelaf@google.com, romlem@google.com, linux-kernel@vger.kernel.org, vinmenon@codeaurora.org, Vijayanand Jitta Subject: Re: [RFC PATCH 00/37] Speculative page faults Date: Wed, 21 Jul 2021 17:03:27 +0530 Message-Id: <1626867208-9367-1-git-send-email-vjitta@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <20210407014502.24091-1-michel@lespinasse.org> References: <20210407014502.24091-1-michel@lespinasse.org> Authentication-Results: imf13.hostedemail.com; dkim=pass header.d=mg.codeaurora.org header.s=smtp header.b=ONB+tLhw; spf=pass (imf13.hostedemail.com: domain of bounce@mg.codeaurora.org designates 69.72.43.7 as permitted sender) smtp.mailfrom=bounce@mg.codeaurora.org; dmarc=none X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: AC80B100603B X-Stat-Signature: tytf39hs7h8e9aqaaipdprcicukjzo39 X-HE-Tag: 1626867294-626978 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000028, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: Vijayanand Jitta We have tried out the SPF patch series on our code base and have seen significant improvements in app launch latency and ebizzy tests. Please find the results below. App launch latency (in ms) : Apps w/o spf with spf % improvement -------------------------------------------------------- Changba 1531 1252 18.2 Taobao 1813 1506 16.9 QQlive 1966 1775 9.7 Ebizzy test (ebizzy_64 -mRTt 8) : ebizzy_64 -mRTt 8 w/o spf with spf % improvement -------------------------------------------------------------- Avg_records_count 2455 2717 10.7 Avg_real_time 10 10 - Avg_user_time 0.74 0.66 10.8 Avg_sys_time 12.2 11.6 4.9 So, getting this series mainlined would be of great help. Thanks, Vijay -- QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation