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=-6.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,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 867FAC12002 for ; Wed, 21 Jul 2021 11:43:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5FDFB61001 for ; Wed, 21 Jul 2021 11:43:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239298AbhGULCV (ORCPT ); Wed, 21 Jul 2021 07:02:21 -0400 Received: from m43-7.mailgun.net ([69.72.43.7]:13906 "EHLO m43-7.mailgun.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238630AbhGUKx7 (ORCPT ); Wed, 21 Jul 2021 06:53:59 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1626867266; h=References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=5t2zxfusKHnDV28S1x7sohBVadjWu2fb4eMK0NRuRTQ=; b=GdCzW0gEm7H/5f5jjZj7aZMoemrpTpx1wWSKgmY5XsK2NjxyShmGLCls8fzCZYB/NUxODiER ewrdwoeiMNPKc/A3ZwPC9yvlnEP7gBLR7wXVAIRadEyjPv3V1mXG9gMvYnQqCQkLlJ/jY860 7T6TyENOvt/XHRRt6aaQ2luLwss= X-Mailgun-Sending-Ip: 69.72.43.7 X-Mailgun-Sid: WyI0MWYwYSIsICJsaW51eC1rZXJuZWxAdmdlci5rZXJuZWwub3JnIiwgImJlOWU0YSJd Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n02.prod.us-east-1.postgun.com with SMTP id 60f8064138fa9bfe9c26fbd2 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Wed, 21 Jul 2021 11:34:25 GMT Sender: vjitta=codeaurora.org@mg.codeaurora.org Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 7A67DC4360C; 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 Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=fail smtp.mailfrom=vjitta@codeaurora.org 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> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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