From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on dcvr.yhbt.net X-Spam-Level: X-Spam-Status: No, score=-3.6 required=3.0 tests=AWL,BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,RCVD_IN_DNSWL_BLOCKED, SPF_HELO_PASS,SPF_PASS shortcircuit=no autolearn=ham autolearn_force=no version=3.4.2 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by dcvr.yhbt.net (Postfix) with ESMTP id 8707A1F4B4 for ; Fri, 8 Jan 2021 20:54:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729048AbhAHUwQ (ORCPT ); Fri, 8 Jan 2021 15:52:16 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58134 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728222AbhAHUwP (ORCPT ); Fri, 8 Jan 2021 15:52:15 -0500 Received: from mail-oi1-x230.google.com (mail-oi1-x230.google.com [IPv6:2607:f8b0:4864:20::230]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 337E1C061380 for ; Fri, 8 Jan 2021 12:51:35 -0800 (PST) Received: by mail-oi1-x230.google.com with SMTP id 9so12829205oiq.3 for ; Fri, 08 Jan 2021 12:51:35 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=qNvEI0tJ0zWJQx0WsRHwONvn/99wSDQoT5RlcI1qHcg=; b=GKTl6LrMvxmbGCsVoUkAbs3IFBAliV75tAK1x98FaBNM7wajtAJAk5zpynnHBtymYr Web8Eut7Hfw7nZOWnEZ750EI2cM9ubrqEUdx9TDjMlx/myonj6IqAYxJAf6HrJTCUFpV GaB1nCt0j3+krqERnarC6cejB/mqVxxm5eyMM9ZtDvgT/jHWwm6eU5fwfrB4T2Jv6nmm Gu5bFpIjtmwwdLYQ6KntaCQwkv2n8BikqWqct6AqN09HukcTmiM8Egz1ZNZDtwzTlEYu igOMzJouE39XAeMKblDSz/5Tdjbhjh99jZYwutkCzw1vL5OfwcDey3QWoSOHGrNNe7pB zZVg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=qNvEI0tJ0zWJQx0WsRHwONvn/99wSDQoT5RlcI1qHcg=; b=d6bC0DloY4mmKT9NounSLJaOnDZ5edxaizw8LcUrVnhMct1Nuxj6q5rWigqmgfwBUN ZFaRqkjB8QyXp4UUgpb09Hp/CKc7svrVC/ExTI1LDhW/qbwNR1dD3aw8Cu/q3YD50yus PJAv4iM594tDRbzCiBjICKlMVpkqpUEktmSlX7OFW/jIA87rnCo0KOS51o+/n9U3MayY tI/DkJqhYLp8iDBSucpDTLl7u8tGsQkUMLLwwTAfJn0kKPqhyl+2PxkSaxlnV149tzrA XBFSegkAsLSoIs07UdD7L8dhhpfiXK14v/Xc+y8Ay30wVNuZXkOl+MhoNIqDsxHD7kH7 qvrQ== X-Gm-Message-State: AOAM531Ea58aCIT21tFkFV/oRXbNml4wV9bxZ31eUaogBrxHVCmageJ7 niK8AcN/VquT3Gnj3rD+TXpOw+ZMpfc= X-Google-Smtp-Source: ABdhPJygybIL6BqGOSVXcY8hTx8C+Bj8b/HI2huPdPYRBGC4ajlUfJs8/olwvcki4h2P60rK2mBONA== X-Received: by 2002:a54:4899:: with SMTP id r25mr3403493oic.28.1610139094303; Fri, 08 Jan 2021 12:51:34 -0800 (PST) Received: from tiger.attlocal.net ([2600:1700:bae0:2de0::26]) by smtp.gmail.com with ESMTPSA id j10sm2018817otn.63.2021.01.08.12.51.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 08 Jan 2021 12:51:33 -0800 (PST) From: Elijah Newren To: git@vger.kernel.org Cc: Derrick Stolee , Jeff King , Jonathan Nieder , Jonathan Tan , Taylor Blau , Elijah Newren Subject: [PATCH 0/1] And so it begins...merge/rename performance work Date: Fri, 8 Jan 2021 12:51:10 -0800 Message-Id: <20210108205111.2197944-1-newren@gmail.com> X-Mailer: git-send-email 2.29.2.542.g6f8bc064c5 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org This depends on a merge of en/ort-conflict-handling, en/diffcore-rename, and en/ort-directory-rename. This series begins the performance work for merge-ort and diffcore-rename. This series only has one patch and all it does is add trace2_region enter/leave pairs -- but it comes with a lengthy commit message detailing my driving testcases, the current status, and my plans. Part of the point of the lengthy testcase description is it will allow me to repeatedly refer to it in subsequent series' commit messages with a paragraph of the form: For the testcases mentioned in commit 9542932eee ("merge-ort: begin performance work; instrument with trace2_region_* calls", 2020-10-28), this change improves the performance as follows: Before After no-renames: 12.975 s ± 0.037 s 12.904 s ± 0.069 s mega-renames: 5154.338 s ± 19.139 s 1670.582 s ± 0.904 s just-one-mega: 146.703 s ± 0.852 s 48.149 s ± 0.306 s Elijah Newren (1): merge-ort: begin performance work; instrument with trace2_region_* calls diffcore-rename.c | 8 +++++++ merge-ort.c | 57 +++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 65 insertions(+) -- 2.29.1.107.g69489f3566