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-ASN: AS3215 2.6.0.0/16 X-Spam-Status: No, score=-3.7 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_HI, SPF_HELO_NONE,SPF_PASS shortcircuit=no autolearn=ham autolearn_force=no version=3.4.2 Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by dcvr.yhbt.net (Postfix) with ESMTP id 78A8E1F59D for ; Thu, 21 Jul 2022 13:28:25 +0000 (UTC) Authentication-Results: dcvr.yhbt.net; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="i0F3ZVIB"; dkim-atps=neutral Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229508AbiGUN2J (ORCPT ); Thu, 21 Jul 2022 09:28:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36842 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229456AbiGUN2B (ORCPT ); Thu, 21 Jul 2022 09:28:01 -0400 Received: from mail-pl1-x632.google.com (mail-pl1-x632.google.com [IPv6:2607:f8b0:4864:20::632]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7757874E3B for ; Thu, 21 Jul 2022 06:28:00 -0700 (PDT) Received: by mail-pl1-x632.google.com with SMTP id w7so1815013plp.5 for ; Thu, 21 Jul 2022 06:28:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=LONWvmsaRSaPDjHSBi8NOTXxibMQ5Yw/e9PnEl/UgKU=; b=i0F3ZVIBh4SMKq9Uy2uhT7/AJyf6mUq8gqRS+uuSvF/ZWb2oQ24cxaJXNGftbguaVM +J9kZ43xiw6/OobA7hPLitZxL9nQoNZQnqGo1J7sfepngcCquwLP625/IChIeWOxEWfI e9kIai3HaLSBe3XgfEV5IBcPwJauGVVUbvg92G84+OsKiXzJ+GKXdkddpQXiCWZL1Fs3 H3Gd7C6lYf9pDJumkpA1HkvO+t4QniR1Mer8Z/iGWF8CjJmgcWNa7VvjjcocU6sume93 eBlHjrRQ6W/A/pALdG2jQH8Wt8N3T83oI7x8iTNo9EJVEauRpWWhF767QKMIB+BEb748 fCcg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=LONWvmsaRSaPDjHSBi8NOTXxibMQ5Yw/e9PnEl/UgKU=; b=mBnoDKSeZ3naHoz7BMOdJwUbT0t+hGnZmlLLh6giw8zL5A59VbbfBJil1NzaZHlos7 I11jcD8ExwgeE4O7fSPoYRmp//r1nsBulO5Ikmvd6PTCHBq9m7LfgQwesVNG05WOpMSv C3pGJffqrzNdBMtFgSjatgL4XeRu041U3YDwK0UuEUdQqUuxG2QYP3sTq9qoUEt32Ty0 Lia92oOXnWOyeTZppYzxccj48SZXMw7aGdGft1Tgd2AZ9XmbCyAKlUZRgvjJl2A7LFDX O8YKCtOInZ8anTeMhYZCb2Qf7KnW81ea3OPulI3WvAFsREbKMzdxUdW/s9rVVp51yOGh lwPw== X-Gm-Message-State: AJIora+gtMyra0WgYmnFCTMbO93LjCgjAkVEZyT4OAJ+BG1WCkVvWhNz ap25SLPJayuQYWmx/h1Us2+13h+MTzc= X-Google-Smtp-Source: AGRyM1s5JPelJuFfXgzWpWQI32EKgkxcpe18NU70HAAU3/6qgEQbvC4jqCoo1vGfIoLfD8u4V68aiQ== X-Received: by 2002:a17:90a:8541:b0:1f2:1393:77f6 with SMTP id a1-20020a17090a854100b001f2139377f6mr11543658pjw.210.1658410079654; Thu, 21 Jul 2022 06:27:59 -0700 (PDT) Received: from localhost.localdomain ([205.204.117.102]) by smtp.gmail.com with ESMTPSA id q13-20020a65684d000000b00419cde333eesm1467326pgt.64.2022.07.21.06.27.57 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Thu, 21 Jul 2022 06:27:59 -0700 (PDT) From: "tenglong.tl" X-Google-Original-From: "tenglong.tl" To: git@vger.kernel.org Cc: gitster@pobox.com, --cc=avarab@gmail.com, git@jeffhostetler.com, tenglong.tl@alibaba-inc.com, Teng Long Subject: [PATCH 1/2] api-trace2.txt: print config key-value pair Date: Thu, 21 Jul 2022 21:27:47 +0800 Message-Id: <20220721132748.37848-2-tenglong.tl@alibaba-inc.com> X-Mailer: git-send-email 2.37.1.1.g8cbb44ffc4.dirty In-Reply-To: <20220721132748.37848-1-tenglong.tl@alibaba-inc.com> References: <20220721132748.37848-1-tenglong.tl@alibaba-inc.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org From: Teng Long It's supported to print "interesting" config key-value paire to tr2 log by setting "GIT_TRACE2_CONFIG_PARAMS" environment variable and the "trace2.configparam" config, let's add the related docs in Documentaion/technical/api-trace2.txt. Signed-off-by: Teng Long --- Documentation/technical/api-trace2.txt | 31 ++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/Documentation/technical/api-trace2.txt b/Documentation/technical/api-trace2.txt index 77a150b30e..dcd0429037 100644 --- a/Documentation/technical/api-trace2.txt +++ b/Documentation/technical/api-trace2.txt @@ -1207,6 +1207,37 @@ at offset 508. This example also shows that thread names are assigned in a racy manner as each thread starts and allocates TLS storage. +Print Configs:: + + Dump "interesting" config values to trace2 log. ++ +The environment variable `GIT_TRACE2_CONFIG_PARAMS` and configuration +`trace2.configparams` can be used to output config values which you care +about(see linkgit:git-config[1). For example: ++ +---------------- +$ git config color.ui auto +---------------- ++ +Then, mark the config `color.ui` as "interesting" config with +`GIT_TRACE2_CONFIG_PARAMS`: ++ +---------------- +$ export GIT_TRACE2_PERF_BRIEF=1 +$ export GIT_TRACE2_PERF=~/log.perf +$ export GIT_TRACE2_CONFIG_PARAMS=color.ui +$ git version +... +$ cat ~/log.perf +d0 | main | version | | | | | ... +d0 | main | start | | 0.001642 | | | /usr/local/bin/git version +d0 | main | cmd_name | | | | | version (version) +d0 | main | def_param | | | | | color.ui:auto +d0 | main | data | r0 | 0.002100 | 0.002100 | fsync | fsync/writeout-only:0 +d0 | main | data | r0 | 0.002126 | 0.002126 | fsync | fsync/hardware-flush:0 +d0 | main | exit | | 0.002142 | | | code:0 +d0 | main | atexit | | 0.002161 | | | code:0 +---------------- == Future Work === Relationship to the Existing Trace Api (api-trace.txt) -- 2.37.1.1.g8cbb44ffc4.dirty