From patchwork Mon Jun 3 20:18:20 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Philippe Blain via GitGitGadget X-Patchwork-Id: 10973947 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 9BE121515 for ; Mon, 3 Jun 2019 20:18:27 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8C4CD287B7 for ; Mon, 3 Jun 2019 20:18:27 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 80C1C2874B; Mon, 3 Jun 2019 20:18:27 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FROM,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 10BDA281C3 for ; Mon, 3 Jun 2019 20:18:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726828AbfFCUS0 (ORCPT ); Mon, 3 Jun 2019 16:18:26 -0400 Received: from mail-ed1-f66.google.com ([209.85.208.66]:45076 "EHLO mail-ed1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726685AbfFCUSX (ORCPT ); Mon, 3 Jun 2019 16:18:23 -0400 Received: by mail-ed1-f66.google.com with SMTP id f20so28558697edt.12 for ; Mon, 03 Jun 2019 13:18:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:message-id:in-reply-to:references:from:subject:fcc :content-transfer-encoding:mime-version:to:cc; bh=jsy8sX9BKSrzPQtmLrNXXGnWG38hAkMUnkOubuKiEVs=; b=NF22jSFmBxTuNeHgyBqq5auX6HrW9cBQ3Fqnw8GcxKHCz+ToBpGxoMjG8PlsIG6svZ R2CZDphKDHZVpqeAc83KOkSUrnMMUAjriqHdMiXCOVd44rLzW5Z8SgkLABpGVWfPhJ6x ytZUixHZOmSkXlEvPMERDzGj6GJSLVYLlwO7g5yJ35K3CFEULsG10RDK16maukv9M1V3 ShR7ouXhr3vN5bsS407R4BNEFFIu763ZlvrEOLJVILP65IXlEM/Zi2Cxj5a3hw/A7ARN uKxKBP6jVBIwuWJiThul1wQS3CmyRjKT3Y5J5ap8ppj6tHgF0hS+T4LohhsxTC1qn97e bMIw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:message-id:in-reply-to:references:from :subject:fcc:content-transfer-encoding:mime-version:to:cc; bh=jsy8sX9BKSrzPQtmLrNXXGnWG38hAkMUnkOubuKiEVs=; b=IWmeVSAs0V+hmqiGuJ2tHoaaQygl9p3bVYqF3Bj4Vw4dAxkX6fuzYtO5eqPprXUxM8 m4lKFOefmyB9gL2WLB0D2EPfbvM/QeKRhiwak6SGVPqpdVAuSq5aAwR3dnzShVvh+ddl gwAsV1ABoMxCqeHCQHqPG+fYZrqDe+3Wg3h6c4T46JNppEUm9haxUGfqFofyHmv1X/bt lnu9PlwRDxjK2JFP8fniSrthphYfD7V3XxyZ/YeGceS8hsB4Pm27FaDDqSvZFSgGXULl HpLyE/4wki4tIMYxd5DHA2n1QeEVNb5a+Kca6dmpsn6Hx5ULJu+7C/cqpVVeuIOLqAYF VFRQ== X-Gm-Message-State: APjAAAUHyOXTNT3Uov/CQFAz4ztXlI86F/uiYQ+X8urAA8gTC6uWkFAp pimwKumeACfWOHRHOYeg0wwAkHXn X-Google-Smtp-Source: APXvYqxsNBt3gwbMZjIIKXemJO+mGRA9SIBaoZCFIyiWDInAQjEcRPmyMRWB0XnXC8QiLWTHKAzxrQ== X-Received: by 2002:a50:926d:: with SMTP id j42mr12385745eda.237.1559593100511; Mon, 03 Jun 2019 13:18:20 -0700 (PDT) Received: from [127.0.0.1] ([13.74.141.28]) by smtp.gmail.com with ESMTPSA id r14sm2797198ejb.54.2019.06.03.13.18.19 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 03 Jun 2019 13:18:20 -0700 (PDT) Date: Mon, 03 Jun 2019 13:18:20 -0700 (PDT) X-Google-Original-Date: Mon, 03 Jun 2019 20:18:08 GMT Message-Id: In-Reply-To: References: From: "Derrick Stolee via GitGitGadget" Subject: [PATCH 02/11] repo-settings: use index.version=4 by default Fcc: Sent MIME-Version: 1.0 To: git@vger.kernel.org Cc: Junio C Hamano , Derrick Stolee Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Derrick Stolee If a repo is large, it likely has many paths in its working directory. This means the index could be compressed using version 4. Set this as a default when core.size=large. Signed-off-by: Derrick Stolee --- Documentation/config/core.txt | 3 +++ Documentation/config/index.txt | 1 + read-cache.c | 12 +++++++----- repo-settings.c | 6 ++++++ repo-settings.h | 1 + 5 files changed, 18 insertions(+), 5 deletions(-) diff --git a/Documentation/config/core.txt b/Documentation/config/core.txt index 1a188db620..ea64f675fa 100644 --- a/Documentation/config/core.txt +++ b/Documentation/config/core.txt @@ -613,3 +613,6 @@ core.size:: + * `gc.writeCommitGraph=true` eneables writing commit-graph files during `git gc`. ++ +* `index.version=4` uses prefix-compression to reduce the size of the +.git/index file. diff --git a/Documentation/config/index.txt b/Documentation/config/index.txt index f181503041..d4b56925c4 100644 --- a/Documentation/config/index.txt +++ b/Documentation/config/index.txt @@ -24,3 +24,4 @@ index.threads:: index.version:: Specify the version with which new index files should be initialized. This does not affect existing repositories. + If `core.size=large`, then the default value is 4. diff --git a/read-cache.c b/read-cache.c index 22e7b9944e..7fab8ff748 100644 --- a/read-cache.c +++ b/read-cache.c @@ -25,6 +25,7 @@ #include "fsmonitor.h" #include "thread-utils.h" #include "progress.h" +#include "repo-settings.h" /* Mask for the name length in ce_flags in the on-disk index */ @@ -1599,16 +1600,17 @@ struct cache_entry *refresh_cache_entry(struct index_state *istate, #define INDEX_FORMAT_DEFAULT 3 -static unsigned int get_index_format_default(void) +static unsigned int get_index_format_default(struct repository *r) { char *envversion = getenv("GIT_INDEX_VERSION"); char *endp; - int value; unsigned int version = INDEX_FORMAT_DEFAULT; if (!envversion) { - if (!git_config_get_int("index.version", &value)) - version = value; + prepare_repo_settings(r); + + if (r->settings->index_version >= 0) + version = r->settings->index_version; if (version < INDEX_FORMAT_LB || INDEX_FORMAT_UB < version) { warning(_("index.version set, but the value is invalid.\n" "Using version %i"), INDEX_FORMAT_DEFAULT); @@ -2765,7 +2767,7 @@ static int do_write_index(struct index_state *istate, struct tempfile *tempfile, } if (!istate->version) { - istate->version = get_index_format_default(); + istate->version = get_index_format_default(the_repository); if (git_env_bool("GIT_TEST_SPLIT_INDEX", 0)) init_split_index(istate); } diff --git a/repo-settings.c b/repo-settings.c index 6f5e18d92e..7e6e65d60c 100644 --- a/repo-settings.c +++ b/repo-settings.c @@ -14,6 +14,7 @@ static int git_repo_config(const char *key, const char *value, void *cb) if (!strcmp(value, "large")) { UPDATE_DEFAULT(rs->core_commit_graph, 1); UPDATE_DEFAULT(rs->gc_write_commit_graph, 1); + UPDATE_DEFAULT(rs->index_version, 4); } return 0; } @@ -25,6 +26,10 @@ static int git_repo_config(const char *key, const char *value, void *cb) rs->gc_write_commit_graph = git_config_bool(key, value); return 0; } + if (!strcmp(key, "index.version")) { + rs->index_version = git_config_int(key, value); + return 0; + } return 1; } @@ -39,6 +44,7 @@ void prepare_repo_settings(struct repository *r) /* Defaults */ r->settings->core_commit_graph = -1; r->settings->gc_write_commit_graph = -1; + r->settings->index_version = -1; repo_config(r, git_repo_config, r->settings); } diff --git a/repo-settings.h b/repo-settings.h index 11d08648e1..9b8104042e 100644 --- a/repo-settings.h +++ b/repo-settings.h @@ -4,6 +4,7 @@ struct repo_settings { char core_commit_graph; char gc_write_commit_graph; + int index_version; }; struct repository;