git-maintenance.html

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 735 <body class="manpage">
 736 <div id="header">
 737 <h1>
 738 git-maintenance(1) Manual Page
 739 </h1>
 740 <h2>NAME</h2>
 741 <div class="sectionbody">
 742 <p>git-maintenance -
 743    Run tasks to optimize Git repository data
 744 </p>
 745 </div>
 746 </div>
 747 <div id="content">
 748 <div class="sect1">
 749 <h2 id="_synopsis">SYNOPSIS</h2>
 750 <div class="sectionbody">
 751 <div class="verseblock">
 752 <pre class="content"><em>git maintenance</em> run [&lt;options&gt;]
 753 <em>git maintenance</em> start [--scheduler=&lt;scheduler&gt;]
 754 <em>git maintenance</em> (stop|register|unregister) [&lt;options&gt;]</pre>
 755 <div class="attribution">
 756 </div></div>
 757 </div>
 758 </div>
 759 <div class="sect1">
 760 <h2 id="_description">DESCRIPTION</h2>
 761 <div class="sectionbody">
 762 <div class="paragraph"><p>Run tasks to optimize Git repository data, speeding up other Git commands
 763 and reducing storage requirements for the repository.</p></div>
 764 <div class="paragraph"><p>Git commands that add repository data, such as <code>git add</code> or <code>git fetch</code>,
 765 are optimized for a responsive user experience. These commands do not take
 766 time to optimize the Git data, since such optimizations scale with the full
 767 size of the repository while these user commands each perform a relatively
 768 small action.</p></div>
 769 <div class="paragraph"><p>The <code>git maintenance</code> command provides flexibility for how to optimize the
 770 Git repository.</p></div>
 771 </div>
 772 </div>
 773 <div class="sect1">
 774 <h2 id="_subcommands">SUBCOMMANDS</h2>
 775 <div class="sectionbody">
 776 <div class="dlist"><dl>
 777 <dt class="hdlist1">
 778 run
 779 </dt>
 780 <dd>
 781 <p>
 782         Run one or more maintenance tasks. If one or more <code>--task</code> options
 783         are specified, then those tasks are run in that order. Otherwise,
 784         the tasks are determined by which <code>maintenance.&lt;task&gt;.enabled</code>
 785         config options are true. By default, only <code>maintenance.gc.enabled</code>
 786         is true.
 787 </p>
 788 </dd>
 789 <dt class="hdlist1">
 790 start
 791 </dt>
 792 <dd>
 793 <p>
 794         Start running maintenance on the current repository. This performs
 795         the same config updates as the <code>register</code> subcommand, then updates
 796         the background scheduler to run <code>git maintenance run --scheduled</code>
 797         on an hourly basis.
 798 </p>
 799 </dd>
 800 <dt class="hdlist1">
 801 stop
 802 </dt>
 803 <dd>
 804 <p>
 805         Halt the background maintenance schedule. The current repository
 806         is not removed from the list of maintained repositories, in case
 807         the background maintenance is restarted later.
 808 </p>
 809 </dd>
 810 <dt class="hdlist1">
 811 register
 812 </dt>
 813 <dd>
 814 <p>
 815         Initialize Git config values so any scheduled maintenance will start
 816         running on this repository. This adds the repository to the
 817         <code>maintenance.repo</code> config variable in the current user&#8217;s global config,
 818         or the config specified by --config-file option, and enables some
 819         recommended configuration values for <code>maintenance.&lt;task&gt;.schedule</code>. The
 820         tasks that are enabled are safe for running in the background without
 821         disrupting foreground processes.
 822 </p>
 823 <div class="paragraph"><p>The <code>register</code> subcommand will also set the <code>maintenance.strategy</code> config
 824 value to <code>incremental</code>, if this value is not previously set. The
 825 <code>incremental</code> strategy uses the following schedule for each maintenance
 826 task:</p></div>
 827 <div class="openblock">
 828 <div class="content">
 829 <div class="ulist"><ul>
 830 <li>
 831 <p>
 832 <code>gc</code>: disabled.
 833 </p>
 834 </li>
 835 <li>
 836 <p>
 837 <code>commit-graph</code>: hourly.
 838 </p>
 839 </li>
 840 <li>
 841 <p>
 842 <code>prefetch</code>: hourly.
 843 </p>
 844 </li>
 845 <li>
 846 <p>
 847 <code>loose-objects</code>: daily.
 848 </p>
 849 </li>
 850 <li>
 851 <p>
 852 <code>incremental-repack</code>: daily.
 853 </p>
 854 </li>
 855 </ul></div>
 856 </div></div>
 857 <div class="paragraph"><p><code>git maintenance register</code> will also disable foreground maintenance by
 858 setting <code>maintenance.auto = false</code> in the current repository. This config
 859 setting will remain after a <code>git maintenance unregister</code> command.</p></div>
 860 </dd>
 861 <dt class="hdlist1">
 862 unregister
 863 </dt>
 864 <dd>
 865 <p>
 866         Remove the current repository from background maintenance. This
 867         only removes the repository from the configured list. It does not
 868         stop the background maintenance processes from running.
 869 </p>
 870 <div class="paragraph"><p>The <code>unregister</code> subcommand will report an error if the current repository
 871 is not already registered. Use the <code>--force</code> option to return success even
 872 when the current repository is not registered.</p></div>
 873 </dd>
 874 </dl></div>
 875 </div>
 876 </div>
 877 <div class="sect1">
 878 <h2 id="_tasks">TASKS</h2>
 879 <div class="sectionbody">
 880 <div class="dlist"><dl>
 881 <dt class="hdlist1">
 882 commit-graph
 883 </dt>
 884 <dd>
 885 <p>
 886         The <code>commit-graph</code> job updates the <code>commit-graph</code> files incrementally,
 887         then verifies that the written data is correct. The incremental
 888         write is safe to run alongside concurrent Git processes since it
 889         will not expire <code>.graph</code> files that were in the previous
 890         <code>commit-graph-chain</code> file. They will be deleted by a later run based
 891         on the expiration delay.
 892 </p>
 893 </dd>
 894 <dt class="hdlist1">
 895 prefetch
 896 </dt>
 897 <dd>
 898 <p>
 899         The <code>prefetch</code> task updates the object directory with the latest
 900         objects from all registered remotes. For each remote, a <code>git fetch</code>
 901         command is run. The configured refspec is modified to place all
 902         requested refs within <code>refs/prefetch/</code>. Also, tags are not updated.
 903 </p>
 904 <div class="paragraph"><p>This is done to avoid disrupting the remote-tracking branches. The end users
 905 expect these refs to stay unmoved unless they initiate a fetch.  With prefetch
 906 task, however, the objects necessary to complete a later real fetch would
 907 already be obtained, so the real fetch would go faster.  In the ideal case,
 908 it will just become an update to a bunch of remote-tracking branches without
 909 any object transfer.</p></div>
 910 </dd>
 911 <dt class="hdlist1">
 912 gc
 913 </dt>
 914 <dd>
 915 <p>
 916         Clean up unnecessary files and optimize the local repository. "GC"
 917         stands for "garbage collection," but this task performs many
 918         smaller tasks. This task can be expensive for large repositories,
 919         as it repacks all Git objects into a single pack-file. It can also
 920         be disruptive in some situations, as it deletes stale data. See
 921         <a href="git-gc.html">git-gc(1)</a> for more details on garbage collection in Git.
 922 </p>
 923 </dd>
 924 <dt class="hdlist1">
 925 loose-objects
 926 </dt>
 927 <dd>
 928 <p>
 929         The <code>loose-objects</code> job cleans up loose objects and places them into
 930         pack-files. In order to prevent race conditions with concurrent Git
 931         commands, it follows a two-step process. First, it deletes any loose
 932         objects that already exist in a pack-file; concurrent Git processes
 933         will examine the pack-file for the object data instead of the loose
 934         object. Second, it creates a new pack-file (starting with "loose-")
 935         containing a batch of loose objects. The batch size is limited to 50
 936         thousand objects to prevent the job from taking too long on a
 937         repository with many loose objects. The <code>gc</code> task writes unreachable
 938         objects as loose objects to be cleaned up by a later step only if
 939         they are not re-added to a pack-file; for this reason it is not
 940         advisable to enable both the <code>loose-objects</code> and <code>gc</code> tasks at the
 941         same time.
 942 </p>
 943 </dd>
 944 <dt class="hdlist1">
 945 incremental-repack
 946 </dt>
 947 <dd>
 948 <p>
 949         The <code>incremental-repack</code> job repacks the object directory
 950         using the <code>multi-pack-index</code> feature. In order to prevent race
 951         conditions with concurrent Git commands, it follows a two-step
 952         process. First, it calls <code>git multi-pack-index expire</code> to delete
 953         pack-files unreferenced by the <code>multi-pack-index</code> file. Second, it
 954         calls <code>git multi-pack-index repack</code> to select several small
 955         pack-files and repack them into a bigger one, and then update the
 956         <code>multi-pack-index</code> entries that refer to the small pack-files to
 957         refer to the new pack-file. This prepares those small pack-files
 958         for deletion upon the next run of <code>git multi-pack-index expire</code>.
 959         The selection of the small pack-files is such that the expected
 960         size of the big pack-file is at least the batch size; see the
 961         <code>--batch-size</code> option for the <code>repack</code> subcommand in
 962         <a href="git-multi-pack-index.html">git-multi-pack-index(1)</a>. The default batch-size is zero,
 963         which is a special case that attempts to repack all pack-files
 964         into a single pack-file.
 965 </p>
 966 </dd>
 967 <dt class="hdlist1">
 968 pack-refs
 969 </dt>
 970 <dd>
 971 <p>
 972         The <code>pack-refs</code> task collects the loose reference files and
 973         collects them into a single file. This speeds up operations that
 974         need to iterate across many references. See <a href="git-pack-refs.html">git-pack-refs(1)</a>
 975         for more information.
 976 </p>
 977 </dd>
 978 </dl></div>
 979 </div>
 980 </div>
 981 <div class="sect1">
 982 <h2 id="_options">OPTIONS</h2>
 983 <div class="sectionbody">
 984 <div class="dlist"><dl>
 985 <dt class="hdlist1">
 986 --auto
 987 </dt>
 988 <dd>
 989 <p>
 990         When combined with the <code>run</code> subcommand, run maintenance tasks
 991         only if certain thresholds are met. For example, the <code>gc</code> task
 992         runs when the number of loose objects exceeds the number stored
 993         in the <code>gc.auto</code> config setting, or when the number of pack-files
 994         exceeds the <code>gc.autoPackLimit</code> config setting. Not compatible with
 995         the <code>--schedule</code> option.
 996 </p>
 997 </dd>
 998 <dt class="hdlist1">
 999 --schedule
1000 </dt>
1001 <dd>
1002 <p>
1003         When combined with the <code>run</code> subcommand, run maintenance tasks
1004         only if certain time conditions are met, as specified by the
1005         <code>maintenance.&lt;task&gt;.schedule</code> config value for each <code>&lt;task&gt;</code>.
1006         This config value specifies a number of seconds since the last
1007         time that task ran, according to the <code>maintenance.&lt;task&gt;.lastRun</code>
1008         config value. The tasks that are tested are those provided by
1009         the <code>--task=&lt;task&gt;</code> option(s) or those with
1010         <code>maintenance.&lt;task&gt;.enabled</code> set to true.
1011 </p>
1012 </dd>
1013 <dt class="hdlist1">
1014 --quiet
1015 </dt>
1016 <dd>
1017 <p>
1018         Do not report progress or other information over <code>stderr</code>.
1019 </p>
1020 </dd>
1021 <dt class="hdlist1">
1022 --task=&lt;task&gt;
1023 </dt>
1024 <dd>
1025 <p>
1026         If this option is specified one or more times, then only run the
1027         specified tasks in the specified order. If no <code>--task=&lt;task&gt;</code>
1028         arguments are specified, then only the tasks with
1029         <code>maintenance.&lt;task&gt;.enabled</code> configured as <code>true</code> are considered.
1030         See the <em>TASKS</em> section for the list of accepted <code>&lt;task&gt;</code> values.
1031 </p>
1032 </dd>
1033 <dt class="hdlist1">
1034 --scheduler=auto|crontab|systemd-timer|launchctl|schtasks
1035 </dt>
1036 <dd>
1037 <p>
1038         When combined with the <code>start</code> subcommand, specify the scheduler
1039         for running the hourly, daily and weekly executions of
1040         <code>git maintenance run</code>.
1041         Possible values for <code>&lt;scheduler&gt;</code> are <code>auto</code>, <code>crontab</code>
1042         (POSIX), <code>systemd-timer</code> (Linux), <code>launchctl</code> (macOS), and
1043         <code>schtasks</code> (Windows). When <code>auto</code> is specified, the
1044         appropriate platform-specific scheduler is used; on Linux,
1045         <code>systemd-timer</code> is used if available, otherwise
1046         <code>crontab</code>. Default is <code>auto</code>.
1047 </p>
1048 </dd>
1049 </dl></div>
1050 </div>
1051 </div>
1052 <div class="sect1">
1053 <h2 id="_troubleshooting">TROUBLESHOOTING</h2>
1054 <div class="sectionbody">
1055 <div class="paragraph"><p>The <code>git maintenance</code> command is designed to simplify the repository
1056 maintenance patterns while minimizing user wait time during Git commands.
1057 A variety of configuration options are available to allow customizing this
1058 process. The default maintenance options focus on operations that complete
1059 quickly, even on large repositories.</p></div>
1060 <div class="paragraph"><p>Users may find some cases where scheduled maintenance tasks do not run as
1061 frequently as intended. Each <code>git maintenance run</code> command takes a lock on
1062 the repository&#8217;s object database, and this prevents other concurrent
1063 <code>git maintenance run</code> commands from running on the same repository. Without
1064 this safeguard, competing processes could leave the repository in an
1065 unpredictable state.</p></div>
1066 <div class="paragraph"><p>The background maintenance schedule runs <code>git maintenance run</code> processes
1067 on an hourly basis. Each run executes the "hourly" tasks. At midnight,
1068 that process also executes the "daily" tasks. At midnight on the first day
1069 of the week, that process also executes the "weekly" tasks. A single
1070 process iterates over each registered repository, performing the scheduled
1071 tasks for that frequency. Depending on the number of registered
1072 repositories and their sizes, this process may take longer than an hour.
1073 In this case, multiple <code>git maintenance run</code> commands may run on the same
1074 repository at the same time, colliding on the object database lock. This
1075 results in one of the two tasks not running.</p></div>
1076 <div class="paragraph"><p>If you find that some maintenance windows are taking longer than one hour
1077 to complete, then consider reducing the complexity of your maintenance
1078 tasks. For example, the <code>gc</code> task is much slower than the
1079 <code>incremental-repack</code> task. However, this comes at a cost of a slightly
1080 larger object database. Consider moving more expensive tasks to be run
1081 less frequently.</p></div>
1082 <div class="paragraph"><p>Expert users may consider scheduling their own maintenance tasks using a
1083 different schedule than is available through <code>git maintenance start</code> and
1084 Git configuration options. These users should be aware of the object
1085 database lock and how concurrent <code>git maintenance run</code> commands behave.
1086 Further, the <code>git gc</code> command should not be combined with
1087 <code>git maintenance run</code> commands. <code>git gc</code> modifies the object database
1088 but does not take the lock in the same way as <code>git maintenance run</code>. If
1089 possible, use <code>git maintenance run --task=gc</code> instead of <code>git gc</code>.</p></div>
1090 <div class="paragraph"><p>The following sections describe the mechanisms put in place to run
1091 background maintenance by <code>git maintenance start</code> and how to customize
1092 them.</p></div>
1093 </div>
1094 </div>
1095 <div class="sect1">
1096 <h2 id="_background_maintenance_on_posix_systems">BACKGROUND MAINTENANCE ON POSIX SYSTEMS</h2>
1097 <div class="sectionbody">
1098 <div class="paragraph"><p>The standard mechanism for scheduling background tasks on POSIX systems
1099 is cron(8). This tool executes commands based on a given schedule. The
1100 current list of user-scheduled tasks can be found by running <code>crontab -l</code>.
1101 The schedule written by <code>git maintenance start</code> is similar to this:</p></div>
1102 <div class="listingblock">
1103 <div class="content">
1104 <pre><code># BEGIN GIT MAINTENANCE SCHEDULE
1105 # The following schedule was created by Git
1106 # Any edits made in this region might be
1107 # replaced in the future by a Git command.
1108
1109 0 1-23 * * * "/&lt;path&gt;/git" --exec-path="/&lt;path&gt;" for-each-repo --config=maintenance.repo maintenance run --schedule=hourly
1110 0 0 * * 1-6 "/&lt;path&gt;/git" --exec-path="/&lt;path&gt;" for-each-repo --config=maintenance.repo maintenance run --schedule=daily
1111 0 0 * * 0 "/&lt;path&gt;/git" --exec-path="/&lt;path&gt;" for-each-repo --config=maintenance.repo maintenance run --schedule=weekly
1112
1113 # END GIT MAINTENANCE SCHEDULE</code></pre>
1114 </div></div>
1115 <div class="paragraph"><p>The comments are used as a region to mark the schedule as written by Git.
1116 Any modifications within this region will be completely deleted by
1117 <code>git maintenance stop</code> or overwritten by <code>git maintenance start</code>.</p></div>
1118 <div class="paragraph"><p>The <code>crontab</code> entry specifies the full path of the <code>git</code> executable to
1119 ensure that the executed <code>git</code> command is the same one with which
1120 <code>git maintenance start</code> was issued independent of <code>PATH</code>. If the same user
1121 runs <code>git maintenance start</code> with multiple Git executables, then only the
1122 latest executable is used.</p></div>
1123 <div class="paragraph"><p>These commands use <code>git for-each-repo --config=maintenance.repo</code> to run
1124 <code>git maintenance run --schedule=&lt;frequency&gt;</code> on each repository listed in
1125 the multi-valued <code>maintenance.repo</code> config option. These are typically
1126 loaded from the user-specific global config. The <code>git maintenance</code> process
1127 then determines which maintenance tasks are configured to run on each
1128 repository with each <code>&lt;frequency&gt;</code> using the <code>maintenance.&lt;task&gt;.schedule</code>
1129 config options. These values are loaded from the global or repository
1130 config values.</p></div>
1131 <div class="paragraph"><p>If the config values are insufficient to achieve your desired background
1132 maintenance schedule, then you can create your own schedule. If you run
1133 <code>crontab -e</code>, then an editor will load with your user-specific <code>cron</code>
1134 schedule. In that editor, you can add your own schedule lines. You could
1135 start by adapting the default schedule listed earlier, or you could read
1136 the crontab(5) documentation for advanced scheduling techniques. Please
1137 do use the full path and <code>--exec-path</code> techniques from the default
1138 schedule to ensure you are executing the correct binaries in your
1139 schedule.</p></div>
1140 </div>
1141 </div>
1142 <div class="sect1">
1143 <h2 id="_background_maintenance_on_linux_systemd_systems">BACKGROUND MAINTENANCE ON LINUX SYSTEMD SYSTEMS</h2>
1144 <div class="sectionbody">
1145 <div class="paragraph"><p>While Linux supports <code>cron</code>, depending on the distribution, <code>cron</code> may
1146 be an optional package not necessarily installed. On modern Linux
1147 distributions, systemd timers are superseding it.</p></div>
1148 <div class="paragraph"><p>If user systemd timers are available, they will be used as a replacement
1149 of <code>cron</code>.</p></div>
1150 <div class="paragraph"><p>In this case, <code>git maintenance start</code> will create user systemd timer units
1151 and start the timers. The current list of user-scheduled tasks can be found
1152 by running <code>systemctl --user list-timers</code>. The timers written by <code>git
1153 maintenance start</code> are similar to this:</p></div>
1154 <div class="listingblock">
1155 <div class="content">
1156 <pre><code>$ systemctl --user list-timers
1157 NEXT                         LEFT          LAST                         PASSED     UNIT                         ACTIVATES
1158 Thu 2021-04-29 19:00:00 CEST 42min left    Thu 2021-04-29 18:00:11 CEST 17min ago  git-maintenance@hourly.timer git-maintenance@hourly.service
1159 Fri 2021-04-30 00:00:00 CEST 5h 42min left Thu 2021-04-29 00:00:11 CEST 18h ago    git-maintenance@daily.timer  git-maintenance@daily.service
1160 Mon 2021-05-03 00:00:00 CEST 3 days left   Mon 2021-04-26 00:00:11 CEST 3 days ago git-maintenance@weekly.timer git-maintenance@weekly.service</code></pre>
1161 </div></div>
1162 <div class="paragraph"><p>One timer is registered for each <code>--schedule=&lt;frequency&gt;</code> option.</p></div>
1163 <div class="paragraph"><p>The definition of the systemd units can be inspected in the following files:</p></div>
1164 <div class="listingblock">
1165 <div class="content">
1166 <pre><code>~/.config/systemd/user/git-maintenance@.timer
1167 ~/.config/systemd/user/git-maintenance@.service
1168 ~/.config/systemd/user/timers.target.wants/git-maintenance@hourly.timer
1169 ~/.config/systemd/user/timers.target.wants/git-maintenance@daily.timer
1170 ~/.config/systemd/user/timers.target.wants/git-maintenance@weekly.timer</code></pre>
1171 </div></div>
1172 <div class="paragraph"><p><code>git maintenance start</code> will overwrite these files and start the timer
1173 again with <code>systemctl --user</code>, so any customization should be done by
1174 creating a drop-in file, i.e. a <code>.conf</code> suffixed file in the
1175 <code>~/.config/systemd/user/git-maintenance@.service.d</code> directory.</p></div>
1176 <div class="paragraph"><p><code>git maintenance stop</code> will stop the user systemd timers and delete
1177 the above mentioned files.</p></div>
1178 <div class="paragraph"><p>For more details, see <code>systemd.timer(5)</code>.</p></div>
1179 </div>
1180 </div>
1181 <div class="sect1">
1182 <h2 id="_background_maintenance_on_macos_systems">BACKGROUND MAINTENANCE ON MACOS SYSTEMS</h2>
1183 <div class="sectionbody">
1184 <div class="paragraph"><p>While macOS technically supports <code>cron</code>, using <code>crontab -e</code> requires
1185 elevated privileges and the executed process does not have a full user
1186 context. Without a full user context, Git and its credential helpers
1187 cannot access stored credentials, so some maintenance tasks are not
1188 functional.</p></div>
1189 <div class="paragraph"><p>Instead, <code>git maintenance start</code> interacts with the <code>launchctl</code> tool,
1190 which is the recommended way to schedule timed jobs in macOS. Scheduling
1191 maintenance through <code>git maintenance (start|stop)</code> requires some
1192 <code>launchctl</code> features available only in macOS 10.11 or later.</p></div>
1193 <div class="paragraph"><p>Your user-specific scheduled tasks are stored as XML-formatted <code>.plist</code>
1194 files in <code>~/Library/LaunchAgents/</code>. You can see the currently-registered
1195 tasks using the following command:</p></div>
1196 <div class="listingblock">
1197 <div class="content">
1198 <pre><code>$ ls ~/Library/LaunchAgents/org.git-scm.git*
1199 org.git-scm.git.daily.plist
1200 org.git-scm.git.hourly.plist
1201 org.git-scm.git.weekly.plist</code></pre>
1202 </div></div>
1203 <div class="paragraph"><p>One task is registered for each <code>--schedule=&lt;frequency&gt;</code> option. To
1204 inspect how the XML format describes each schedule, open one of these
1205 <code>.plist</code> files in an editor and inspect the <code>&lt;array&gt;</code> element following
1206 the <code>&lt;key&gt;StartCalendarInterval&lt;/key&gt;</code> element.</p></div>
1207 <div class="paragraph"><p><code>git maintenance start</code> will overwrite these files and register the
1208 tasks again with <code>launchctl</code>, so any customizations should be done by
1209 creating your own <code>.plist</code> files with distinct names. Similarly, the
1210 <code>git maintenance stop</code> command will unregister the tasks with <code>launchctl</code>
1211 and delete the <code>.plist</code> files.</p></div>
1212 <div class="paragraph"><p>To create more advanced customizations to your background tasks, see
1213 launchctl.plist(5) for more information.</p></div>
1214 </div>
1215 </div>
1216 <div class="sect1">
1217 <h2 id="_background_maintenance_on_windows_systems">BACKGROUND MAINTENANCE ON WINDOWS SYSTEMS</h2>
1218 <div class="sectionbody">
1219 <div class="paragraph"><p>Windows does not support <code>cron</code> and instead has its own system for
1220 scheduling background tasks. The <code>git maintenance start</code> command uses
1221 the <code>schtasks</code> command to submit tasks to this system. You can inspect
1222 all background tasks using the Task Scheduler application. The tasks
1223 added by Git have names of the form <code>Git Maintenance (&lt;frequency&gt;)</code>.
1224 The Task Scheduler GUI has ways to inspect these tasks, but you can also
1225 export the tasks to XML files and view the details there.</p></div>
1226 <div class="paragraph"><p>Note that since Git is a console application, these background tasks
1227 create a console window visible to the current user. This can be changed
1228 manually by selecting the "Run whether user is logged in or not" option
1229 in Task Scheduler. This change requires a password input, which is why
1230 <code>git maintenance start</code> does not select it by default.</p></div>
1231 <div class="paragraph"><p>If you want to customize the background tasks, please rename the tasks
1232 so future calls to <code>git maintenance (start|stop)</code> do not overwrite your
1233 custom tasks.</p></div>
1234 </div>
1235 </div>
1236 <div class="sect1">
1237 <h2 id="_configuration">CONFIGURATION</h2>
1238 <div class="sectionbody">
1239 <div class="paragraph"><p>Everything below this line in this section is selectively included
1240 from the <a href="git-config.html">git-config(1)</a> documentation. The content is the same
1241 as what&#8217;s found there:</p></div>
1242 <div class="dlist"><dl>
1243 <dt class="hdlist1">
1244 maintenance.auto
1245 </dt>
1246 <dd>
1247 <p>
1248         This boolean config option controls whether some commands run
1249         <code>git maintenance run --auto</code> after doing their normal work. Defaults
1250         to true.
1251 </p>
1252 </dd>
1253 <dt class="hdlist1">
1254 maintenance.strategy
1255 </dt>
1256 <dd>
1257 <p>
1258         This string config option provides a way to specify one of a few
1259         recommended schedules for background maintenance. This only affects
1260         which tasks are run during <code>git maintenance run --schedule=X</code>
1261         commands, provided no <code>--task=&lt;task&gt;</code> arguments are provided.
1262         Further, if a <code>maintenance.&lt;task&gt;.schedule</code> config value is set,
1263         then that value is used instead of the one provided by
1264         <code>maintenance.strategy</code>. The possible strategy strings are:
1265 </p>
1266 <div class="ulist"><ul>
1267 <li>
1268 <p>
1269 <code>none</code>: This default setting implies no task are run at any schedule.
1270 </p>
1271 </li>
1272 <li>
1273 <p>
1274 <code>incremental</code>: This setting optimizes for performing small maintenance
1275   activities that do not delete any data. This does not schedule the <code>gc</code>
1276   task, but runs the <code>prefetch</code> and <code>commit-graph</code> tasks hourly, the
1277   <code>loose-objects</code> and <code>incremental-repack</code> tasks daily, and the <code>pack-refs</code>
1278   task weekly.
1279 </p>
1280 </li>
1281 </ul></div>
1282 </dd>
1283 <dt class="hdlist1">
1284 maintenance.&lt;task&gt;.enabled
1285 </dt>
1286 <dd>
1287 <p>
1288         This boolean config option controls whether the maintenance task
1289         with name <code>&lt;task&gt;</code> is run when no <code>--task</code> option is specified to
1290         <code>git maintenance run</code>. These config values are ignored if a
1291         <code>--task</code> option exists. By default, only <code>maintenance.gc.enabled</code>
1292         is true.
1293 </p>
1294 </dd>
1295 <dt class="hdlist1">
1296 maintenance.&lt;task&gt;.schedule
1297 </dt>
1298 <dd>
1299 <p>
1300         This config option controls whether or not the given <code>&lt;task&gt;</code> runs
1301         during a <code>git maintenance run --schedule=&lt;frequency&gt;</code> command. The
1302         value must be one of "hourly", "daily", or "weekly".
1303 </p>
1304 </dd>
1305 <dt class="hdlist1">
1306 maintenance.commit-graph.auto
1307 </dt>
1308 <dd>
1309 <p>
1310         This integer config option controls how often the <code>commit-graph</code> task
1311         should be run as part of <code>git maintenance run --auto</code>. If zero, then
1312         the <code>commit-graph</code> task will not run with the <code>--auto</code> option. A
1313         negative value will force the task to run every time. Otherwise, a
1314         positive value implies the command should run when the number of
1315         reachable commits that are not in the commit-graph file is at least
1316         the value of <code>maintenance.commit-graph.auto</code>. The default value is
1317         100.
1318 </p>
1319 </dd>
1320 <dt class="hdlist1">
1321 maintenance.loose-objects.auto
1322 </dt>
1323 <dd>
1324 <p>
1325         This integer config option controls how often the <code>loose-objects</code> task
1326         should be run as part of <code>git maintenance run --auto</code>. If zero, then
1327         the <code>loose-objects</code> task will not run with the <code>--auto</code> option. A
1328         negative value will force the task to run every time. Otherwise, a
1329         positive value implies the command should run when the number of
1330         loose objects is at least the value of <code>maintenance.loose-objects.auto</code>.
1331         The default value is 100.
1332 </p>
1333 </dd>
1334 <dt class="hdlist1">
1335 maintenance.incremental-repack.auto
1336 </dt>
1337 <dd>
1338 <p>
1339         This integer config option controls how often the <code>incremental-repack</code>
1340         task should be run as part of <code>git maintenance run --auto</code>. If zero,
1341         then the <code>incremental-repack</code> task will not run with the <code>--auto</code>
1342         option. A negative value will force the task to run every time.
1343         Otherwise, a positive value implies the command should run when the
1344         number of pack-files not in the multi-pack-index is at least the value
1345         of <code>maintenance.incremental-repack.auto</code>. The default value is 10.
1346 </p>
1347 </dd>
1348 </dl></div>
1349 </div>
1350 </div>
1351 <div class="sect1">
1352 <h2 id="_git">GIT</h2>
1353 <div class="sectionbody">
1354 <div class="paragraph"><p>Part of the <a href="git.html">git(1)</a> suite</p></div>
1355 </div>
1356 </div>
1357 </div>
1358 <div id="footnotes"><hr /></div>
1359 <div id="footer">
1360 <div id="footer-text">
1361 Last updated
1362  2022-11-22 19:59:10 PST
1363 </div>
1364 </div>
1365 </body>
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