From e841a79a131d8ce491cf04d0ca3e24f139a10b82 Mon Sep 17 00:00:00 2001 From: Derrick Stolee Date: Fri, 25 Sep 2020 12:33:38 +0000 Subject: [PATCH] maintenance: add incremental-repack auto condition The incremental-repack task updates the multi-pack-index by deleting pack- files that have been replaced with new packs, then repacking a batch of small pack-files into a larger pack-file. This incremental repack is faster than rewriting all object data, but is slower than some other maintenance activities. The 'maintenance.incremental-repack.auto' config option specifies how many pack-files should exist outside of the multi-pack-index before running the step. These pack-files could be created by 'git fetch' commands or by the loose-objects task. The default value is 10. Setting the option to zero disables the task with the '--auto' option, and a negative value makes the task run every time. Signed-off-by: Derrick Stolee Signed-off-by: Junio C Hamano --- Documentation/config/maintenance.txt | 9 ++++++++ builtin/gc.c | 31 ++++++++++++++++++++++++++++ t/t7900-maintenance.sh | 28 +++++++++++++++++++++++++ 3 files changed, 68 insertions(+) diff --git a/Documentation/config/maintenance.txt b/Documentation/config/maintenance.txt index c31613be62..a0706d8f09 100644 --- a/Documentation/config/maintenance.txt +++ b/Documentation/config/maintenance.txt @@ -23,3 +23,12 @@ maintenance.loose-objects.auto:: positive value implies the command should run when the number of loose objects is at least the value of `maintenance.loose-objects.auto`. The default value is 100. + +maintenance.incremental-repack.auto:: + This integer config option controls how often the `incremental-repack` + task should be run as part of `git maintenance run --auto`. If zero, + then the `incremental-repack` task will not run with the `--auto` + option. A negative value will force the task to run every time. + Otherwise, a positive value implies the command should run when the + number of pack-files not in the multi-pack-index is at least the value + of `maintenance.incremental-repack.auto`. The default value is 10. diff --git a/builtin/gc.c b/builtin/gc.c index 8d22361fa9..2b99596ec8 100644 --- a/builtin/gc.c +++ b/builtin/gc.c @@ -30,6 +30,7 @@ #include "promisor-remote.h" #include "refs.h" #include "remote.h" +#include "object-store.h" #define FAILED_RUN "failed to run %s" @@ -1001,6 +1002,35 @@ static int maintenance_task_loose_objects(struct maintenance_run_opts *opts) return prune_packed(opts) || pack_loose(opts); } +static int incremental_repack_auto_condition(void) +{ + struct packed_git *p; + int enabled; + int incremental_repack_auto_limit = 10; + int count = 0; + + if (git_config_get_bool("core.multiPackIndex", &enabled) || + !enabled) + return 0; + + git_config_get_int("maintenance.incremental-repack.auto", + &incremental_repack_auto_limit); + + if (!incremental_repack_auto_limit) + return 0; + if (incremental_repack_auto_limit < 0) + return 1; + + for (p = get_packed_git(the_repository); + count < incremental_repack_auto_limit && p; + p = p->next) { + if (!p->multi_pack_index) + count++; + } + + return count >= incremental_repack_auto_limit; +} + static int multi_pack_index_write(struct maintenance_run_opts *opts) { struct child_process child = CHILD_PROCESS_INIT; @@ -1156,6 +1186,7 @@ static struct maintenance_task tasks[] = { [TASK_INCREMENTAL_REPACK] = { "incremental-repack", maintenance_task_incremental_repack, + incremental_repack_auto_condition, }, [TASK_GC] = { "gc", diff --git a/t/t7900-maintenance.sh b/t/t7900-maintenance.sh index 9e6ea23f35..55116c2f04 100755 --- a/t/t7900-maintenance.sh +++ b/t/t7900-maintenance.sh @@ -219,4 +219,32 @@ test_expect_success EXPENSIVE 'incremental-repack 2g limit' ' --no-progress --batch-size=2147483647 /dev/null && + test_subcommand ! git multi-pack-index write --no-progress /dev/null && + test_subcommand ! git multi-pack-index write --no-progress /dev/null && + test_subcommand git multi-pack-index write --no-progress