With this option, `git gc` checks if there are too many
loose objects in the repository and runs
gitlink:git-repack[1] with `-d -l` option to pack them.
- The threshold is set with `gc.auto` configuration
+ The threshold for loose objects is set with `gc.auto` configuration
variable, and can be disabled by setting it to 0. Some
Porcelain commands use this after they perform operation
that could create many loose objects automatically.
+ Additionally, when there are too many packs are present,
+ they are consolidated into one larger pack by running
+ the `git-repack` command with `-A` option. The
+ threshold for number of packs is set with
+ `gc.autopacklimit` configuration variable.
Configuration
-------------
static int pack_refs = 1;
static int aggressive_window = -1;
static int gc_auto_threshold = 6700;
+static int gc_auto_pack_limit = 20;
#define MAX_ADD 10
static const char *argv_pack_refs[] = {"pack-refs", "--all", "--prune", NULL};
gc_auto_threshold = git_config_int(var, value);
return 0;
}
+ if (!strcmp(var, "gc.autopacklimit")) {
+ gc_auto_pack_limit = git_config_int(var, value);
+ return 0;
+ }
return git_default_config(var, value);
}
int num_loose = 0;
int needed = 0;
+ if (gc_auto_threshold <= 0)
+ return 0;
+
if (sizeof(path) <= snprintf(path, sizeof(path), "%s/17", objdir)) {
warning("insanely long object directory %.*s", 50, objdir);
return 0;
return needed;
}
+static int too_many_packs(void)
+{
+ struct packed_git *p;
+ int cnt;
+
+ if (gc_auto_pack_limit <= 0)
+ return 0;
+
+ prepare_packed_git();
+ for (cnt = 0, p = packed_git; p; p = p->next) {
+ char path[PATH_MAX];
+ size_t len;
+ int keep;
+
+ if (!p->pack_local)
+ continue;
+ len = strlen(p->pack_name);
+ if (PATH_MAX <= len + 1)
+ continue; /* oops, give up */
+ memcpy(path, p->pack_name, len-5);
+ memcpy(path + len - 5, ".keep", 6);
+ keep = access(p->pack_name, F_OK) && (errno == ENOENT);
+ if (keep)
+ continue;
+ /*
+ * Perhaps check the size of the pack and count only
+ * very small ones here?
+ */
+ cnt++;
+ }
+ return gc_auto_pack_limit <= cnt;
+}
+
static int need_to_gc(void)
{
int ac = 0;
/*
- * Setting gc.auto to 0 or negative can disable the
- * automatic gc
+ * Setting gc.auto and gc.autopacklimit to 0 or negative can
+ * disable the automatic gc.
*/
- if (gc_auto_threshold <= 0)
- return 0;
-
- if (!too_many_loose_objects())
+ if (gc_auto_threshold <= 0 && gc_auto_pack_limit <= 0)
return 0;
+ /*
+ * If there are too many loose objects, but not too many
+ * packs, we run "repack -d -l". If there are too many packs,
+ * we run "repack -A -d -l". Otherwise we tell the caller
+ * there is no need.
+ */
argv_repack[ac++] = "repack";
+ if (too_many_packs())
+ argv_repack[ac++] = "-A";
+ else if (!too_many_loose_objects())
+ return 0;
argv_repack[ac++] = "-d";
argv_repack[ac++] = "-l";
argv_repack[ac++] = NULL;