From c6ce27ab08d30dd9d626d7a56cb928bc5792eb27 Mon Sep 17 00:00:00 2001 From: Eric Wong Date: Sun, 12 Feb 2023 09:04:26 +0000 Subject: fetch: support hideRefs to speed up connectivity checks With roughly 800 remotes all fetching into their own refs/remotes/$REMOTE/* island, the connectivity check[1] gets expensive for each fetch on systems which lack sufficient RAM to cache objects. To do a no-op fetch on one $REMOTE out of hundreds, hideRefs now allows the no-op fetch to take ~30 seconds instead of ~20 minutes on a noisy, RAM-constrained machine (localhost, so no network latency): git -c fetch.hideRefs=refs \ -c fetch.hideRefs='!refs/remotes/$REMOTE/' \ fetch $REMOTE [1] `git rev-list --objects --stdin --not --all --quiet --alternate-refs' Signed-off-by: Eric Wong Signed-off-by: Junio C Hamano --- builtin/fetch.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'builtin/fetch.c') diff --git a/builtin/fetch.c b/builtin/fetch.c index a09606b472..edbeb19d3b 100644 --- a/builtin/fetch.c +++ b/builtin/fetch.c @@ -1132,6 +1132,7 @@ static int store_updated_refs(const char *raw_url, const char *remote_name, if (!connectivity_checked) { struct check_connected_options opt = CHECK_CONNECTED_INIT; + opt.exclude_hidden_refs_section = "fetch"; rm = ref_map; if (check_connected(iterate_ref_map, &rm, &opt)) { rc = error(_("%s did not send all necessary objects\n"), url); @@ -1325,6 +1326,7 @@ static int check_exist_and_connected(struct ref *ref_map) } opt.quiet = 1; + opt.exclude_hidden_refs_section = "fetch"; return check_connected(iterate_ref_map, &rm, &opt); } -- cgit v1.2.3