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author | Eric Wong <e@80x24.org> | 2023-02-12 09:04:26 +0000 |
---|---|---|
committer | Junio C Hamano <gitster@pobox.com> | 2023-02-27 09:27:03 -0800 |
commit | c6ce27ab08d30dd9d626d7a56cb928bc5792eb27 (patch) | |
tree | db78da0e93422555f1e18788c91f2e5aaa64a2ff | |
parent | dadc8e6dacb629f46aee39bde90b6f09b73722eb (diff) | |
download | git-c6ce27ab08d30dd9d626d7a56cb928bc5792eb27.tar.gz |
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 <e@80x24.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
-rw-r--r-- | Documentation/git-rev-parse.txt | 9 | ||||
-rw-r--r-- | Documentation/rev-list-options.txt | 9 | ||||
-rw-r--r-- | builtin/fetch.c | 2 | ||||
-rw-r--r-- | builtin/rev-list.c | 2 | ||||
-rw-r--r-- | revision.c | 3 | ||||
-rwxr-xr-x | t/t5510-fetch.sh | 9 | ||||
-rwxr-xr-x | t/t6018-rev-list-glob.sh | 2 | ||||
-rwxr-xr-x | t/t6021-rev-list-exclude-hidden.sh | 2 |
8 files changed, 26 insertions, 12 deletions
diff --git a/Documentation/git-rev-parse.txt b/Documentation/git-rev-parse.txt index bcd8069287..f26a7591e3 100644 --- a/Documentation/git-rev-parse.txt +++ b/Documentation/git-rev-parse.txt @@ -197,10 +197,11 @@ respectively, and they must begin with `refs/` when applied to `--glob` or `--all`. If a trailing '/{asterisk}' is intended, it must be given explicitly. ---exclude-hidden=[receive|uploadpack]:: - Do not include refs that would be hidden by `git-receive-pack` or - `git-upload-pack` by consulting the appropriate `receive.hideRefs` or - `uploadpack.hideRefs` configuration along with `transfer.hideRefs` (see +--exclude-hidden=[fetch|receive|uploadpack]:: + Do not include refs that would be hidden by `git-fetch`, + `git-receive-pack` or `git-upload-pack` by consulting the appropriate + `fetch.hideRefs`, `receive.hideRefs` or `uploadpack.hideRefs` + configuration along with `transfer.hideRefs` (see linkgit:git-config[1]). This option affects the next pseudo-ref option `--all` or `--glob` and is cleared after processing them. diff --git a/Documentation/rev-list-options.txt b/Documentation/rev-list-options.txt index 0d90d5b154..90c73d6708 100644 --- a/Documentation/rev-list-options.txt +++ b/Documentation/rev-list-options.txt @@ -195,10 +195,11 @@ respectively, and they must begin with `refs/` when applied to `--glob` or `--all`. If a trailing '/{asterisk}' is intended, it must be given explicitly. ---exclude-hidden=[receive|uploadpack]:: - Do not include refs that would be hidden by `git-receive-pack` or - `git-upload-pack` by consulting the appropriate `receive.hideRefs` or - `uploadpack.hideRefs` configuration along with `transfer.hideRefs` (see +--exclude-hidden=[fetch|receive|uploadpack]:: + Do not include refs that would be hidden by `git-fetch`, + `git-receive-pack` or `git-upload-pack` by consulting the appropriate + `fetch.hideRefs`, `receive.hideRefs` or `uploadpack.hideRefs` + configuration along with `transfer.hideRefs` (see linkgit:git-config[1]). This option affects the next pseudo-ref option `--all` or `--glob` and is cleared after processing them. 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); } diff --git a/builtin/rev-list.c b/builtin/rev-list.c index d42db0b0cc..2ab3efd233 100644 --- a/builtin/rev-list.c +++ b/builtin/rev-list.c @@ -38,7 +38,7 @@ static const char rev_list_usage[] = " --tags\n" " --remotes\n" " --stdin\n" -" --exclude-hidden=[receive|uploadpack]\n" +" --exclude-hidden=[fetch|receive|uploadpack]\n" " --quiet\n" " ordering output:\n" " --topo-order\n" diff --git a/revision.c b/revision.c index 21f5f572c2..50940699e4 100644 --- a/revision.c +++ b/revision.c @@ -1574,7 +1574,8 @@ void exclude_hidden_refs(struct ref_exclusions *exclusions, const char *section) { struct exclude_hidden_refs_cb cb; - if (strcmp(section, "receive") && strcmp(section, "uploadpack")) + if (strcmp(section, "fetch") && strcmp(section, "receive") && + strcmp(section, "uploadpack")) die(_("unsupported section for hidden refs: %s"), section); if (exclusions->hidden_refs_configured) diff --git a/t/t5510-fetch.sh b/t/t5510-fetch.sh index 34a1261520..dc44da9c79 100755 --- a/t/t5510-fetch.sh +++ b/t/t5510-fetch.sh @@ -1171,6 +1171,15 @@ test_expect_success '--no-show-forced-updates' ' ) ' +for section in fetch transfer +do + test_expect_success "$section.hideRefs affects connectivity check" ' + GIT_TRACE="$PWD"/trace git -c $section.hideRefs=refs -c \ + $section.hideRefs="!refs/tags/" fetch && + grep "git rev-list .*--exclude-hidden=fetch" trace + ' +done + setup_negotiation_tip () { SERVER="$1" URL="$2" diff --git a/t/t6018-rev-list-glob.sh b/t/t6018-rev-list-glob.sh index aabf590dda..67d523d405 100755 --- a/t/t6018-rev-list-glob.sh +++ b/t/t6018-rev-list-glob.sh @@ -187,7 +187,7 @@ test_expect_success 'rev-parse --exclude=ref with --remotes=glob' ' compare rev-parse "--exclude=upstream/x --remotes=upstream/*" "upstream/one upstream/two" ' -for section in receive uploadpack +for section in fetch receive uploadpack do test_expect_success "rev-parse --exclude-hidden=$section with --all" ' compare "-c transfer.hideRefs=refs/remotes/ rev-parse" "--branches --tags" "--exclude-hidden=$section --all" diff --git a/t/t6021-rev-list-exclude-hidden.sh b/t/t6021-rev-list-exclude-hidden.sh index 11c50b7c0d..1a9d37e638 100755 --- a/t/t6021-rev-list-exclude-hidden.sh +++ b/t/t6021-rev-list-exclude-hidden.sh @@ -22,7 +22,7 @@ test_expect_success 'invalid section' ' test_cmp expected err ' -for section in receive uploadpack +for section in fetch receive uploadpack do test_expect_success "$section: passed multiple times" ' echo "fatal: --exclude-hidden= passed more than once" >expected && |