diff options
| author |  Eric Wong <e@80x24.org> | 2021-10-29 00:15:52 +0000 |
|---|---|---|
| committer |  Junio C Hamano <gitster@pobox.com> | 2021-10-29 10:22:40 -0700 |
| commit | 412e4caee387d825903bf1252aefbd5cf995a599 (patch) | |
| tree | 3a2104c1ac2fd9c9630d2ab02ea1dfc7ea8cadc8 /perl/Git | |
| parent | Git 2.33.1 (diff) | |
| download | tgif-412e4caee387d825903bf1252aefbd5cf995a599.tar.xz | |
tests: disable fsync everywhere
The "GIT_TEST_FSYNC" environment variable now exists for
disabling fsync() even on packfiles and other "critical" data.
Running "make test -j8 NO_SVN_TESTS=1" on a noisy 8-core system
on an HDD, test runtime drops from ~4 minutes down to ~3 minutes.
Using "GIT_TEST_FSYNC=1" re-enables fsync() for comparison
purposes.
SVN interopability tests are minimally affected since SVN will
still use fsync in various places.
This will also be useful for 3rd-party tools which create
throwaway git repositories of temporary data, but remains
undocumented for end users.
Signed-off-by: Eric Wong <e@80x24.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'perl/Git')
| -rw-r--r-- | perl/Git/SVN.pm | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/perl/Git/SVN.pm b/perl/Git/SVN.pm index 35ff5a6896..6ce2e283c8 100644 --- a/perl/Git/SVN.pm +++ b/perl/Git/SVN.pm @@ -6,7 +6,7 @@ use constant rev_map_fmt => 'NH*'; use vars qw/$_no_metadata $_repack $_repack_flags $_use_svm_props $_head $_use_svnsync_props $no_reuse_existing - $_use_log_author $_add_author_from $_localtime/; + $_use_log_author $_add_author_from $_localtime $_use_fsync/; use Carp qw/croak/; use File::Path qw/mkpath/; use IPC::Open3; @@ -2269,6 +2269,19 @@ sub mkfile { } } +# TODO: move this to Git.pm? +sub use_fsync { + if (!defined($_use_fsync)) { + my $x = $ENV{GIT_TEST_FSYNC}; + if (defined $x) { + my $v = command_oneline('-c', "test.fsync=$x", + qw(config --type=bool test.fsync)); + $_use_fsync = defined($v) ? ($v eq "true\n") : 1; + } + } + $_use_fsync; +} + sub rev_map_set { my ($self, $rev, $commit, $update_ref, $uuid) = @_; defined $commit or die "missing arg3\n"; @@ -2290,7 +2303,7 @@ sub rev_map_set { my $sync; # both of these options make our .rev_db file very, very important # and we can't afford to lose it because rebuild() won't work - if ($self->use_svm_props || $self->no_metadata) { + if (($self->use_svm_props || $self->no_metadata) && use_fsync()) { require File::Copy; $sync = 1; File::Copy::copy($db, $db_lock) or die "rev_map_set(@_): ", |