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author | Eric Wong <e@80x24.org> | 2019-05-30 06:35:05 +0000 |
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committer | Eric Wong <e@80x24.org> | 2019-05-30 06:40:27 +0000 |
commit | e261bedfae7f2eb192109b5fdd4113440fee7e22 (patch) | |
tree | 97d812dcbb233cbb0f2bc29911771f7d297ee698 /lib/PublicInbox | |
parent | 6a2805beea98eb52b8ed866758fd2c416e22fdfb (diff) | |
download | public-inbox-e261bedfae7f2eb192109b5fdd4113440fee7e22.tar.gz |
We don't need to use git to check ancestry if object IDs match on a string comparison. This saves 100ms or so and brings down the ~0.5s no-op time on lore.kernel.org/lkml down to ~0.4s.
Diffstat (limited to 'lib/PublicInbox')
-rw-r--r-- | lib/PublicInbox/V2Writable.pm | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/PublicInbox/V2Writable.pm b/lib/PublicInbox/V2Writable.pm index fd93ac27..76844cd4 100644 --- a/lib/PublicInbox/V2Writable.pm +++ b/lib/PublicInbox/V2Writable.pm @@ -831,6 +831,12 @@ sub log_range ($$$$$) { return $tip; # all of it }; + # fast equality check to avoid (v)fork+execve overhead + if ($cur eq $tip) { + $sync->{ranges}->[$i] = undef; + return; + } + my $range = "$cur..$tip"; $pr->("$i.git checking contiguity... ") if $pr; if (is_ancestor($git, $cur, $tip)) { # common case |