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author | Alex Vandiver <alexmv@dropbox.com> | 2017-10-28 02:26:35 +0300 |
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committer | Junio C Hamano <gitster@pobox.com> | 2017-10-30 05:45:56 +0300 |
commit | c87fbcf7614a064877cd0323f0ed31840fed9c0c (patch) | |
tree | f143f6ae959afdbee0ff50685b76552af339277e /sha1dc | |
parent | 11cf33bec62512f2c3f0bdcfdaa41e31e9b0c3e8 (diff) |
fsmonitor: don't bother pretty-printing JSON from watchman
This provides modest performance savings. Benchmarking with the
following program, with and without `--no-pretty`, we find savings of
23% (0.316s -> 0.242s) in the git repository, and savings of 8% (5.24s
-> 4.86s) on a large repository with 580k files in the working copy.
#!/usr/bin/perl
use strict;
use warnings;
use IPC::Open2;
use JSON::XS;
my $pid = open2(\*CHLD_OUT, \*CHLD_IN, "watchman -j @ARGV")
or die "open2() failed: $!\n" .
"Falling back to scanning...\n";
my $query = qq|["query", "$ENV{PWD}", {}]|;
print CHLD_IN $query;
close CHLD_IN;
my $response = do {local $/; <CHLD_OUT>};
JSON::XS->new->utf8->decode($response);
Signed-off-by: Alex Vandiver <alexmv@dropbox.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'sha1dc')
0 files changed, 0 insertions, 0 deletions