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| author | Eric Wong <e@80x24.org> | 2019-01-01 13:03:08 +0000 |
|---|---|---|
| committer | June McEnroe <june@causal.agency> | 2022-02-13 11:55:52 -0500 |
| commit | a8e11db6570261d2a3d7d9396b796b72998b7ec5 (patch) | |
| tree | f8f37dcb98ef6f5eb6976223c06c9b59aeed329f /cache.c | |
| parent | Remove redundant title on repo anchors (diff) | |
| download | cgit-pink-a8e11db6570261d2a3d7d9396b796b72998b7ec5.tar.gz cgit-pink-a8e11db6570261d2a3d7d9396b796b72998b7ec5.zip | |
Use buffered stdio
Our generation of HTML triggers many small write(2) syscalls which is inefficient. Time output on a horrible query against my git.git mirror shows significant performance improvement: QUERY_STRING='id=2b93bfac0f5bcabbf60f174f4e7bfa9e318e64d5&id2=d6da71a9d16b8cf27f9d8f90692d3625c849cbc8' PATH_INFO=/mirrors/git.git/diff export QUERY_STRING PATH_INFO time ./cgit >/dev/null Before: real 0m1.585s user 0m0.904s sys 0m0.658s After: real 0m0.750s user 0m0.666s sys 0m0.076s
Diffstat (limited to 'cache.c')
| -rw-r--r-- | cache.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/cache.c b/cache.c index 2c70be7..580c0e8 100644 --- a/cache.c +++ b/cache.c @@ -265,6 +265,13 @@ static int process_slot(struct cache_slot *slot) { int err; + /* + * Make sure any buffered data is flushed before we redirect, + * do sendfile(2) or write(2) + */ + if (fflush(stdout)) + return errno; + err = open_slot(slot); if (!err && slot->match) { if (is_expired(slot)) { |