From 0d1ed5963da5d7410ad86eeaa64b3710e4aaa0c0 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Nguy=E1=BB=85n=20Th=C3=A1i=20Ng=E1=BB=8Dc=20Duy?= Date: Sat, 18 Aug 2018 16:41:23 +0200 Subject: unpack-trees: add performance tracing MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit We're going to optimize unpack_trees() a bit in the following patches. Let's add some tracing to measure how long it takes before and after. This is the baseline ("git checkout -" on webkit.git, 275k files on worktree) performance: 0.056651714 s: read cache .git/index performance: 0.183101080 s: preload index performance: 0.008584433 s: refresh index performance: 0.633767589 s: traverse_trees performance: 0.340265448 s: check_updates performance: 0.381884638 s: cache_tree_update performance: 1.401562947 s: unpack_trees performance: 0.338687914 s: write index, changed mask = 2e performance: 0.411927922 s: traverse_trees performance: 0.000023335 s: check_updates performance: 0.423697246 s: unpack_trees performance: 0.423708360 s: diff-index performance: 2.559524127 s: git command: git checkout - Signed-off-by: Nguyễn Thái Ngọc Duy Signed-off-by: Junio C Hamano --- cache-tree.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'cache-tree.c') diff --git a/cache-tree.c b/cache-tree.c index 181d5919f0..caafbff2ff 100644 --- a/cache-tree.c +++ b/cache-tree.c @@ -433,7 +433,9 @@ int cache_tree_update(struct index_state *istate, int flags) if (i) return i; + trace_performance_enter(); i = update_one(it, cache, entries, "", 0, &skip, flags); + trace_performance_leave("cache_tree_update"); if (i < 0) return i; istate->cache_changed |= CACHE_TREE_CHANGED; -- cgit v1.2.1