diff options
| author | Jeff Hostetler <jeffhost@microsoft.com> | 2021-02-03 18:34:44 +0300 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2021-02-17 04:14:34 +0300 |
| commit | 8c4b7503d033d8ba20771a1af8e077a79a18ce49 (patch) | |
| tree | 84e5f338880cc5ba3cb4d816d1bb7b0333f03561 /preload-index.c | |
| parent | 4f2009dce2d270ded8bb94417becf6cc2143c70c (diff) | |
preload-index: log the number of lstat calls to trace2
Report the total number of calls made to lstat() inside preload_index().
FSMonitor improves the performance of commands like `git status` by
avoiding scanning the disk for changed files. This can be seen in
`preload_index()`. Let's measure this.
Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com>
Reviewed-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'preload-index.c')
| -rw-r--r-- | preload-index.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/preload-index.c b/preload-index.c index ed6eaa4738..e5529a5863 100644 --- a/preload-index.c +++ b/preload-index.c @@ -31,6 +31,7 @@ struct thread_data { struct pathspec pathspec; struct progress_data *progress; int offset, nr; + int t2_nr_lstat; }; static void *preload_thread(void *_data) @@ -73,6 +74,7 @@ static void *preload_thread(void *_data) continue; if (threaded_has_symlink_leading_path(&cache, ce->name, ce_namelen(ce))) continue; + p->t2_nr_lstat++; if (lstat(ce->name, &st)) continue; if (ie_match_stat(index, ce, &st, CE_MATCH_RACY_IS_DIRTY|CE_MATCH_IGNORE_FSMONITOR)) @@ -98,6 +100,7 @@ void preload_index(struct index_state *index, int threads, i, work, offset; struct thread_data data[MAX_PARALLEL]; struct progress_data pd; + int t2_sum_lstat = 0; if (!HAVE_THREADS || !core_preload_index) return; @@ -107,6 +110,9 @@ void preload_index(struct index_state *index, threads = 2; if (threads < 2) return; + + trace2_region_enter("index", "preload", NULL); + trace_performance_enter(); if (threads > MAX_PARALLEL) threads = MAX_PARALLEL; @@ -141,10 +147,14 @@ void preload_index(struct index_state *index, struct thread_data *p = data+i; if (pthread_join(p->pthread, NULL)) die("unable to join threaded lstat"); + t2_sum_lstat += p->t2_nr_lstat; } stop_progress(&pd.progress); trace_performance_leave("preload index"); + + trace2_data_intmax("index", NULL, "preload/sum_lstat", t2_sum_lstat); + trace2_region_leave("index", "preload", NULL); } int repo_read_index_preload(struct repository *repo, |