Add progress output to sections of code between "Annotating[...]" and
"Computing[...]generation numbers". This can collectively take 5-10
seconds on a large enough repository.
On a test repository with I have with ~7 million commits and ~50
million objects we'll now emit:
$ ~/g/git/git --exec-path=$HOME/g/git commit-graph write
Finding commits for commit graph among packed objects: 100%
(124763727/124763727), done.
Loading known commits in commit graph: 100% (18989461/18989461), done.
Expanding reachable commits in commit graph: 100% (18989507/18989461), done.
Clearing commit marks in commit graph: 100% (18989507/18989507), done.
Counting distinct commits in commit graph: 100% (18989507/18989507), done.
Finding extra edges in commit graph: 100% (18989507/18989507), done.
Computing commit graph generation numbers: 100% (7250302/7250302), done.
Writing out commit graph in 4 passes: 100% (29001208/29001208), done.
Whereas on a medium-sized repository such as linux.git these new
progress bars won't have time to kick in and as before and we'll still
emit output like:
$ ~/g/git/git --exec-path=$HOME/g/git commit-graph write
Finding commits for commit graph among packed objects: 100%
(6529159/6529159), done.
Expanding reachable commits in commit graph: 815990, done.
Computing commit graph generation numbers: 100% (815983/815983), done.
Writing out commit graph in 4 passes: 100% (3263932/3263932), done.
The "Counting distinct commits in commit graph" phase will spend most
of its time paused at "0/*" as we QSORT(...) the list. That's not
optimal, but at least we don't seem to be stalling anymore most of the
time.
Signed-off-by: Ævar Arnfjörð Bjarmason <ava...@gmail.com>
---
commit-graph.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/commit-graph.c b/commit-graph.c
index 7138bbd02f..60ec7c1b22 100644
--- a/commit-graph.c
+++ b/commit-graph.c
@@ -893,12 +893,19 @@ void write_commit_graph(const char *obj_dir,
close_reachable(&oids, report_progress);
+ if (report_progress)
+ progress = start_delayed_progress(
+ _("Counting distinct commits in commit graph"),
+ oids.nr);
+ display_progress(progress, 0); /* TODO: Measure QSORT() progress */
QSORT(oids.list, oids.nr, commit_compare);
count_distinct = 1;
for (i = 1; i < oids.nr; i++) {
+ display_progress(progress, i + 1);
if (!oideq(&oids.list[i - 1], &oids.list[i]))
count_distinct++;
}
+ stop_progress(&progress);
if (count_distinct >= GRAPH_PARENT_MISSING)
die(_("the commit graph format cannot write %d commits"),
count_distinct);
@@ -908,8 +915,13 @@ void write_commit_graph(const char *obj_dir,
ALLOC_ARRAY(commits.list, commits.alloc);
num_large_edges = 0;
+ if (report_progress)
+ progress = start_delayed_progress(
+ _("Finding extra edges in commit graph"),
+ oids.nr);
for (i = 0; i < oids.nr; i++) {
int num_parents = 0;
+ display_progress(progress, i + 1);
if (i > 0 && oideq(&oids.list[i - 1], &oids.list[i]))
continue;
@@ -926,6 +938,7 @@ void write_commit_graph(const char *obj_dir,
commits.nr++;
}
num_chunks = num_large_edges ? 4 : 3;
+ stop_progress(&progress);
if (commits.nr >= GRAPH_PARENT_MISSING)
die(_("too many commits to write graph"));
--
2.20.1.153.gd81d796ee0
