opensourcemirror
/
git
mirror of https://github.com/git/git.git
1
0
Fork 0
Code Issues Releases Wiki Activity

pack-bitmap-write.c: instrument number of reused bitmaps 

When debugging bitmap generation performance, it is useful to know how
many bitmaps were generated from scratch, and how many were the result
of permuting the bit-order of an existing bitmap.

Keep track of the latter, and emit the count as a trace2_data line to
aid in debugging.

Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Taylor Blau 2022-10-12 18:01:57 -04:00 committed by Junio C Hamano
parent 2dcff52524
commit e9c3839944
1 changed files with 7 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
pack-bitmap-write.c
View File

@ -384,6 +384,8 @@ static int fill_bitmap_tree(struct bitmap *bitmap,
return 0;
}
static int reused_bitmaps_nr;
static int fill_bitmap_commit(struct bb_commit *ent,
struct commit *commit,
struct prio_queue *queue,
@ -409,8 +411,10 @@ static int fill_bitmap_commit(struct bb_commit *ent,
* bitmap and add its bits to this one. No need to walk
* parents or the tree for this commit.
*/
if (old && !rebuild_bitmap(mapping, old, ent->bitmap))
if (old && !rebuild_bitmap(mapping, old, ent->bitmap)) {
reused_bitmaps_nr++;
continue;
}
}
/*
@ -526,6 +530,8 @@ int bitmap_writer_build(struct packing_data *to_pack)
trace2_region_leave("pack-bitmap-write", "building_bitmaps_total",
the_repository);
trace2_data_intmax("pack-bitmap-write", the_repository,
"building_bitmaps_reused", reused_bitmaps_nr);
stop_progress(&writer.progress);