amend! survey: summarize total sizes by object type

survey: summarize total sizes by object type

Now that we have explored objects by count, we can expand that a bit more to
summarize the data for the on-disk and inflated size of those objects. This
information is helpful for diagnosing both why disk space (and perhaps
clone or fetch times) is growing but also why certain operations are slow
because the inflated size of the abstract objects that must be processed is
so large.

Note: zlib-ng is slightly more efficient even at those small sizes,
therefore we need to accommodate for differences between zlib/zlib-ng in
the test.

Signed-off-by: Derrick Stolee <[email protected]>
Signed-off-by: Johannes Schindelin <[email protected]>

Author: dscho

t/t8100-git-survey.sh

@@ -30,6 +30,10 @@ test_expect_success 'git survey --progress' '
 	grep "Preparing object walk" err
 '
 
+test_lazy_prereq ZLIB_NG '
+	git version --build-options | grep zlib-ng
+'
+
 test_expect_success 'git survey (default)' '
 	git survey --all-refs >out 2>err &&
 	test_line_count = 0 err &&
@@ -54,6 +58,15 @@ test_expect_success 'git survey (default)' '
 	tags_size_on_disk sha256:      569
 	EOF
 
+	if test_have_prereq ZLIB_NG
+	then
+		test_oid_cache <<-EOF
+		commits_size_on_disk sha256:     1810
+		tags_size_on_disk sha1:      508
+		tags_size_on_disk sha256:      565
+		EOF
+	fi &&
+
 	tr , " " >expect <<-EOF &&
 	GIT SURVEY for "$(pwd)"
 	-----------------------------------------------------