git/t/perf/lib-pack.sh
Jeff King 0a11e40275 t/perf/lib-pack: use fast-import checkpoint to create packs
We currently use fast-import only to create a large number
of objects, and then run O(n) invocations of pack-objects to
turn them into packs.

We can do this faster by just asking fast-import to
checkpoint and create a pack for each (after telling it
not to turn loose tiny packs).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-11-21 11:07:28 +09:00

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# Helpers for dealing with large numbers of packs.
# create $1 nonsense packs, each with a single blob
create_packs () {
perl -le '
my ($n) = @ARGV;
for (1..$n) {
print "blob";
print "data <<EOF";
print "$_";
print "EOF";
print "checkpoint"
}
' "$@" |
git fast-import
}
# create a large number of packs, disabling any gc which might
# cause us to repack them
setup_many_packs () {
git config gc.auto 0 &&
git config gc.autopacklimit 0 &&
git config fastimport.unpacklimit 0 &&
create_packs 500
}