git/t/perf/lib-pack.sh

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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
}