src/client/pps.go
func (c APIClient) GarbageCollect(memoryBytes int64) error {
	_, err := c.PpsAPIClient.GarbageCollect(
		c.Ctx(),
		&pps.GarbageCollectRequest{MemoryBytes: memoryBytes},
	)
	return grpcutil.ScrubGRPC(err)
}
func (c APIClient) GarbageCollect(memoryBytes int64) error {
	_, err := c.PpsAPIClient.GarbageCollect(
		c.Ctx(),
		&pps.GarbageCollectRequest{MemoryBytes: memoryBytes},
	)
	return grpcutil.ScrubGRPC(err)
}
// GarbageCollect garbage collects unused data.  Currently GC needs to be run
// while no data is being added or removed (which, among other things, implies
// that there shouldn't be jobs actively running).  Pfs Garbage collection uses
// bloom filters to keep track of live objects because it can store more
// objects than can be indexed in memory. This means that there is a chance for
// unreferenced objects to not be GCed, this chance increases as the number of
// objects in the system increases. You can tradeoff using more memory to get a
// lower chance of collisions, the default value is 10 MB and collisions should
// be unlikely until you have 10 million objects.