def METHOD_NAME(self):
    perf_dict = {
        "user_key_comparison_count": 675903942,
        "block_cache_hit_count": 830086,
    }
    timestamp = int(time.time())
    perf_ts = {}
    for key in perf_dict:
        perf_ts[key] = {}
        start_val = perf_dict[key]
        for ix in range(5):
            perf_ts[key][timestamp + (ix * 10)] = start_val + (2 * ix * ix)
    db_perf_context = DatabasePerfContext(perf_ts, 10, True)
    timestamps = [timestamp + (ix * 10) for ix in range(1, 5, 1)]
    values = [val for val in range(2, 15, 4)]
    inner_dict = {timestamps[ix]: values[ix] for ix in range(4)}
    expected_keys_ts = {
        NO_ENTITY: {
            "user_key_comparison_count": inner_dict,
            "block_cache_hit_count": inner_dict,
        }
    }
    self.assertDictEqual(expected_keys_ts, db_perf_context.keys_ts)