| /* |
| * |
| * Copyright 2015 gRPC authors. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| */ |
| |
| #include "src/core/lib/iomgr/time_averaged_stats.h" |
| |
| #include <math.h> |
| |
| #include <grpc/support/log.h> |
| #include "test/core/util/test_config.h" |
| |
| #define EXPECT_EQ(a, b) GPR_ASSERT((a) == (b)) |
| #define EXPECT_DOUBLE_EQ(a, b) GPR_ASSERT(fabs((a) - (b)) < 1e-9) |
| |
| static void no_regress_no_persist_test_1(void) { |
| grpc_time_averaged_stats tas; |
| grpc_time_averaged_stats_init(&tas, 1000, 0, 0.0); |
| EXPECT_DOUBLE_EQ(1000, tas.aggregate_weighted_avg); |
| EXPECT_DOUBLE_EQ(0, tas.aggregate_total_weight); |
| |
| /* Should have no effect */ |
| grpc_time_averaged_stats_update_average(&tas); |
| EXPECT_DOUBLE_EQ(1000, tas.aggregate_weighted_avg); |
| EXPECT_DOUBLE_EQ(0, tas.aggregate_total_weight); |
| |
| /* Should replace old average */ |
| grpc_time_averaged_stats_add_sample(&tas, 2000); |
| grpc_time_averaged_stats_update_average(&tas); |
| EXPECT_DOUBLE_EQ(2000, tas.aggregate_weighted_avg); |
| EXPECT_DOUBLE_EQ(1, tas.aggregate_total_weight); |
| } |
| |
| static void no_regress_no_persist_test_2(void) { |
| grpc_time_averaged_stats tas; |
| grpc_time_averaged_stats_init(&tas, 1000, 0, 0.0); |
| EXPECT_DOUBLE_EQ(1000, tas.aggregate_weighted_avg); |
| /* Should replace init value */ |
| grpc_time_averaged_stats_add_sample(&tas, 2000); |
| grpc_time_averaged_stats_update_average(&tas); |
| EXPECT_DOUBLE_EQ(2000, tas.aggregate_weighted_avg); |
| EXPECT_DOUBLE_EQ(1, tas.aggregate_total_weight); |
| |
| grpc_time_averaged_stats_add_sample(&tas, 3000); |
| grpc_time_averaged_stats_update_average(&tas); |
| EXPECT_DOUBLE_EQ(3000, tas.aggregate_weighted_avg); |
| EXPECT_DOUBLE_EQ(1, tas.aggregate_total_weight); |
| } |
| |
| static void no_regress_no_persist_test_3(void) { |
| grpc_time_averaged_stats tas; |
| grpc_time_averaged_stats_init(&tas, 1000, 0, 0.0); |
| EXPECT_DOUBLE_EQ(1000, tas.aggregate_weighted_avg); |
| /* Should replace init value */ |
| grpc_time_averaged_stats_add_sample(&tas, 2500); |
| grpc_time_averaged_stats_update_average(&tas); |
| EXPECT_DOUBLE_EQ(2500, tas.aggregate_weighted_avg); |
| EXPECT_DOUBLE_EQ(1, tas.aggregate_total_weight); |
| |
| grpc_time_averaged_stats_add_sample(&tas, 3500); |
| grpc_time_averaged_stats_add_sample(&tas, 4500); |
| grpc_time_averaged_stats_update_average(&tas); |
| EXPECT_DOUBLE_EQ(4000, tas.aggregate_weighted_avg); |
| EXPECT_DOUBLE_EQ(2, tas.aggregate_total_weight); |
| } |
| |
| static void some_regress_no_persist_test(void) { |
| grpc_time_averaged_stats tas; |
| grpc_time_averaged_stats_init(&tas, 1000, 0.5, 0.0); |
| EXPECT_DOUBLE_EQ(1000, tas.aggregate_weighted_avg); |
| EXPECT_DOUBLE_EQ(0, tas.aggregate_total_weight); |
| grpc_time_averaged_stats_add_sample(&tas, 2000); |
| grpc_time_averaged_stats_add_sample(&tas, 2000); |
| grpc_time_averaged_stats_update_average(&tas); |
| /* (2 * 2000 + 0.5 * 1000) / 2.5 */ |
| EXPECT_DOUBLE_EQ(1800, tas.aggregate_weighted_avg); |
| EXPECT_DOUBLE_EQ(2.5, tas.aggregate_total_weight); |
| } |
| |
| static void some_decay_test(void) { |
| grpc_time_averaged_stats tas; |
| grpc_time_averaged_stats_init(&tas, 1000, 1, 0.0); |
| EXPECT_EQ(1000, tas.aggregate_weighted_avg); |
| /* Should avg with init value */ |
| grpc_time_averaged_stats_add_sample(&tas, 2000); |
| grpc_time_averaged_stats_update_average(&tas); |
| EXPECT_DOUBLE_EQ(1500, tas.aggregate_weighted_avg); |
| EXPECT_DOUBLE_EQ(2, tas.aggregate_total_weight); |
| |
| grpc_time_averaged_stats_add_sample(&tas, 2000); |
| grpc_time_averaged_stats_update_average(&tas); |
| EXPECT_DOUBLE_EQ(1500, tas.aggregate_weighted_avg); |
| EXPECT_DOUBLE_EQ(2, tas.aggregate_total_weight); |
| |
| grpc_time_averaged_stats_add_sample(&tas, 2000); |
| grpc_time_averaged_stats_update_average(&tas); |
| EXPECT_DOUBLE_EQ(1500, tas.aggregate_weighted_avg); |
| EXPECT_DOUBLE_EQ(2, tas.aggregate_total_weight); |
| } |
| |
| static void no_regress_full_persist_test(void) { |
| grpc_time_averaged_stats tas; |
| grpc_time_averaged_stats_init(&tas, 1000, 0, 1.0); |
| EXPECT_DOUBLE_EQ(1000, tas.aggregate_weighted_avg); |
| EXPECT_DOUBLE_EQ(0, tas.aggregate_total_weight); |
| |
| /* Should replace init value */ |
| grpc_time_averaged_stats_add_sample(&tas, 2000); |
| grpc_time_averaged_stats_update_average(&tas); |
| EXPECT_EQ(2000, tas.aggregate_weighted_avg); |
| EXPECT_EQ(1, tas.aggregate_total_weight); |
| |
| /* Will result in average of the 3 samples. */ |
| grpc_time_averaged_stats_add_sample(&tas, 2300); |
| grpc_time_averaged_stats_add_sample(&tas, 2300); |
| grpc_time_averaged_stats_update_average(&tas); |
| EXPECT_DOUBLE_EQ(2200, tas.aggregate_weighted_avg); |
| EXPECT_DOUBLE_EQ(3, tas.aggregate_total_weight); |
| } |
| |
| static void no_regress_some_persist_test(void) { |
| grpc_time_averaged_stats tas; |
| grpc_time_averaged_stats_init(&tas, 1000, 0, 0.5); |
| /* Should replace init value */ |
| grpc_time_averaged_stats_add_sample(&tas, 2000); |
| grpc_time_averaged_stats_update_average(&tas); |
| EXPECT_DOUBLE_EQ(2000, tas.aggregate_weighted_avg); |
| EXPECT_DOUBLE_EQ(1, tas.aggregate_total_weight); |
| |
| grpc_time_averaged_stats_add_sample(&tas, 2500); |
| grpc_time_averaged_stats_add_sample(&tas, 4000); |
| grpc_time_averaged_stats_update_average(&tas); |
| EXPECT_DOUBLE_EQ(3000, tas.aggregate_weighted_avg); |
| EXPECT_DOUBLE_EQ(2.5, tas.aggregate_total_weight); |
| } |
| |
| static void some_regress_some_persist_test(void) { |
| grpc_time_averaged_stats tas; |
| grpc_time_averaged_stats_init(&tas, 1000, 0.4, 0.6); |
| /* Sample weight = 0 */ |
| EXPECT_EQ(1000, tas.aggregate_weighted_avg); |
| EXPECT_EQ(0, tas.aggregate_total_weight); |
| |
| grpc_time_averaged_stats_update_average(&tas); |
| /* (0.6 * 0 * 1000 + 0.4 * 1000 / 0.4) */ |
| EXPECT_DOUBLE_EQ(1000, tas.aggregate_weighted_avg); |
| EXPECT_DOUBLE_EQ(0.4, tas.aggregate_total_weight); |
| |
| grpc_time_averaged_stats_add_sample(&tas, 2640); |
| grpc_time_averaged_stats_update_average(&tas); |
| /* (1 * 2640 + 0.6 * 0.4 * 1000 + 0.4 * 1000 / (1 + 0.6 * 0.4 + 0.4) */ |
| EXPECT_DOUBLE_EQ(2000, tas.aggregate_weighted_avg); |
| EXPECT_DOUBLE_EQ(1.64, tas.aggregate_total_weight); |
| |
| grpc_time_averaged_stats_add_sample(&tas, 2876.8); |
| grpc_time_averaged_stats_update_average(&tas); |
| /* (1 * 2876.8 + 0.6 * 1.64 * 2000 + 0.4 * 1000 / (1 + 0.6 * 1.64 + 0.4) */ |
| EXPECT_DOUBLE_EQ(2200, tas.aggregate_weighted_avg); |
| EXPECT_DOUBLE_EQ(2.384, tas.aggregate_total_weight); |
| |
| grpc_time_averaged_stats_add_sample(&tas, 4944.32); |
| grpc_time_averaged_stats_update_average(&tas); |
| /* (1 * 4944.32 + 0.6 * 2.384 * 2200 + 0.4 * 1000) / |
| (1 + 0.6 * 2.384 + 0.4) */ |
| EXPECT_DOUBLE_EQ(3000, tas.aggregate_weighted_avg); |
| EXPECT_DOUBLE_EQ(2.8304, tas.aggregate_total_weight); |
| } |
| |
| int main(int argc, char** argv) { |
| grpc::testing::TestEnvironment env(argc, argv); |
| no_regress_no_persist_test_1(); |
| no_regress_no_persist_test_2(); |
| no_regress_no_persist_test_3(); |
| some_regress_no_persist_test(); |
| some_decay_test(); |
| no_regress_full_persist_test(); |
| no_regress_some_persist_test(); |
| some_regress_some_persist_test(); |
| return 0; |
| } |