| /* |
| * |
| * Copyright 2014, Google Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| */ |
| |
| #include "src/core/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() { |
| 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() { |
| 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() { |
| 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() { |
| 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() { |
| 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() { |
| 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() { |
| 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() { |
| 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_test_init(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; |
| } |