3 * Copyright 2015-2016 gRPC authors.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
24 #include "absl/flags/flag.h"
26 #include <grpc/support/log.h>
27 #include <grpcpp/impl/codegen/config_protobuf.h>
29 #include "test/core/util/test_config.h"
30 #include "test/cpp/qps/benchmark_config.h"
31 #include "test/cpp/qps/driver.h"
32 #include "test/cpp/qps/parse_json.h"
33 #include "test/cpp/qps/report.h"
34 #include "test/cpp/qps/server.h"
35 #include "test/cpp/util/test_config.h"
36 #include "test/cpp/util/test_credentials_provider.h"
38 ABSL_FLAG(std::string, scenarios_file, "",
39 "JSON file containing an array of Scenario objects");
40 ABSL_FLAG(std::string, scenarios_json, "",
41 "JSON string containing an array of Scenario objects");
42 ABSL_FLAG(bool, quit, false, "Quit the workers");
43 ABSL_FLAG(std::string, search_param, "",
44 "The parameter, whose value is to be searched for to achieve "
45 "targeted cpu load. For now, we have 'offered_load'. Later, "
46 "'num_channels', 'num_outstanding_requests', etc. shall be "
49 double, initial_search_value, 0.0,
50 "initial parameter value to start the search with (i.e. lower bound)");
51 ABSL_FLAG(double, targeted_cpu_load, 70.0,
52 "Targeted cpu load (unit: %, range [0,100])");
53 ABSL_FLAG(double, stride, 1,
54 "Defines each stride of the search. The larger the stride is, "
55 "the coarser the result will be, but will also be faster.");
56 ABSL_FLAG(double, error_tolerance, 0.01,
57 "Defines threshold for stopping the search. When current search "
58 "range is narrower than the error_tolerance computed range, we "
61 ABSL_FLAG(std::string, qps_server_target_override, "",
62 "Override QPS server target to configure in client configs."
63 "Only applicable if there is a single benchmark server.");
65 ABSL_FLAG(std::string, json_file_out, "", "File to write the JSON output to.");
67 ABSL_FLAG(std::string, credential_type, grpc::testing::kInsecureCredentialsType,
68 "Credential type for communication with workers");
70 std::string, per_worker_credential_types, "",
71 "A map of QPS worker addresses to credential types. When creating a "
72 "channel to a QPS worker's driver port, the qps_json_driver first checks "
73 "if the 'name:port' string is in the map, and it uses the corresponding "
74 "credential type if so. If the QPS worker's 'name:port' string is not "
75 "in the map, then the driver -> worker channel will be created with "
76 "the credentials specified in --credential_type. The value of this flag "
77 "is a semicolon-separated list of map entries, where each map entry is "
78 "a comma-separated pair.");
79 ABSL_FLAG(bool, run_inproc, false, "Perform an in-process transport test");
81 int32_t, median_latency_collection_interval_millis, 0,
82 "Specifies the period between gathering latency medians in "
83 "milliseconds. The medians will be logged out on the client at the "
84 "end of the benchmark run. If 0, this periodic collection is disabled.");
89 static std::map<std::string, std::string>
90 ConstructPerWorkerCredentialTypesMap() {
91 // Parse a list of the form: "addr1,cred_type1;addr2,cred_type2;..." into
93 std::string remaining = absl::GetFlag(FLAGS_per_worker_credential_types);
94 std::map<std::string, std::string> out;
95 while (!remaining.empty()) {
96 size_t next_semicolon = remaining.find(';');
97 std::string next_entry = remaining.substr(0, next_semicolon);
98 if (next_semicolon == std::string::npos) {
101 remaining = remaining.substr(next_semicolon + 1, std::string::npos);
103 size_t comma = next_entry.find(',');
104 if (comma == std::string::npos) {
106 "Expectd --per_worker_credential_types to be a list "
107 "of the form: 'addr1,cred_type1;addr2,cred_type2;...' "
111 std::string addr = next_entry.substr(0, comma);
112 std::string cred_type = next_entry.substr(comma + 1, std::string::npos);
113 if (out.find(addr) != out.end()) {
115 "Found duplicate addr in per_worker_credential_types.");
118 out[addr] = cred_type;
123 static std::unique_ptr<ScenarioResult> RunAndReport(
124 const Scenario& scenario,
125 const std::map<std::string, std::string>& per_worker_credential_types,
127 std::cerr << "RUNNING SCENARIO: " << scenario.name() << "\n";
128 auto result = RunScenario(
129 scenario.client_config(), scenario.num_clients(),
130 scenario.server_config(), scenario.num_servers(),
131 scenario.warmup_seconds(), scenario.benchmark_seconds(),
132 !absl::GetFlag(FLAGS_run_inproc) ? scenario.spawn_local_worker_count()
134 absl::GetFlag(FLAGS_qps_server_target_override),
135 absl::GetFlag(FLAGS_credential_type), per_worker_credential_types,
136 absl::GetFlag(FLAGS_run_inproc),
137 absl::GetFlag(FLAGS_median_latency_collection_interval_millis));
139 // Amend the result with scenario config. Eventually we should adjust
140 // RunScenario contract so we don't need to touch the result here.
141 result->mutable_scenario()->CopyFrom(scenario);
143 GetReporter()->ReportQPS(*result);
144 GetReporter()->ReportQPSPerCore(*result);
145 GetReporter()->ReportLatency(*result);
146 GetReporter()->ReportTimes(*result);
147 GetReporter()->ReportCpuUsage(*result);
148 GetReporter()->ReportPollCount(*result);
149 GetReporter()->ReportQueriesPerCpuSec(*result);
151 for (int i = 0; *success && i < result->client_success_size(); i++) {
152 *success = result->client_success(i);
154 for (int i = 0; *success && i < result->server_success_size(); i++) {
155 *success = result->server_success(i);
158 if (!absl::GetFlag(FLAGS_json_file_out).empty()) {
159 std::ofstream json_outfile;
160 json_outfile.open(absl::GetFlag(FLAGS_json_file_out));
161 json_outfile << "{\"qps\": " << result->summary().qps() << "}\n";
162 json_outfile.close();
168 static double GetCpuLoad(
169 Scenario* scenario, double offered_load,
170 const std::map<std::string, std::string>& per_worker_credential_types,
172 scenario->mutable_client_config()
173 ->mutable_load_params()
175 ->set_offered_load(offered_load);
176 auto result = RunAndReport(*scenario, per_worker_credential_types, success);
177 return result->summary().server_cpu_usage();
180 static double BinarySearch(
181 Scenario* scenario, double targeted_cpu_load, double low, double high,
182 const std::map<std::string, std::string>& per_worker_credential_types,
184 while (low <= high * (1 - absl::GetFlag(FLAGS_error_tolerance))) {
185 double mid = low + (high - low) / 2;
186 double current_cpu_load =
187 GetCpuLoad(scenario, mid, per_worker_credential_types, success);
188 gpr_log(GPR_DEBUG, "Binary Search: current_offered_load %.0f", mid);
190 gpr_log(GPR_ERROR, "Client/Server Failure");
193 if (targeted_cpu_load <= current_cpu_load) {
194 high = mid - absl::GetFlag(FLAGS_stride);
196 low = mid + absl::GetFlag(FLAGS_stride);
203 static double SearchOfferedLoad(
204 double initial_offered_load, double targeted_cpu_load, Scenario* scenario,
205 const std::map<std::string, std::string>& per_worker_credential_types,
207 std::cerr << "RUNNING SCENARIO: " << scenario->name() << "\n";
208 double current_offered_load = initial_offered_load;
209 double current_cpu_load = GetCpuLoad(scenario, current_offered_load,
210 per_worker_credential_types, success);
211 if (current_cpu_load > targeted_cpu_load) {
212 gpr_log(GPR_ERROR, "Initial offered load too high");
216 while (*success && (current_cpu_load < targeted_cpu_load)) {
217 current_offered_load *= 2;
218 current_cpu_load = GetCpuLoad(scenario, current_offered_load,
219 per_worker_credential_types, success);
220 gpr_log(GPR_DEBUG, "Binary Search: current_offered_load %.0f",
221 current_offered_load);
224 double targeted_offered_load =
225 BinarySearch(scenario, targeted_cpu_load, current_offered_load / 2,
226 current_offered_load, per_worker_credential_types, success);
228 return targeted_offered_load;
231 static bool QpsDriver() {
234 bool scfile = (!absl::GetFlag(FLAGS_scenarios_file).empty());
235 bool scjson = (!absl::GetFlag(FLAGS_scenarios_json).empty());
236 if ((!scfile && !scjson && !absl::GetFlag(FLAGS_quit)) ||
237 (scfile && (scjson || absl::GetFlag(FLAGS_quit))) ||
238 (scjson && absl::GetFlag(FLAGS_quit))) {
240 "Exactly one of --scenarios_file, --scenarios_json, "
241 "or --quit must be set");
245 auto per_worker_credential_types = ConstructPerWorkerCredentialTypesMap();
247 // Read the json data from disk
248 FILE* json_file = fopen(absl::GetFlag(FLAGS_scenarios_file).c_str(), "r");
249 GPR_ASSERT(json_file != nullptr);
250 fseek(json_file, 0, SEEK_END);
251 long len = ftell(json_file);
252 char* data = new char[len];
253 fseek(json_file, 0, SEEK_SET);
254 GPR_ASSERT(len == (long)fread(data, 1, len, json_file));
256 json = std::string(data, data + len);
259 json = absl::GetFlag(FLAGS_scenarios_json).c_str();
260 } else if (absl::GetFlag(FLAGS_quit)) {
261 return RunQuit(absl::GetFlag(FLAGS_credential_type),
262 per_worker_credential_types);
265 // Parse into an array of scenarios
267 ParseJson(json.c_str(), "grpc.testing.Scenarios", &scenarios);
270 // Make sure that there is at least some valid scenario here
271 GPR_ASSERT(scenarios.scenarios_size() > 0);
273 for (int i = 0; i < scenarios.scenarios_size(); i++) {
274 if (absl::GetFlag(FLAGS_search_param).empty()) {
275 const Scenario& scenario = scenarios.scenarios(i);
276 RunAndReport(scenario, per_worker_credential_types, &success);
278 if (absl::GetFlag(FLAGS_search_param) == "offered_load") {
279 Scenario* scenario = scenarios.mutable_scenarios(i);
280 double targeted_offered_load =
281 SearchOfferedLoad(absl::GetFlag(FLAGS_initial_search_value),
282 absl::GetFlag(FLAGS_targeted_cpu_load), scenario,
283 per_worker_credential_types, &success);
284 gpr_log(GPR_INFO, "targeted_offered_load %f", targeted_offered_load);
285 GetCpuLoad(scenario, targeted_offered_load, per_worker_credential_types,
288 gpr_log(GPR_ERROR, "Unimplemented search param");
295 } // namespace testing
298 int main(int argc, char** argv) {
299 grpc::testing::TestEnvironment env(argc, argv);
300 grpc::testing::InitTest(&argc, &argv, true);
302 bool ok = grpc::testing::QpsDriver();