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/*
*
* Copyright 2015-2016 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 <fstream>
#include <iostream>
#include <memory>
#include <set>
#include <grpcpp/impl/codegen/config_protobuf.h>
#include <gflags/gflags.h>
#include <grpc/support/log.h>
#include "test/cpp/qps/benchmark_config.h"
#include "test/cpp/qps/driver.h"
#include "test/cpp/qps/parse_json.h"
#include "test/cpp/qps/report.h"
#include "test/cpp/qps/server.h"
#include "test/cpp/util/test_config.h"
#include "test/cpp/util/test_credentials_provider.h"
DEFINE_string(scenarios_file, "",
"JSON file containing an array of Scenario objects");
DEFINE_string(scenarios_json, "",
"JSON string containing an array of Scenario objects");
DEFINE_bool(quit, false, "Quit the workers");
DEFINE_string(search_param, "",
"The parameter, whose value is to be searched for to achieve "
"targeted cpu load. For now, we have 'offered_load'. Later, "
"'num_channels', 'num_outstanding_requests', etc. shall be "
"added.");
DEFINE_double(
initial_search_value, 0.0,
"initial parameter value to start the search with (i.e. lower bound)");
DEFINE_double(targeted_cpu_load, 70.0,
"Targeted cpu load (unit: %, range [0,100])");
DEFINE_double(stride, 1,
"Defines each stride of the search. The larger the stride is, "
"the coarser the result will be, but will also be faster.");
DEFINE_double(error_tolerance, 0.01,
"Defines threshold for stopping the search. When current search "
"range is narrower than the error_tolerance computed range, we "
"stop the search.");
DEFINE_string(qps_server_target_override, "",
"Override QPS server target to configure in client configs."
"Only applicable if there is a single benchmark server.");
DEFINE_string(json_file_out, "", "File to write the JSON output to.");
DEFINE_string(credential_type, grpc::testing::kInsecureCredentialsType,
"Credential type for communication with workers");
DEFINE_string(
per_worker_credential_types, "",
"A map of QPS worker addresses to credential types. When creating a "
"channel to a QPS worker's driver port, the qps_json_driver first checks "
"if the 'name:port' string is in the map, and it uses the corresponding "
"credential type if so. If the QPS worker's 'name:port' string is not "
"in the map, then the driver -> worker channel will be created with "
"the credentials specified in --credential_type. The value of this flag "
"is a semicolon-separated list of map entries, where each map entry is "
"a comma-separated pair.");
DEFINE_bool(run_inproc, false, "Perform an in-process transport test");
DEFINE_int32(
median_latency_collection_interval_millis, 0,
"Specifies the period between gathering latency medians in "
"milliseconds. The medians will be logged out on the client at the "
"end of the benchmark run. If 0, this periodic collection is disabled.");
namespace grpc {
namespace testing {
static std::map<std::string, std::string>
ConstructPerWorkerCredentialTypesMap() {
// Parse a list of the form: "addr1,cred_type1;addr2,cred_type2;..." into
// a map.
std::string remaining = FLAGS_per_worker_credential_types;
std::map<std::string, std::string> out;
while (!remaining.empty()) {
size_t next_semicolon = remaining.find(';');
std::string next_entry = remaining.substr(0, next_semicolon);
if (next_semicolon == std::string::npos) {
remaining = "";
} else {
remaining = remaining.substr(next_semicolon + 1, std::string::npos);
}
size_t comma = next_entry.find(',');
if (comma == std::string::npos) {
gpr_log(GPR_ERROR,
"Expectd --per_worker_credential_types to be a list "
"of the form: 'addr1,cred_type1;addr2,cred_type2;...' "
"into.");
abort();
}
std::string addr = next_entry.substr(0, comma);
std::string cred_type = next_entry.substr(comma + 1, std::string::npos);
if (out.find(addr) != out.end()) {
gpr_log(GPR_ERROR,
"Found duplicate addr in per_worker_credential_types.");
abort();
}
out[addr] = cred_type;
}
return out;
}
static std::unique_ptr<ScenarioResult> RunAndReport(
const Scenario& scenario,
const std::map<std::string, std::string>& per_worker_credential_types,
bool* success) {
std::cerr << "RUNNING SCENARIO: " << scenario.name() << "\n";
auto result =
RunScenario(scenario.client_config(), scenario.num_clients(),
scenario.server_config(), scenario.num_servers(),
scenario.warmup_seconds(), scenario.benchmark_seconds(),
!FLAGS_run_inproc ? scenario.spawn_local_worker_count() : -2,
FLAGS_qps_server_target_override, FLAGS_credential_type,
per_worker_credential_types, FLAGS_run_inproc,
FLAGS_median_latency_collection_interval_millis);
// Amend the result with scenario config. Eventually we should adjust
// RunScenario contract so we don't need to touch the result here.
result->mutable_scenario()->CopyFrom(scenario);
GetReporter()->ReportQPS(*result);
GetReporter()->ReportQPSPerCore(*result);
GetReporter()->ReportLatency(*result);
GetReporter()->ReportTimes(*result);
GetReporter()->ReportCpuUsage(*result);
GetReporter()->ReportPollCount(*result);
GetReporter()->ReportQueriesPerCpuSec(*result);
for (int i = 0; *success && i < result->client_success_size(); i++) {
*success = result->client_success(i);
}
for (int i = 0; *success && i < result->server_success_size(); i++) {
*success = result->server_success(i);
}
if (FLAGS_json_file_out != "") {
std::ofstream json_outfile;
json_outfile.open(FLAGS_json_file_out);
json_outfile << "{\"qps\": " << result->summary().qps() << "}\n";
json_outfile.close();
}
return result;
}
static double GetCpuLoad(
Scenario* scenario, double offered_load,
const std::map<std::string, std::string>& per_worker_credential_types,
bool* success) {
scenario->mutable_client_config()
->mutable_load_params()
->mutable_poisson()
->set_offered_load(offered_load);
auto result = RunAndReport(*scenario, per_worker_credential_types, success);
return result->summary().server_cpu_usage();
}
static double BinarySearch(
Scenario* scenario, double targeted_cpu_load, double low, double high,
const std::map<std::string, std::string>& per_worker_credential_types,
bool* success) {
while (low <= high * (1 - FLAGS_error_tolerance)) {
double mid = low + (high - low) / 2;
double current_cpu_load =
GetCpuLoad(scenario, mid, per_worker_credential_types, success);
gpr_log(GPR_DEBUG, "Binary Search: current_offered_load %.0f", mid);
if (!*success) {
gpr_log(GPR_ERROR, "Client/Server Failure");
break;
}
if (targeted_cpu_load <= current_cpu_load) {
high = mid - FLAGS_stride;
} else {
low = mid + FLAGS_stride;
}
}
return low;
}
static double SearchOfferedLoad(
double initial_offered_load, double targeted_cpu_load, Scenario* scenario,
const std::map<std::string, std::string>& per_worker_credential_types,
bool* success) {
std::cerr << "RUNNING SCENARIO: " << scenario->name() << "\n";
double current_offered_load = initial_offered_load;
double current_cpu_load = GetCpuLoad(scenario, current_offered_load,
per_worker_credential_types, success);
if (current_cpu_load > targeted_cpu_load) {
gpr_log(GPR_ERROR, "Initial offered load too high");
return -1;
}
while (*success && (current_cpu_load < targeted_cpu_load)) {
current_offered_load *= 2;
current_cpu_load = GetCpuLoad(scenario, current_offered_load,
per_worker_credential_types, success);
gpr_log(GPR_DEBUG, "Binary Search: current_offered_load %.0f",
current_offered_load);
}
double targeted_offered_load =
BinarySearch(scenario, targeted_cpu_load, current_offered_load / 2,
current_offered_load, per_worker_credential_types, success);
return targeted_offered_load;
}
static bool QpsDriver() {
grpc::string json;
bool scfile = (FLAGS_scenarios_file != "");
bool scjson = (FLAGS_scenarios_json != "");
if ((!scfile && !scjson && !FLAGS_quit) ||
(scfile && (scjson || FLAGS_quit)) || (scjson && FLAGS_quit)) {
gpr_log(GPR_ERROR,
"Exactly one of --scenarios_file, --scenarios_json, "
"or --quit must be set");
abort();
}
auto per_worker_credential_types = ConstructPerWorkerCredentialTypesMap();
if (scfile) {
// Read the json data from disk
FILE* json_file = fopen(FLAGS_scenarios_file.c_str(), "r");
GPR_ASSERT(json_file != nullptr);
fseek(json_file, 0, SEEK_END);
long len = ftell(json_file);
char* data = new char[len];
fseek(json_file, 0, SEEK_SET);
GPR_ASSERT(len == (long)fread(data, 1, len, json_file));
fclose(json_file);
json = grpc::string(data, data + len);
delete[] data;
} else if (scjson) {
json = FLAGS_scenarios_json.c_str();
} else if (FLAGS_quit) {
return RunQuit(FLAGS_credential_type, per_worker_credential_types);
}
// Parse into an array of scenarios
Scenarios scenarios;
ParseJson(json.c_str(), "grpc.testing.Scenarios", &scenarios);
bool success = true;
// Make sure that there is at least some valid scenario here
GPR_ASSERT(scenarios.scenarios_size() > 0);
for (int i = 0; i < scenarios.scenarios_size(); i++) {
if (FLAGS_search_param == "") {
const Scenario& scenario = scenarios.scenarios(i);
RunAndReport(scenario, per_worker_credential_types, &success);
} else {
if (FLAGS_search_param == "offered_load") {
Scenario* scenario = scenarios.mutable_scenarios(i);
double targeted_offered_load = SearchOfferedLoad(
FLAGS_initial_search_value, FLAGS_targeted_cpu_load, scenario,
per_worker_credential_types, &success);
gpr_log(GPR_INFO, "targeted_offered_load %f", targeted_offered_load);
GetCpuLoad(scenario, targeted_offered_load, per_worker_credential_types,
&success);
} else {
gpr_log(GPR_ERROR, "Unimplemented search param");
}
}
}
return success;
}
} // namespace testing
} // namespace grpc
int main(int argc, char** argv) {
grpc::testing::InitTest(&argc, &argv, true);
bool ok = grpc::testing::QpsDriver();
return ok ? 0 : 1;
}
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