grpc-swift/Performance/QPSBenchmark

QPS Benchmark worker

An implementation of the QPS worker for benchmarking described in the
gRPC benchmarking guide

Building

To rebuild the proto files run make generate-qps-worker.

The benchmarks can be built in the usual SPM way but release mode is strongly recommended - swift build -c release

Running the benchmarks

To date the changes to gRPC to run the tests automatically have not been pushed upstream.

You can easily run the tests locally using the C++ driver program from gRPC - note this is built as a side effect of running the C++ tests which can be done in a gRPC checkout with ./tools/run_tests/run_performance_tests.py -l c++ -r cpp_protobuf_async_unary_qps_unconstrained_insecure

For an example of running a benchmarking tests proceed as follows

1. Open a terminal window and run the QPSBenchmark - swift run -c release QPSBenchmark --driver_port 10400.
   This will become the server when instructed by the driver.
2. Open another terminal window and run QPSBenchmark - swift run -c release QPSBenchmark --driver_port 10410. This will become the client when instructed by the driver.
3. Use the driver to control the test. In your checkout of gRPC configure the environment with export QPS_WORKERS="localhost:10400,localhost:10410" then run cmake/build/qps_json_driver '--scenarios_json={"scenarios": [{"name": "swift_protobuf_async_unary_qps_unconstrained_insecure", "warmup_seconds": 5, "benchmark_seconds": 30, "num_servers": 1, "server_config": {"async_server_threads": 0, "channel_args": [{"str_value": "throughput", "name": "grpc.optimization_target"}], "server_type": "ASYNC_SERVER", "security_params": null, "threads_per_cq": 0, "server_processes": 0}, "client_config": {"security_params": null, "channel_args": [{"str_value": "throughput", "name": "grpc.optimization_target"}], "async_client_threads": 0, "outstanding_rpcs_per_channel": 100, "rpc_type": "UNARY", "payload_config": {"simple_params": {"resp_size": 0, "req_size": 0}}, "client_channels": 64, "threads_per_cq": 0, "load_params": {"closed_loop": {}}, "client_type": "ASYNC_CLIENT", "histogram_params": {"max_possible": 60000000000.0, "resolution": 0.01}, "client_processes": 0}, "num_clients": 0}]}' --scenario_result_file=scenario_result.json This will run a test of asynchronous unary client and server, using all the cores on the machine.
   64 channels each with 100 outstanding requests.