Renamed Benchmark_Driver’s `iterations` argument to `independent-samples` to clarify its true meaning and disambiguate it from the concept of `num-iters` used in Benchmark_O. The short form of the argument — `-i` — remains unchanged.
Small fix following the last refactorig of MAX_RSS, the `--memory` option is required to measure memory in `--verbose` mode. Added integration test for `check` command of Benchmark_Driver that depended on it.
Small fix following the last refactorig of MAX_RSS, the `--memory` option is required to measure memory in `--verbose` mode. Added integration test for `check` command of Benchmark_Driver that depended on it.
Clean up after removing bogus agregate statistics from last line of the log. It makes more sense to report the total number of executed benchmarks as a sentence that trying to fit into the format of preceding table.
Added test assertion that `run_benchmarks` return csv formatted log, as it is used to write the log into file in `log_results`.
`BenchmarkDoctor` analyzes performance tests and reports their conformance to the set of desired criteria. First two rules verify the naming convention.
`BenchmarkDoctor` is invoked from `Benchmark_Driver` with `check` aurgument.
Replaced guts of the `run_benchmarks` function with implementation from `BenchmarDriver`. There was only single client which called it with `verbose=True`, so this parameter could be safely removed.
Function `instrument_test` is replaced by running the `Benchmark_0` with `--memory` option, which implements the MAX_RSS measurement while also excluding the overhead from the benchmarking infrastructure. The incorrect computation of standard deviation was simply dropped for measurements of more than one independent sample. Bogus aggregated `Totals` statistics were removed, now reporting only the total number of executed benchmarks.
The `run` method on `BenchmarkDriver` invokes the test harness with specified number of iterations, samples. It supports mesuring memory use and in the verbose mode it also collects individual samples and monitors the system load by counting the number of voluntary and involuntary context switches.
Output is parsed using `LogParser` from `compare_perf_tests.py`. This makes that file a required dependency for the driver, therefore it is also copied to the bin directory during the build.
See https://www.martinfowler.com/bliki/StranglerApplication.html for more info on the used pattern for refactoring legacy applications.
Introduced class `BenchmarkDriver` as a beginning of strangler application that will gradually replace old functions. Used it instead of `get_tests()` function in Benchmark_Driver.
The interaction with Benchmark_O is simulated through mocking. `SubprocessMock` class records the invocations of command line processes and responds with canned replies in the format of Benchmark_O output.
Removed 3 redundant lit tests that are now covered by the unit test `test_gets_list_of_all_benchmarks_when_benchmarks_args_exist`. This saves 3 seconds from test execution. Keeping only single integration test that verifies that the plumbing is connected correstly.
The imports are a bit sketchy because it doesn’t have `.py` extension and they had to be hacked manually. :-/
Extracted `parse_args` from `main` and added test coverage for argument parsing.
