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Diffstat (limited to 'test/benchmarks/README.md')
-rw-r--r-- | test/benchmarks/README.md | 81 |
1 files changed, 60 insertions, 21 deletions
diff --git a/test/benchmarks/README.md b/test/benchmarks/README.md index 9ff602cf1..d1bbabf6f 100644 --- a/test/benchmarks/README.md +++ b/test/benchmarks/README.md @@ -13,33 +13,51 @@ To run benchmarks you will need: * Docker installed (17.09.0 or greater). -The easiest way to run benchmarks is to use the script at -//scripts/benchmark.sh. +The easiest way to setup runsc for running benchmarks is to use the make file. +From the root directory: -If not using the script, you will need: +* Download images: `make load-all-images` +* Install runsc suitable for benchmarking, which should probably not have + strace or debug logs enabled. For example:`make configure RUNTIME=myrunsc + ARGS=--platform=kvm`. +* Restart docker: `sudo service docker restart` -* `runsc` configured with docker +You should now have a runtime with the following options configured in +`/etc/docker/daemon.json` -Note: benchmarks call the runtime by name. If docker can run it with -`--runtime=` flag, these tools should work. +``` +"myrunsc": { + "path": "/tmp/myrunsc/runsc", + "runtimeArgs": [ + "--debug-log", + "/tmp/bench/logs/runsc.log.%TEST%.%TIMESTAMP%.%COMMAND%", + "--platform=kvm" + ] + }, + +``` + +This runtime has been configured with a debugging off and strace logs off and is +using kvm for demonstration. ## Running benchmarks -The easiest way to run is with the script at //scripts/benchmarks.sh. The script -will run all benchmarks under //test/benchmarks if a target is not provided. +Given the runtime above runtime `myrunsc`, run benchmarks with the following: -```bash -./script/benchmarks.sh //path/to/target +``` +make sudo TARGETS=//path/to:target ARGS="--runtime=myrunsc -test.v \ + -test.bench=." OPTIONS="-c opt ``` -If you want to run benchmarks manually: - -* Run `make load-all-images` from `//` -* Run with: +For example, to run only the Iperf tests: -```bash -bazel test --test_arg=--runtime=RUNTIME -c opt --test_output=streamed --test_timeout=600 --test_arg=-test.bench=. --nocache_test_results //path/to/target ``` +make sudo TARGETS=//test/benchmarks/network:network_test \ + ARGS="--runtime=myrunsc -test.v -test.bench=Iperf" OPTIONS="-c opt" +``` + +Benchmarks are run with root as some benchmarks require root privileges to do +things like drop caches. ## Writing benchmarks @@ -69,6 +87,7 @@ var h harness.Harness func BenchmarkMyCoolOne(b *testing.B) { machine, err := h.GetMachine() // check err + defer machine.CleanUp() ctx := context.Background() container := machine.GetContainer(ctx, b) @@ -82,7 +101,7 @@ func BenchmarkMyCoolOne(b *testing.B) { Image: "benchmarks/my-cool-image", Env: []string{"MY_VAR=awesome"}, other options...see dockerutil - }, "sh", "-c", "echo MY_VAR" ...) + }, "sh", "-c", "echo MY_VAR") //check err b.StopTimer() @@ -107,12 +126,32 @@ Some notes on the above: flags, remote virtual machines (eventually), and other services. * Respect `b.N` in that users of the benchmark may want to "run for an hour" or something of the sort. -* Use the `b.ReportMetric` method to report custom metrics. +* Use the `b.ReportMetric()` method to report custom metrics. * Set the timer if time is useful for reporting. There isn't a way to turn off default metrics in testing.B (B/op, allocs/op, ns/op). * Take a look at dockerutil at //pkg/test/dockerutil to see all methods available from containers. The API is based on the "official" [docker API for golang](https://pkg.go.dev/mod/github.com/docker/docker). -* `harness.GetMachine` marks how many machines this tests needs. If you have a - client and server and to mark them as multiple machines, call it - `GetMachine` twice. +* `harness.GetMachine()` marks how many machines this tests needs. If you have + a client and server and to mark them as multiple machines, call + `harness.GetMachine()` twice. + +## Profiling + +For profiling, the runtime is required to have the `--profile` flag enabled. +This flag loosens seccomp filters so that the runtime can write profile data to +disk. This configuration is not recommended for production. + +* Install runsc with the `--profile` flag: `make configure RUNTIME=myrunsc + ARGS="--profile --platform=kvm --vfs2"`. The kvm and vfs2 flags are not + required, but are included for demonstration. +* Restart docker: `sudo service docker restart` + +To run and generate CPU profiles fs_test test run: + +``` +make sudo TARGETS=//test/benchmarks/fs:fs_test \ + ARGS="--runtime=myrunsc -test.v -test.bench=. --pprof-cpu" OPTIONS="-c opt" +``` + +Profiles would be at: `/tmp/profile/myrunsc/CONTAINERNAME/cpu.pprof` |