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Diffstat (limited to 'test/benchmarks/README.md')
| -rw-r--r-- | test/benchmarks/README.md | 84 |
1 files changed, 31 insertions, 53 deletions
diff --git a/test/benchmarks/README.md b/test/benchmarks/README.md index 241c7a6e0..c745a5b1e 100644 --- a/test/benchmarks/README.md +++ b/test/benchmarks/README.md @@ -13,49 +13,26 @@ To run benchmarks you will need: * Docker installed (17.09.0 or greater). -The easiest way to setup runsc for running benchmarks is to use the make file. -From the root directory: - -* 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` - -You should now have a runtime with the following options configured in -`/etc/docker/daemon.json` - -``` -"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 -Given the runtime above runtime `myrunsc`, run benchmarks with the following: +To run, use the Makefile: -``` -make sudo TARGETS=//path/to:target ARGS="--runtime=myrunsc -test.v \ - -test.bench=." OPTIONS="-c opt" -``` - -For example, to run only the Iperf tests: +- Install runsc as a runtime: `make dev` + - The above command will place several configurations of runsc in your + /etc/docker/daemon.json file. Choose one without the debug option set. +- Run your benchmark: `make run-benchmark + RUNTIME=[RUNTIME_FROM_DAEMON.JSON/runc] + BENCHMARKS_TARGETS=//path/to/target"` +- Additionally, you can benchmark several platforms in one command: ``` -make sudo TARGETS=//test/benchmarks/network:network_test \ - ARGS="--runtime=myrunsc -test.v -test.bench=Iperf" OPTIONS="-c opt" +make benchmark-platforms BENCHMARKS_PLATFORMS=ptrace,kvm \ +BENCHMARKS_TARGET=//path/to/target" ``` +The above command will install runtimes/run benchmarks on ptrace and kvm as well +as run the benchmark on native runc. + Benchmarks are run with root as some benchmarks require root privileges to do things like drop caches. @@ -71,7 +48,8 @@ benchmarks. `//images/benchmarks/my-cool-dockerfile`. * Dockerfiles for benchmarks should: * Use explicitly versioned packages. - * Not use ENV and CMD statements...it is easy to add these in the API. + * Don't use ENV and CMD statements. It is easy to add these in the API via + `dockerutil.RunOpts`. * Note: A common pattern for getting access to a tmpfs mount is to copy files there after container start. See: //test/benchmarks/build/bazel_test.go. You can also make your own with `RunOpts.Mounts`. @@ -97,7 +75,7 @@ func BenchmarkMyCoolOne(b *testing.B) { out, err := container.Run(ctx, dockerutil.RunOpts{ Image: "benchmarks/my-cool-image", Env: []string{"MY_VAR=awesome"}, - other options...see dockerutil + // other options...see dockerutil }, "sh", "-c", "echo MY_VAR") // check err... b.StopTimer() @@ -118,11 +96,16 @@ func TestMain(m *testing.M) { Some notes on the above: -* Respect `b.N` in that users of the benchmark may want to "run for an hour" - or something of the sort. +* Respect and linearly scale by `b.N` so that users can run a number of times + (--benchtime=10x) or for a time duration (--benchtime=1m). For many + benchmarks, this is just the runtime of the container under test. Sometimes + this is a parameter to the container itself. For Example, the httpd + benchmark (and most client server benchmarks) uses b.N as a parameter to the + Client container that specifies how many requests to make to the server. * 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). +* Never turn off the timer (b.N), but set and reset it if useful for the + benchmark. 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). @@ -136,16 +119,11 @@ 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 profile, simply run the `benchmark-platforms` command from above and profiles +will be in /tmp/profile. -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" -``` +Or run with: `make run-benchmark RUNTIME=[RUNTIME_UNDER_TEST] +BENCHMARKS_TARGETS=//path/to/target` -Profiles would be at: `/tmp/profile/myrunsc/CONTAINERNAME/cpu.pprof` +Profiles will be in /tmp/profile. Note: runtimes must have the `--profile` flag +set in /etc/docker/daemon.conf and profiling will not work on runc. |