performance

README

Performance tests

Knative performance tests are tests geared towards producing useful performance metrics of the knative system. As such they can choose to take a closed-box point-of-view of the system and use it just like an end-user might see it. They can also go more open-boxy to narrow down the components under test.

Load Generator

Knative uses vegeta to generate HTTP load. It can be configured to generate load at a predefined rate. Officially it supports constant rate and sine rate, but if you want to generate load at a different rate, you can write your own pacer by implementing Pacer interface. Custom pacer implementations used in Knative tests are under pacers.

Benchmarking using Mako

The benchmarks were originally built to use mako, but currently running without connecting to the Mako backend, and collecting the data using a Mako sidecar stub.

Run without Mako

To run a benchmark once, and use the result from mako-stub for plotting:

1. Start the benchmarking job:

   ko apply -f test/performance/benchmarks/deployment-probe/continuous/benchmark-direct.yaml

2. Wait until all the pods with the selector equal to the job name are completed.

3. Retrieve results from mako-stub using the script in where pod_name is the name of the pod from the previous step.

read_results.sh "$pod_name" "$pod_namespace" ${mako_port:-10001} ${timeout:-120} ${retries:-100} ${retries_interval:-10} "$output_file"

This will download a CSV with all raw results. Alternatively you can remove the port argument -p in mako-stub container to dump the output to container log directly.

Note: Running performance-tests-mako.sh creates a cluster and runs all the benchmarks in sequence. Results are downloaded in a temp folder

Benchmarking using Kperf

Running performance-tests.sh runs performance tests using kperf

Documentation

Index

• func ProbeTargetTillReady(target string, duration time.Duration) error
• func WaitForScaleToZero(ctx context.Context, namespace string, selector labels.Selector, ...) error

Functions

func ProbeTargetTillReady

func ProbeTargetTillReady(target string, duration time.Duration) error

ProbeTargetTillReady will probe the target once per second for the given duration, until it's ready or error happens

func WaitForScaleToZero

func WaitForScaleToZero(ctx context.Context, namespace string, selector labels.Selector, duration time.Duration) error

WaitForScaleToZero will wait for the deployments in the indexer to scale to 0