daml/ledger-service/http-json-perf

Instructions

The following instructions tested on Linux but should also work on macOs.

1. Install Gatling (open-source load testing solution)

• the website: https://gatling.io/open-source
• direct URL: https://repo1.maven.org/maven2/io/gatling/highcharts/gatling-charts-highcharts-bundle/3.3.1/gatling-charts-highcharts-bundle-3.3.1-bundle.zip

2. Create quickstart DAML project

$ daml new quickstart-java quickstart-java
$ cd quickstart-java/
$ daml build

3. Start Sandbox with quickstart DAR

Ledger ID MyLedger is important, it is currently hardcoded in the com.daml.http.perf.scenario.SimulationConfig. See aliceJwt.

$ daml sandbox --ledgerid MyLedger ./.daml/dist/quickstart-0.0.1.dar

4. Start JSON API

daml json-api  --ledger-host=localhost --ledger-port=6865 --http-port=7575 --package-reload-interval 5h --allow-insecure-tokens

5. Run Gatling scenario

$ <GATLING_HOME>/bin/gatling.sh --simulations-folder=<DAML_PROJECT_HOME>/ledger-service/http-json-perf/src/main/scala/com/daml/http/perf/scenario --simulation=com.daml.http.perf.scenario.CreateCommand

Where:

• <GATLING_HOME> -- path to the Gatling directory
• <DAML_PROJECT_HOME> -- path to the DAML Repository on the local disk
• --simulation=com.daml.http.perf.scenario.CreateCommand -- full class name of the scenario from the --simulations-folder