Perf supports using CockroachDB as a backend.

There is a single installation of CockroachDB for all the instances of Perf.

There should be a cockroachdb/ script in this directory. Run that script and you will be dropped into an SQL shell as root to send commands to the server. You can, for example, create a new database here:

    CREATE DATABASE androidx;

See also:

You can get to the admin interface for each by running the associated cockroachdb/ script, which will set up a port-forward to the admin interface and launch chrome to load the interface.


Follow the instructions on how to set up an instance of CockroachDB on a single kubernetes cluster.

But after downloading the statefulset yaml:

curl -O

The file should be renamed to reflect the Perf instance that will use it, and the names and app labels in the file should be rename to also reflect the Perf instance, for example:


The service name and user account are then used in the connection string in the config file, for example:

  "data_store_config": {
  "datastore_type": "cockroachdb",
  "connection_string": "postgresql://root@perf-cockroachdb-public:26257/androidx?sslmode=disable",

See also configs


Migrations can be applied from the desktop by using perf-tool.

perf-tool database migrate --config_filename=my-config.json

You might need to forward the CockroachDB connection:

kubectl port-forward perf-cockroachdb-0 26257

And then override the connection string, for example:

perf-tool database migrate --config_filename=my-config.json \


Migrating between cockroachdb instances can be done by using the ‘dump’ and ‘sql’ commands:

$ cockroach dump --url postgresql://root@perf-flutter-flutter-cockroachdb-public:26257?sslmode=disable flutter  > flutter_flutter.sql

$ cockroach sql --url postgresql://root@localhost:26257/?sslmode=disable --database flutter_flutter < flutter_flutter.sql

Note that you might want to run this from one of the cockroachdb instances in the cluster since they have local SSD and the bandwidth is much higher than to your workstation.