# Benchmarking Redis Software

```json metadata
{
  "title": "Benchmarking Redis Software",
  "description": "Use the `memtier_benchmark` tool to perform a performance benchmark of Redis Software.",
  "categories": ["docs","operate","rs"],
  "tableOfContents": {"sections":[{"id":"populate-a-database-with-testing-data","title":"Populate a database with testing data"}]}

,
  "codeExamples": []
}
```
Use the `memtier_benchmark` tool to perform a performance benchmark of Redis Software.

Prerequisites:

- Redis Software installed
- A cluster configured
- A database created

For help with the prerequisites, see the [Redis Software quickstart](https://redis.io/docs/latest/operate/rs/installing-upgrading/quickstarts/redis-enterprise-software-quickstart).

It is recommended to run memtier_benchmark on a separate node that is
not part of the cluster being tested. If you run it on a node of the
cluster, be mindful that it affects the performance of both the
cluster and memtier_benchmark.

```sh
/opt/redislabs/bin/memtier_benchmark -s $DB_HOST -p $DB_PORT -a $DB_PASSWORD -t 4 -R --ratio=1:1
```

This command instructs memtier_benchmark to connect to your Redis
Enterprise database and generates a load doing the following:

- A 50/50 Set to Get ratio
- Each object has random data in the value

## Populate a database with testing data

If you need to populate a database with some test data for a proof of
concept, or failover testing, etc. here is an example for you.

```sh
/opt/redislabs/bin/memtier_benchmark -s $DB_HOST -p $DB_PORT -a $DB_PASSWORD -R -n allkeys -d 500 --key-pattern=P:P --ratio=1:0
```

This command instructs memtier_benchmark to connect to your Redis
Enterprise database and generates a load doing the following:

- Write objects only, no reads
- A 500 byte object
- Each object has random data in the value
- Each key has a random pattern, then a colon, followed by a
    random pattern.

Run this command until it fills up your database to where you want it
for testing. The easiest way to check is on the database metrics page.

![images/rs/memtier_metrics_page.png](https://redis.io/docs/latest/images/rs/memtier_metrics_page.png)

Another use for memtier_benchmark is to populate a database with data
for failure testing.