RADOS load-gen

A bit similar to the rados bench, RADOS load-gen is another interesting tool provided by Ceph, which runs out-of-the-box. As the name suggests, the RADOS load-gen tool can be used to generate load on a Ceph cluster and can be useful to simulate high load scenarios.

How to do it...

1. Let's try to generate some load on our Ceph cluster with the following command:

        # rados -p rbd load-gen --num-objects 50 --min-object-size 4M 
        --max-object-size 4M --max-ops 16 --min-op-len 4M --max-op-len 4M 
        --percent 5 --target-throughput 2000 --run-length 60

How it works...

The syntax for RADOS load-gen is as follows:

# rados -p <pool-name> load-gen

Following is the detailed explanation of preceding command:

• --num-objects: The total number of objects
• --min-object-size: The minimum object size in bytes
• --max-object-size: The maximum object size in bytes
• --min-ops: The minimum number of operations
• --max-ops: The maximum number of operations
• --min-op-len: The minimum operation length...