There are utilities built into Ceph to measure performance, as well as valuable external tools. We'll discuss both. It's important to remember that workloads that issue smaller requests will yield much lower numbers than those issuing larger requests.
Benchmarking
RADOS bench
To use Ceph's built-in tool, first create a dedicated, disposable pool to scribble into. For this to be a legitimate test, it must have the same attributes as your production pool: PG count, replication factor, CRUSH rules, etc.
Options to rados bench include:
- -p: The name of our dedicated test pool
- seconds: Number of seconds the test should run
- write|seq|rand: Type of workload to present: write, sequential read, random read
- -t: Number...
