Table of Contents


The reference to these commands is from Sébastien Han Blog Post “Ceph: validate that the RBD cache is active” and the rbd man Page. For more posts about Ceph, take a look at Sébastien Han Blog.

Requisite - RBD image for running the Benchmarks

To be able to run a rbd benchmark, you need to create an image. The command to create an image for this would be:

$ RBD_IMAGE_NAME="bench1"
$ rbd create --size=10G $RBD_IMAGE_NAME

rbd bench


Takes normal rbd command flags like:

The following flags are for the benchmark configuration:


Write Benchmark

For sequential write benchmark:

$ rbd -p replicapool bench $RBD_IMAGE_NAME --io-type write --io-size 8192 --io-threads 256 --io-total 10G --io-pattern seq

Read Benchmark

For sequential read benchmark:

$ rbd -p replicapool bench $RBD_IMAGE_NAME --io-type read --io-size 8192 --io-threads 256 --io-total 10G --io-pattern seq


Have Fun!