Baseline network performance

In this recipe, we will perform tests to discover the baseline performance of the network between the Ceph OSD nodes. For this, we will be using the iperf utility. Make sure that the iperf package is installed on the Ceph nodes. iperf is a simple, point-to-point network bandwidth tester that works on the client-server model.

To start network benchmarking, execute iperf with the server option on the first Ceph node and with the client option on the second Ceph node.

How to do it...

Using iperf, let's get a baseline for our clusters' network performance:

1. Install iperf on the ceph-node1 and ceph-node2:

        # sudo yum install iperf -y

2. On ceph-node1, execute iperf with -s for the server, and -p to listen on a specific port:

        # iperf -s -p 6900

Note

You can skip the -p option if the TPC port 5201 is open, or you can choose any other port that is open and not in use.

3. On ceph-node2, execute iperf with the client option, -c:

        # iperf -c ceph-node1 -p 6900

Note

You...