5.1. Carrying Out Performance Benchmarking

When testing the performance of a storage cluster and comparing it with third-party setups:

  • Compare configurations with similar redundancy levels. For example, it is incorrect to compare the performance of a cluster with two or three replicas per data chunk with a standalone server that does not use any data redundancy, like RAID 1, 10, or 5.
  • Take into account the usage of file system interfaces. Keep in mind that mounting a storage cluster using the FUSE interface provides a convenient view into the cluster but is not optimal for performance. Therefore, perform benchmarks from inside virtual machines.
  • Keep in mind that the data replication factor affects the storage cluster performance: clusters with two replicas are slightly faster than those with three replicas.