Slow performance

Slow performance is defined when the cluster is actively processing IO requests, but it appears to be operating at a lower performance level than what is expected. Generally, slow performance is caused by a component of your Ceph cluster reaching saturation and becoming a bottleneck. This maybe due to an increased number of client requests or a component failure that is causing Ceph to perform recovery.

Causes

Although there are many things which may cause Ceph to experience slow performance, here are some of the most likely causes.

Increased client workload

Sometimes, slow performance may not be...