Is Your Ceph Client KILLING Your Performance?

This article also covers the performance impact. Large linear reads is not the best testcase for ceph but there should be some improvements possible. (sata?) and what does the network look like? Ceph is clean and ok. I've read numerous performance threads but can't really seem to get a grip on why throughput is so slow.

The underlying crush hierarchy allows ceph to place data across failure domains. If the underlying ceph osd node involves a pool that is experiencing high client load, the client load. Favoring dentry and inode cache can improve performance, especially on clusters with many small objects. Use cache tiering to boost the performance of your cluster by automatically.