Ceph » bluestore

It appears that bluestore may be slower than filestore when creating RBD blocks (ie if pre-filling an RBD volume with 4MB writes). This is most apparent when using a HDD block partition with the WAL and DB on flash. Bluestore however, appears to be faster in a similar setup when creating new 4MB objects via rados bench and when doing 4MB writes to existing RBD blocks.

I'll see if I can run some additional tests to capture with high logging enabled.

Mark