Hello all,
I'm been using cephfs for a while but never really evaluated its
performance.
As I put up a new ceph cluster, I though that I should run a benchmark to
see if I'm going the right way.
By the results I got, I see that RBD performs *a lot* better in comparison
to cephfs.
The cluster is like this:
- 2 hosts with one SSD OSD each.
this hosts have 2 pools: cephfs_metadata and cephfs_cache (for cache
tiering).
- 3 hosts with 5 HDD OSDs each.
this hosts have 1 pool: cephfs_data.
all details, cluster set up and results can be seen here:
https://justpaste.it/167fr
I created the RBD pools the same way as the CEPHFS pools except for the
number of PGs in the data pool.
I wonder why that difference or if I'm doing something wrong.
Regards,
Webert Lima
DevOps Engineer at MAV Tecnologia
*Belo Horizonte - Brasil*
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