If you need to improve performance, moving the journal and RocksDB to an
NVMe device can double IOPS and reduce latency.
On Thu., Mar. 16, 2023, 7:16 p.m. Murilo Morais,
wrote:
> Good evening everyone!
>
> Guys, what to expect latency for RBD images in a cluster with only HDD (36
> HDDs)?
>
> So
Murilo，
The latency of HDD is about 10ms+. and the IO stack in Ceph may spends
~3ms+,
so the test result is still in doubt. I guess the rbd test used the ram
cache.
You can paste more fio outputs here.
On 2023/3/17 07:16, Murilo Morais wrote:
Good evening everyone!
Guys, what to expect
