> That is an interesting point. We are using 12 on 1 nvme journal for our > Filestore nodes (which seems to work ok). The workload for wal + db is > different so that could be a factor. However when I've looked at the IO > metrics for the nvme it seems to be only lightly loaded, so does not appear > to be the issue (at 1st sight anyway).
How are you determining “lightly loaded”. Not iostat %util I hope. > Also the particular nvme model could be a factor (in the 6 vs 12 area) - > what type are you using? I suspect that SSD OSDs would favor the 6 end of the scale; 12 doesn’t seem wholly unreasonable for HDD OSDs. In the end though, add the hassle factor and the cost of the NVMe device — when provisioned with enough capacity — and maybe just using SATA SSDs makese sease. _______________________________________________ ceph-users mailing list -- [email protected] To unsubscribe send an email to [email protected]
