Hi, sorry to everyone that I post my link again, but
https://yourcmc.ru/wiki/Ceph_performance
Hello Cephers,
The only recommendation I can find about db device selection is about
the capacity (4% of the data disk) on the documents. Is there any
suggestions about technical specs like throughput, IOPS and db device
per data disk?
While designing a specific infrastructure with filestore, we were
looking its specs to meet requirements of all the disks behind the
journal device. But in bluestore, data is directly written into data
device via bluefs adapter while metadata is written into db (RocksDB)
device.
I know that it depends on the workload, but is there any best practice
or recommendation about selection of db device?
IMO, using NVME disks that we used for filestore journals as db
devices is not meaningful. Because NVME disks have minimal latency and
extraordinary throughput and IOPS performance. So I am not sure that
DB device needs that kind of performance. So I want to use those NVME
disks for a full flash pool, and choose another disks for db device.
Any suggestion or recommendation would be appreciated.
Best regards,
Huseyin Cotuk
hcotuk@xxxxxxxxx
Selamlar,
Huseyin Cotuk
hcotuk@xxxxxxxxx
_______________________________________________
ceph-users mailing list
ceph-users@xxxxxxxxxxxxxx
http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
_______________________________________________
ceph-users mailing list
ceph-users@xxxxxxxxxxxxxx
http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
