> Detailed (somehow) problem description: > Disk size: 1.2 TB > Ceph version: Pacific > Block size: 4 MB > Operation: Sequential write > Replication factor: 1 > Direct disk performance: 245 MB/s > Ceph controlled disk performance: 80 MB/s you are comparing sequential io against random. You should consider that ceph writes to the drive in a 'random manner' > Sorry for asking this dummy question as I know there are numerous > parameters affecting the performance. Yes this is written about everywhere on this list. _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx