13 494
правки
Изменения
Нет описания правки
TODO: This section lacks random read performance comparisons.
Bluestore is the «new» storage layer of Ceph. All presentations and documents say it’s better in all ways, which in fact indeed seems reasonable for something «new».
Bluestore is really 2x faster than Filestore for linear write workloads, because it has no double-writes — big blocks are written only once, not twice as in Filestore. Filestore journals everything, so all writes first go to the journal and then get copied to the main device.
