Write amplification for CephFS?

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Dear all,

is there information available anywhere about the write amplification for
CephFS? I found quite some material on write amplification of VMs using
journaled file system on top of RBD but nothing as it relates to CephFS?

>From my understanding I would expect the following:

- for X-rep, data needs to be written to X pgs (factor X)
- for k-m EC, data is written to k+m pgs (factor (k+m)/k)

Am I correct? How much is added by meta data, WAL? Do I miss anything?

Best wishes,
Manuel
_______________________________________________
ceph-users mailing list -- ceph-users@xxxxxxx
To unsubscribe send an email to ceph-users-leave@xxxxxxx



[Index of Archives]     [Information on CEPH]     [Linux Filesystem Development]     [Ceph Development]     [Ceph Large]     [Ceph Dev]     [Linux USB Development]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [xfs]


  Powered by Linux