[ceph-users] Low traffic Ceph cluster with consumer SSD.

Vitaliy Filippov vitalif at yourcmc.ru
Sun Nov 25 06:22:48 PST 2018


> Ceph issues fsync's all the time

...and, of course, it has journaling :) (only fsync is of course not  
sufficient)

with enterprise SSDs which have capacitors fsync just becomes a no-op and  
thus transactional write performance becomes the same as non-transactional  
(i.e. 10+ times faster for 4k random writes)

-- 
With best regards,
   Vitaliy Filippov


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