Re: Unexpected increase in the memory usage of OSDs - ceph-users

9 Oct 2019

...
    Do you have statistics on the size of the OSDMaps or
count of them
 which were being maintained by the OSDs?  No, I don't think so. How can I find
this information?  
 Hmm I don't know if we directly expose the size of maps. There are
 perfcounters which expose the range of maps being kept around but I
 don't know their names off-hand. 

FWIW I’ve been told that size of an OSDmap is roughly equivalent to `ceph pg dump |wc`,
which if true would seem to mean that they’re trivially small for most purposes.  Reality
of course may be much different and/or nuanced.