This has been discussed a lot in the performance meetings so I've added Mark to discuss. My naive recollection is that the per-terabyte recommendation will be more realistic than it was in the past (an effective increase in memory needs), but also that it will be under much better control than previously.
On Thu, Aug 10, 2017 at 1:35 AM Stijn De Weirdt <stijn.deweirdt@xxxxxxxx> wrote:
hi all,
we are planning to purchse new OSD hardware, and we are wondering if for
upcoming luminous with bluestore OSDs, anything wrt the hardware
recommendations from
http://docs.ceph.com/docs/master/start/hardware-recommendations/
will be different, esp the memory/cpu part. i understand from colleagues
that the async messenger makes a big difference in memory usage (maybe
also cpu load?); but we are also interested in the "1GB of RAM per TB"
recommendation/requirement.
many thanks,
stijn
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