Den mån 18 juni 2018 kl 14:55 skrev Marc Boisis <[email protected]>:

> Hi,
>
> I want to export rbd over nfs in a 10Gb network. Server and Client are
> DELL R620 with 10Gb nics.
>
> NFS client write bandwith on the rbd export is only 233MB/s.
>


>
> My conclusion:
>         - rbd write performance is good
>         - nfs write permormance is good
>         - nfs write on rbd performance is bad
>
>
>
If you write to a pool with 3x replication over 10GE, then it will need to
ship data 3 times over 10GE to finalize the write, so 350MB/s sounds like a
theoretical maximum in terms of a single writer.

-- 
May the most significant bit of your life be positive.
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