Re: Mapped rbd is very slow

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rbd -p kube bench kube/bench --io-type write --io-threads 1 --io-total 10G --io-pattern rand
elapsed:    14  ops:   262144  ops/sec: 17818.16  bytes/sec: 72983201.32

It's a totally unreal number. Something is wrong with the test.

Test it with `fio` please:

fio -ioengine=rbd -name=test -bs=4k -iodepth=1 -rw=randwrite -runtime=60 -pool=kube -rbdname=bench

Reads are very very slow:
elapsed:   445  ops:    81216  ops/sec:   182.37  bytes/sec: 747006.15
elapsed:    14  ops:    14153  ops/sec:   957.57  bytes/sec: 3922192.15

This is closer to the reality.

--
With best regards,
  Vitaliy Filippov
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