Re: 4x lower IOPS: Linux MD vs indiv. devices - why?

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Are the CPU load numbers reported by FIO reliable?


Yes, they're quite solid, just keep in mind that cpu is being reported on a
thread basis.


Ahhh =)

That explains that

http://picpaste.com/pics/Bildschirmfoto_vom_2017-01-23_21-15-59-MEHOP3ZW.1485202585.png

Which is engine=psync on MD

and

http://picpaste.com/pics/Bildschirmfoto_vom_2017-01-23_21-19-56-9ieRvRZy.1485202817.png

which is engine=libaio on MD

--

Ha. And I thought for a second the machine is now going into "full magic mode" ;)

Thanks,
Tobias

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