Hi,
We have a use case where we are reading 128MB objects off spinning disks.
We've benchmarked a number of different hard drive and have noticed that for a particular hard drive, we're experiencing slow reads by comparison.
This occurs when we have multiple readers (even just 2) reading objects off the OSD.
We've recreated the effect using iozone and have noticed that once the record size drops to 4k, the hard drive miss behaves.
Is there a setting on Ceph that we can change to fix the minimum read size when the ceph-osd daemon reads the object of the hard drives, to see if we can overcome the overall slow read rate.
Cheers,
Tom
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