performance considerations with IO schedulers and DM multipathing

["Paul Cote" <paul.cote@xxxxxxxxxxxxx>]

Hi,

 

Is there any advantage to one specific IO scheduler (below) that may improve IO performance / throughput when running with a round-robin failover policy? Has anyone done testing with this ... and willing to share results?

 

thanks,

Paul

 

Completely Fair Queuing—elevator=cfq (default)

Deadline—elevator=deadline

NOOP—elevator=noop

Anticipatory—elevator=as

 

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