[dm-devel] performance considerations with IO schedulers and DM multipathing

["Paul Cote" <paul cote incipient com>]

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