rados bench seq read with single "thread"

["Deneau, Tom" <tom.deneau@xxxxxxx>]

Say I have a single node "cluster" with 5 disks.
And using dd iflag=direct on that node, I can see disk read bandwidth at 160 MB/s

I populate a pool with 4MB objects.
And then on that same single node, I run
    $ drop-caches using /proc/sys/vm/drop_caches
    $ rados -p mypool bench nn seq -t 1

What bandwidth should I expect for the rados bench seq command here?
(I am seeing approximately 70 MB/s with -t 1)

-- Tom Deneau


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