[OmniOS-discuss] NVMe Performance

[Bob Friesenhahn]

On Fri, 8 Apr 2016, Phil Harman wrote:
>
> You also need to consider latency vs throughput. Most devices work better with a queue depth greater than one.

NVMe's claim to fame is its multi-threaded performance in that it is 
able to effectively read/write many blocks in parallel.  SATA and NVMe 
seem to be equivalent in performance for single-threaded sequential 
I/O.

It is often assumed that NVMe is ideal for a zfs intent log, but the 
required sequential nature of the intent log seems to not benefit from 
NVMe.

Bob
-- 
Bob Friesenhahn
bfriesen at simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/