SNIA IOPS Test
IOPS performance will typically vary greatly depending on
the nature of the IO traffic, including the mixture of Read and Write
operations, and the mixture of Block Sizes (the size of the IO operation’s data
packet, also referred to as IO Size). This test is designed to benchmark the
IOPS performance profile, at a Queue Depth of 32, for random IO operations for
56 different combinations of Read/Write mix % and Block Sizes when in a Steady
State, which are of interest to most users.
All of the SNIA’s test specifications define a ‘required’
set of parameters that must be run for the test and then allow the operator to
elect to run additional tests with different parameters of their choice. It is
the mandatory test with the required parameters that we run. Note that all of
the mandatory SNIA tests must be conducted with fully random data
As previously mentioned, a key principle of SNIA testing is
to provide a consistent basis for comparing different solutions from different
Here are the results –
SNIA IOPS Test
Here you can see a visual confirmation that Steady State
Convergence was determined at the end of Round 6 (note that steady state
convergence is calculated from the 4K line).
Here is a 3D and tabular presentation of the results. Users
can simply refer to the grid to obtain the R/W mix and Block Size value of
interest. For example, Online Transaction Processing applications
typically run at a Block Size of 8K and a Read/Write Mix of 65/35, and users
can quickly understand how the device might perform under Steady State for
these access characteristics.
You can see that the 4K 100% Read IOPS result is 75,041,
which is significantly less than Micron’s specification of 93,000. The 4K 100% Write
IOPS result is 30,620 which is significantly greater than Micron’s specification
of 24,000. The shortfall with the reads is probably explained by our testing
being conducted through an HBA rather than directly through a Motherboard’s
SNIA IOPS Test – Product Comparison
For interest we present a comparison of the 4K 100% Writes
and Reads results with those of the other Enterprise SSDs we have tested –
The 4K 100% Write IOPS of 30,621 is an excellent result for
a ‘read intensive’ solution.
Now let’s head to the next page, where we look at the
results of the SNIA Write Saturation Test…..