ADVANCED WRITE TESTING
As we talked about in our Micron P400m SSD Review, SSDs have different performance states. Since the SMART CloudSpeed 1000E is an enterprise SSD, we will focus on steady state performance.
With the following tests, we stressed the drive using random 4KB write workloads across the entire span for at least 24 hours. This is more than enough to achieve steady state. The following graph is showing the latency and IOPS across an 11 hour span.
The above graph shows the 1 minute averages over 11 hours. So far so good. The 1000E delivers a very tight distribution of IOPS and latency. You can see some periodic events happening (garbage collection, wear leveling, etc.), but they have very little impact on the overall performance.
When we zoom into the last hour and look at the per second average, you can see that there really isn’t anything to worry about in terms of maximum latency. Even a very short, 1 second average is enough to obscure the maximums. What that tells us, is that only a handful, if even that, of the 30K operations per second, are reaching the 60ms level.
We have always admired the performance consistency of SMART SSDs at steady state, the 1000E is no different.