SNIA IOPS TESTING
The Storage Networking Industry Association has an entire industry accepted performance test specification for solid state storage devices. Some of the tests are complicated to perform, but they allow us to look at some important performance metrics in a standard, objective way. Click to enlarge!
It is somewhat obvious that the P320h is more effective when operations trend more read-heavy. Amazingly, 512 byte IOPS are off the scale at over 1.4 million. That’s…. a lot. Given how much CPU horsepower it takes to generate 1.43 million transactions per second, we’ll have to investigate further a little later on.
4K random read IOPS are pegged at 785K throughout all 24 hours of testing. This chart is from rounds 18 to 22, but the 100% read tests are
Here is a snapshot of round 18. Every IOPS result for the 56 minutes of the round are listed here.
When we switch to the surface chart, it becomes even more evident that the P320h’s insane read performance is throwing off the scale. It looks like Mount Everest, only 1.4 million IOPS high. The write performance is impressive, but reads are just excellent.
Each 100% write (0% read) operation each round is listed here. After the 128K preconditioning, the P320h is already in steady state by the last few minutes of the first round (where all of the 100% write operations take place). We’re using these results to determine when the P320h hits steady state, and it sure doesn’t take long.