> That is absolutely not representative of a real workload of mixed reads and writes, different block sizes, potentially different queue depths, all coming in o

> That is absolutely not representative of a real workload of mixed reads and writes, different block sizes, potentially different queue depths, all coming in on hundreds or maybe thousands of different volumes. if you see bottleneck there, it could be that actual SSD speed is maybe irrelevant in your case since upstream software is not optimized.