Not getting more than 65000 IOPS with xtreme setup

[stevecs]

Yeah, just found the arcmsr.h and it's limited to 256 commands max for the controller:
#define ARCMSR_MAX_OUTSTANDING_CMD 256

sorry about the script, I modified it when I posted it to more match what you were trying to do so there may have been a couple typos. This first batch is showing 1 thread at a time (Q=1) if you want to skip all that and just run it w/ the max 256 outstanding threads (just don't do the for loop and set it to 256) as that will flood the array. though if you did let it run it should show scalability based on queue depth which may be interesting if there is a leveling off at some point which we can map back to a bottleneck.