--drive-pacer = 100ms (default) --drive-pacer-burst = 100 (default) 100 transactions in 0.1 seconds is 1,000 transactions per second 1,000 transactions in per second is 100,000 transactions in 100 seconds. But no more than 20,000 transactions per 100 seconds is allowed to occure? I can see this…

Most of us have been using --drive-pacer-burst 200 --drive-pacer-min-sleep 10ms for quite a while now. As for --tpslimit, why would you need that at all?