On 9/1/21 8:17 AM, Erwan Velu wrote: > > Le 01/09/2021 à 16:05, Erwan Velu a écrit : >> >> [...] >> These numbers are perfect. >> >> I rebuild fio on a 5.4 kernel on a high-end nvme which is 1M iops read >> capable and got stuck at the same number as you aka 580K iops. >> >> So, I'd agree with you something is curious here. >> > Same on a 5.10.35. > > Jens, did we missed something here ? Read through the actual thread. It seriously sounds like the system is hitting bandwidth limits, which is very odd. 580K is not very much. Just curious, does it change anything if you use 512b blocks instead? -- Jens Axboe
