Bench not working on RPI

[takenek]

hey,
I run a bench on my RPI 4b but after check IO Speed he exit without error/warning - he don`t check Internet connection speed:

----------------------------------------------------------------------
 CPU Model             : ARMv7 Processor rev 3 (v7l)
 CPU Cores             : 4
 CPU Frequency         :  MHz
 CPU Cache             :
 Total Disk            : 7.2 GB (3.8 GB Used)
 Total Mem             : 3827 MB (95 MB Used)
 Total Swap            : 99 MB (0 MB Used)
 System uptime         : 8 days, 8 hour 39 min
 Load average          : 0.23, 0.21, 0.17
 OS                    : Raspbian GNU/Linux 10
 Arch                  : armv7l (32 Bit)
 Kernel                : 5.10.17-v7l+
 TCP CC                : cubic
 Virtualization        : Dedicated
 Organization          : XXX
 Location              : XXX
 Region                : XXX
----------------------------------------------------------------------
 I/O Speed(1st run)    : 12.4 MB/s
 I/O Speed(2nd run)    : 11.8 MB/s
 I/O Speed(3rd run)    : 11.0 MB/s
 Average I/O speed     : 11.7 MB/s
----------------------------------------------------------------------
 Node Name        Upload Speed      Download Speed      Latency
----------------------------------------------------------------------
root@radvd:~# w

Best Regards
TaKeN