root@am335x-evm:~# ethtool -S eth0 NIC statistics: Good Rx Frames: 302 Broadcast Rx Frames: 92 Multicast Rx Frames: 206 Pause Rx Frames: 0 Rx CRC Errors: 0 Rx Align/Code Errors: 0 Oversize Rx Frames: 0 Rx Jabbers: 0 Undersize (Short) Rx Frames: 0 Rx Fragments: 0 Rx Octets: 58737 Good Tx Frames: 80 Broadcast Tx Frames: 2 Multicast Tx Frames: 77 Pause Tx Frames: 0 Deferred Tx Frames: 0 Collisions: 0 Single Collision Tx Frames: 0 Multiple Collision Tx Frames: 0 Excessive Collisions: 0 Late Collisions: 0 Tx Underrun: 0 Carrier Sense Errors: 0 Tx Octets: 13618 Rx + Tx 64 Octet Frames: 35 Rx + Tx 65-127 Octet Frames: 234 Rx + Tx 128-255 Octet Frames: 58 Rx + Tx 256-511 Octet Frames: 23 Rx + Tx 512-1023 Octet Frames: 16 Rx + Tx 1024-Up Octet Frames: 16 Net Octets: 72355 Rx Start of Frame Overruns: 0 Rx Middle of Frame Overruns: 0 Rx DMA Overruns: 0 Rx DMA chan: head_enqueue: 1 Rx DMA chan: tail_enqueue: 321 Rx DMA chan: pad_enqueue: 0 Rx DMA chan: misqueued: 0 Rx DMA chan: desc_alloc_fail: 0 Rx DMA chan: pad_alloc_fail: 0 Rx DMA chan: runt_receive_buf: 0 Rx DMA chan: runt_transmit_buf: 0 Rx DMA chan: empty_dequeue: 0 Rx DMA chan: busy_dequeue: 142 Rx DMA chan: good_dequeue: 194 Rx DMA chan: requeue: 0 Rx DMA chan: teardown_dequeue: 0 Tx DMA chan: head_enqueue: 80 Tx DMA chan: tail_enqueue: 0 Tx DMA chan: pad_enqueue: 0 Tx DMA chan: misqueued: 0 Tx DMA chan: desc_alloc_fail: 0 Tx DMA chan: pad_alloc_fail: 0 Tx DMA chan: runt_receive_buf: 0 Tx DMA chan: runt_transmit_buf: 8 Tx DMA chan: empty_dequeue: 80 Tx DMA chan: busy_dequeue: 0 Tx DMA chan: good_dequeue: 80 Tx DMA chan: requeue: 0 Tx DMA chan: teardown_dequeue: 0 root@am335x-evm:~# cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq 720000 root@am335x-evm:~# iperf -c 192.168.1.20 -P 5 -t 60 ------------------------------------------------------------ Client connecting to 192.168.1.20, TCP port 5001 TCP window size: 43.8 KByte (default) ------------------------------------------------------------ [ 5] local 192.168.1.1 port 51104 connected with 192.168.1.20 port 5001 [ 3] local 192.168.1.1 port 51098 connected with 192.168.1.20 port 5001 [ 7] local 192.168.1.1 port 51106 connected with 192.168.1.20 port 5001 [ 4] local 192.168.1.1 port 51100 connected with 192.168.1.20 port 5001 [ 6] local 192.168.1.1 port 51102 connected with 192.168.1.20 port 5001 [ ID] Interval Transfer Bandwidth [ 3] 0.0-60.0 sec 111 MBytes 15.5 Mbits/sec [ 6] 0.0-60.0 sec 110 MBytes 15.4 Mbits/sec [ 5] 0.0-60.1 sec 103 MBytes 14.4 Mbits/sec [ 7] 0.0-60.1 sec 103 MBytes 14.4 Mbits/sec [ 4] 0.0-60.1 sec 103 MBytes 14.4 Mbits/sec [SUM] 0.0-60.1 sec 529 MBytes 73.9 Mbits/sec root@am335x-evm:~# ethtool -S eth0 NIC statistics: Good Rx Frames: 227848 Broadcast Rx Frames: 111 Multicast Rx Frames: 249 Pause Rx Frames: 0 Rx CRC Errors: 0 Rx Align/Code Errors: 0 Oversize Rx Frames: 0 Rx Jabbers: 0 Undersize (Short) Rx Frames: 0 Rx Fragments: 0 Rx Octets: 15988664 Good Tx Frames: 385310 Broadcast Tx Frames: 3 Multicast Tx Frames: 78 Pause Tx Frames: 0 Deferred Tx Frames: 0 Collisions: 0 Single Collision Tx Frames: 0 Multiple Collision Tx Frames: 0 Excessive Collisions: 0 Late Collisions: 0 Tx Underrun: 0 Carrier Sense Errors: 0 Tx Octets: 581807704 Rx + Tx 64 Octet Frames: 60 Rx + Tx 65-127 Octet Frames: 227775 Rx + Tx 128-255 Octet Frames: 65 Rx + Tx 256-511 Octet Frames: 24 Rx + Tx 512-1023 Octet Frames: 4247 Rx + Tx 1024-Up Octet Frames: 380987 Net Octets: 597796368 Rx Start of Frame Overruns: 0 Rx Middle of Frame Overruns: 0 Rx DMA Overruns: 0 Rx DMA chan: head_enqueue: 1 Rx DMA chan: tail_enqueue: 227848 Rx DMA chan: pad_enqueue: 0 Rx DMA chan: misqueued: 0 Rx DMA chan: desc_alloc_fail: 0 Rx DMA chan: pad_alloc_fail: 0 Rx DMA chan: runt_receive_buf: 0 Rx DMA chan: runt_transmit_buf: 0 Rx DMA chan: empty_dequeue: 0 Rx DMA chan: busy_dequeue: 157299 Rx DMA chan: good_dequeue: 227721 Rx DMA chan: requeue: 0 Rx DMA chan: teardown_dequeue: 0 Tx DMA chan: head_enqueue: 360420 Tx DMA chan: tail_enqueue: 24890 Tx DMA chan: pad_enqueue: 0 Tx DMA chan: misqueued: 12405 Tx DMA chan: desc_alloc_fail: 0 Tx DMA chan: pad_alloc_fail: 0 Tx DMA chan: runt_receive_buf: 0 Tx DMA chan: runt_transmit_buf: 9 Tx DMA chan: empty_dequeue: 360420 Tx DMA chan: busy_dequeue: 3497 Tx DMA chan: good_dequeue: 385310 Tx DMA chan: requeue: 3156 Tx DMA chan: teardown_dequeue: 0