Hello,
I have banana pi m2u and raspberry pi model 3b+ . Physically they located next to each other and connected to the same wifi network. Ping on rpi 3b+ is stable (1-7 ms), ping on bpi m2u is very unstable. I don’t use external antennas for both devices. What can I do to have the same wifi quality for bpi as I have for rpi?
BPI results:
pi@bpi-iot-ros-ai:~ $ date ; iwconfig wlan0 ; ping -c 10 192.168.3.1 Mon Jun 11 09:42:09 MSK 2018 wlan0 IEEE 802.11bgn ESSID:"HUAWEI-DDKAK2" Mode:Managed Frequency:2.422 GHz Access Point: 78:6A:89:5D:96:D0 Bit Rate=72 Mb/s Tx-Power=31 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:on Link Quality=58/70 Signal level=-52 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:4 Invalid misc:1 Missed beacon:0 PING 192.168.3.1 (192.168.3.1) 56(84) bytes of data. 64 bytes from 192.168.3.1: icmp_seq=1 ttl=64 time=2.18 ms 64 bytes from 192.168.3.1: icmp_seq=2 ttl=64 time=188 ms 64 bytes from 192.168.3.1: icmp_seq=3 ttl=64 time=108 ms 64 bytes from 192.168.3.1: icmp_seq=4 ttl=64 time=8.16 ms 64 bytes from 192.168.3.1: icmp_seq=5 ttl=64 time=7.01 ms 64 bytes from 192.168.3.1: icmp_seq=6 ttl=64 time=173 ms 64 bytes from 192.168.3.1: icmp_seq=7 ttl=64 time=94.8 ms 64 bytes from 192.168.3.1: icmp_seq=8 ttl=64 time=8.28 ms 64 bytes from 192.168.3.1: icmp_seq=9 ttl=64 time=1.94 ms 64 bytes from 192.168.3.1: icmp_seq=10 ttl=64 time=6.97 ms --- 192.168.3.1 ping statistics --- 10 packets transmitted, 10 received, 0% packet loss, time 9014ms rtt min/avg/max/mdev = 1.947/59.890/188.155/71.035 ms pi@bpi-iot-ros-ai:~ $ uname -a Linux bpi-iot-ros-ai 3.10.107-BPI-M2U-Kernel #1 SMP Thu Aug 24 08:01:24 CST 2017 armv7l GNU/Linux pi@bpi-iot-ros-ai:~ $ cat /etc/issue Raspbian GNU/Linux 9 \n \l =========================================
RPI results
pi@raspberrypi:~ $ date ; iwconfig wlan0 ; ping -c 10 192.168.3.1 Mon Jun 11 09:42:08 MSK 2018 wlan0 IEEE 802.11 ESSID:"HUAWEI-DDKAK2" Mode:Managed Frequency:2.422 GHz Access Point: 78:6A:89:5D:96:D0 Bit Rate=48 Mb/s Tx-Power=31 dBm Retry short limit:7 RTS thr:off Fragment thr:off Power Management:on Link Quality=65/70 Signal level=-45 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:1 Invalid misc:0 Missed beacon:0 PING 192.168.3.1 (192.168.3.1) 56(84) bytes of data. 64 bytes from 192.168.3.1: icmp_seq=1 ttl=64 time=1.24 ms 64 bytes from 192.168.3.1: icmp_seq=2 ttl=64 time=1.11 ms 64 bytes from 192.168.3.1: icmp_seq=3 ttl=64 time=1.06 ms 64 bytes from 192.168.3.1: icmp_seq=4 ttl=64 time=6.17 ms 64 bytes from 192.168.3.1: icmp_seq=5 ttl=64 time=2.60 ms 64 bytes from 192.168.3.1: icmp_seq=6 ttl=64 time=1.14 ms 64 bytes from 192.168.3.1: icmp_seq=7 ttl=64 time=1.97 ms 64 bytes from 192.168.3.1: icmp_seq=8 ttl=64 time=1.87 ms 64 bytes from 192.168.3.1: icmp_seq=9 ttl=64 time=1.17 ms 64 bytes from 192.168.3.1: icmp_seq=10 ttl=64 time=1.09 ms --- 192.168.3.1 ping statistics --- 10 packets transmitted, 10 received, 0% packet loss, time 9012ms rtt min/avg/max/mdev = 1.067/1.946/6.173/1.490 ms pi@raspberrypi:~ $ uname -a Linux raspberrypi 4.14.34-v7+ #1110 SMP Mon Apr 16 15:18:51 BST 2018 armv7l GNU/Linux pi@raspberrypi:~ $ cat /etc/issue Raspbian GNU/Linux 9 \n \l =========================================