A few other parameters I left out Channel:48 Bandwidth: 80 MHz (max allowed for this compex card using Qualcomm-Atheros QCA9880)
As this is an indoor lab bench test over 2 metres - I don't think the channel interference should matter much (reported noise is -102 dBm) I tried: iw wlan0-mesh set bitrates vht-mcs-5 3:0-9 (i.e. force to 11ac mode with 3 streams) which sometimes caused the kernel to crash ... logs showed: ath10k_pci 0000:00:00.0: firmware crashed! The ath10k-ct driver didn't crash with this command but it actually made the speed worse On Fri, Oct 5, 2018 at 1:17 PM David Johnson <david.lloyd.john...@gmail.com> wrote: > > I'm trying to see what max speed can be achieved > > My setup is as follow: > Board: Compex WPJ 563 > Card Compex wle900vx > OS: Libremesh running openwrt 18.06 > Driver: ath10k_pci 0000:00:00.0: firmware ver 10.2.4-1.0-00033 api 5 > features no-p2p,raw-mode,mfp,allows-mesh-bcast crc32 c41417d0 > Firmware: firmware-5.bin_10.2.4-1.0-00041 > > Physical setup > Connected 3 6dBi antennas on each side to CH0, CH1, CH2 port to > achieve 3x3 mimo. Distance between 2 devices is 2m on a bench. Set > power level on each end to 8 dBm to ensure I don't saturate radios > > Status of radio Node A > iwinfo wlan0-mesh info > wlan0-mesh ESSID: "speedtest" > Access Point: 04:F0:21:3E:DA:A2 > Mode: Client Channel: 48 (5.240 GHz) > Tx-Power: 8 dBm Link Quality: 70/70 > Signal: -33 dBm Noise: -102 dBm > Bit Rate: 6.0 MBit/s > Encryption: none > Type: nl80211 HW Mode(s): 802.11bgnac > Hardware: 168C:003C 0000:0000 [Qualcomm Atheros QCA9880] > TX power offset: none > Frequency offset: none > Supports VAPs: yes PHY name: phy0 > > Status of radio Node B > wlan0-mesh ESSID: "speedtest" > Access Point: 04:F0:21:3E:DA:A2 > Mode: Master Channel: 48 (5.240 GHz) > Tx-Power: 8 dBm Link Quality: 65/70 > Signal: -45 dBm Noise: -105 dBm > Bit Rate: 6.0 MBit/s > Encryption: none > Type: nl80211 HW Mode(s): 802.11bgnac > Hardware: 168C:003C 0000:0000 [Qualcomm Atheros QCA9880] > TX power offset: none > Frequency offset: none > Supports VAPs: yes PHY name: phy0 > > > Ping between radios > > root@FlatsEast:~# ping 10.69.0.1 > PING 10.69.0.1 (10.69.0.1) 56(84) bytes of data. > 64 bytes from 10.69.0.1: icmp_req=1 ttl=64 time=1.29 ms > 64 bytes from 10.69.0.1: icmp_req=2 ttl=64 time=1.22 ms > 64 bytes from 10.69.0.1: icmp_req=3 ttl=64 time=1.22 ms > > Used iperf to set throughput > Client side > iperf -c 10.69.0.1 -P 10 -i 5 -t 120 > > Server side > iperf -s > > Best performance achieved after waiting for TCP to stabalize: 139 Mbps > [ 12] 45.0-50.0 sec 11.8 MBytes 19.7 Mbits/sec > [ 11] 45.0-50.0 sec 7.12 MBytes 12.0 Mbits/sec > [ 9] 45.0-50.0 sec 8.12 MBytes 13.6 Mbits/sec > [ 6] 45.0-50.0 sec 7.75 MBytes 13.0 Mbits/sec > [ 8] 45.0-50.0 sec 8.00 MBytes 13.4 Mbits/sec > [ 4] 45.0-50.0 sec 7.75 MBytes 13.0 Mbits/sec > [ 3] 45.0-50.0 sec 7.75 MBytes 13.0 Mbits/sec > [ 10] 45.0-50.0 sec 6.62 MBytes 11.1 Mbits/sec > [ 7] 45.0-50.0 sec 7.88 MBytes 13.2 Mbits/sec > [ 5] 45.0-50.0 sec 9.88 MBytes 16.6 Mbits/sec > [SUM] 45.0-50.0 sec 82.6 MBytes 139 Mbits/sec > > top: > > Mem: 47064K used, 78232K free, 188K shrd, 3936K buff, 10564K cached > CPU: 19% usr 36% sys 0% nic 0% idle 0% io 0% irq 43% sirq > Load average: 4.59 3.06 1.90 3/74 25823 > PID PPID USER STAT VSZ %VSZ %CPU COMMAND > 3 2 root RW 0 0% 32% [ksoftirqd/0] > 24511 4419 root S 33320 27% 22% iperf -c 10.69.0.1 -P 10 -i 5 -t 120 > > Any suggestions > > Regards > David > > -- > Dr David Johnson > Director, Ammbr Research Labs South Africa > Part of the AmmbrTech Group > http://www.ammbrtech.com > > Adjunct Senior Lecturer > ICT4D, Computer Science Department > University of Cape Town > https://people.cs.uct.ac.za/~djohnson/ _______________________________________________ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel