On Mon, Jan 8, 2018 at 8:34 AM, AceLan Kao <acelan.kao@xxxxxxxxxxxxx> wrote: > > Hi all, > > Forgot to append the device info, here it is. > > 02:00.0 Network controller [0280]: Intel Corporation Device [8086:2526] (rev 29) > Subsystem: Intel Corporation Device [8086:4010] > > Best regards, > AceLan Kao. > > 2018-01-08 14:25 GMT+08:00 AceLan Kao <acelan.kao@xxxxxxxxxxxxx>: > > Hi all, > > > > We found that Intel 9000 series wifi cards have tx performance issue > > on 5G network. > > Here are the test result. > > > > Client(10.101.46.25) is the platform with 9260 wifi card on 5G > > network, and server(10.101.46.219) is another machine with ethernet > > network. > > I think this matches this bug: https://bugzilla.kernel.org/show_bug.cgi?id=198351 > > kernel v4.15-rc5 with firmware API 33 > > > > acelan@u-Kabylake-Client-platform ~ % iperf -c 10.101.46.219 -er > > ------------------------------------------------------------ > > Server listening on TCP port 5001 with pid 2248 > > Read buffer size: 1.44 KByte > > TCP window size: 85.3 KByte (default) > > ------------------------------------------------------------ > > ------------------------------------------------------------ > > Client connecting to 10.101.46.219, TCP port 5001 with pid 2248 > > Write buffer size: 128 KByte > > TCP window size: 85.0 KByte (default) > > ------------------------------------------------------------ > > [ 5] local 10.101.46.25 port 54308 connected with 10.101.46.219 port 5001 > > [ ID] Interval Transfer Bandwidth Write/Err Rtry Cwnd/RTT > > [ 5] 0.00-11.06 sec 7.75 MBytes 5.88 Mbits/sec 1/0 77 7K/165143 us > > [ 4] local 10.101.46.25 port 5001 connected with 10.101.46.219 port 38816 > > [ ID] Interval Transfer Bandwidth Reads Dist(bin=0.2K) > > [ 4] 0.00-10.31 sec 77.0 MBytes 62.7 Mbits/sec 55729 > > 49:23:176:59:1140:294:168:53820 > > > > ------------------------------------------------------------ > > > > With firmware API 34, no luck > > > > acelan@u-Kabylake-Client-platform ~ % iperf -c 10.101.46.219 -er > > ------------------------------------------------------------ > > Server listening on TCP port 5001 with pid 2138 > > Read buffer size: 1.44 KByte > > TCP window size: 85.3 KByte (default) > > ------------------------------------------------------------ > > ------------------------------------------------------------ > > Client connecting to 10.101.46.219, TCP port 5001 with pid 2138 > > Write buffer size: 128 KByte > > TCP window size: 187 KByte (default) > > ------------------------------------------------------------ > > [ 5] local 10.101.46.25 port 43560 connected with 10.101.46.219 port 5001 > > [ ID] Interval Transfer Bandwidth Write/Err Rtry Cwnd/RTT > > [ 5] 0.00-10.01 sec 896 KBytes 733 Kbits/sec 1/0 58 7K/140474 us > > [ 4] local 10.101.46.25 port 5001 connected with 10.101.46.219 port 38844 > > [ ID] Interval Transfer Bandwidth Reads Dist(bin=0.2K) > > [ 4] 0.00-10.11 sec 79.8 MBytes 66.2 Mbits/sec 57744 > > 37:6:191:52:1236:413:143:55666 > > > > Any ideas? > > > > Best regards, > > AceLan Kao.
