Date: Wed, 31 Jul 2013 15:36:53 +0200 From: "Cedric GROSS" <cg@cgross.info> To: <freebsd-wireless@freebsd.org> Subject: RE: Wifi rates Message-ID: <001e01ce8df3$06377470$12a65d50$@info> In-Reply-To: <CAJ-Vmon0fZc6UieB7P2D5OOMDkZHP2PYJvFc2D8Sk7K-gmxWiQ@mail.gmail.com> References: <00b101ce8c8b$3db5f200$b921d600$@info> <CAJ-Vmo=y609_w2dMyLkgOpd24poRJKqn=LPW%2BQGi7z346xTZrQ@mail.gmail.com> <000c01ce8d07$d10a6550$731f2ff0$@info> <CAJ-Vmon0fZc6UieB7P2D5OOMDkZHP2PYJvFc2D8Sk7K-gmxWiQ@mail.gmail.com>
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Hello, > > Right, there's HT elements in there, so it looks likely you properly > negotiated HT. > > > > And the amrr output : > > Test kernel: wlan0: [00:24:d4:97:80:20] amrr_node_init: non-11n node > > Test kernel: wlan0: [00:24:d4:97:80:20] AMRR: nrates=0, initial rate > 0 > > That's the initial "I don't know what you are yet" selection. > > > Test kernel: wlan0: [00:24:d4:97:80:20] amrr_node_init: 11n node Test > > kernel: wlan0: [00:24:d4:97:80:20] AMRR: nrates=16, initial rate 128 > > Here it negotiated 11n. The initial rate is 0x80, so MCS 0. > I made progress : Jul 31 14:59:40 Test kernel: wlan0: [00:24:d4:97:80:20] AMRR: current rate 15, txcnt=11, retrycnt=0 Jul 31 14:59:48 Test kernel: wlan0: [00:24:d4:97:80:20] AMRR: current rate 15, txcnt=11, retrycnt=0 Jul 31 14:59:50 Test kernel: wlan0: [00:24:d4:97:80:20] AMRR: current rate 15, txcnt=11, retrycnt=0 Jul 31 14:59:59 Test kernel: wlan0: [00:24:d4:97:80:20] AMRR: current rate 15, txcnt=11, retrycnt=0 Jul 31 15:00:01 Test kernel: wlan0: [00:24:d4:97:80:20] AMRR: current rate 15, txcnt=11, retrycnt=0 Jul 31 15:00:02 Test kernel: wlan0: [00:24:d4:97:80:20] AMRR: current rate 15, txcnt=158, retrycnt=0 Jul 31 15:00:02 Test kernel: wlan0: [00:24:d4:97:80:20] AMRR: current rate 15, txcnt=255, retrycnt=0 Jul 31 15:00:03 Test kernel: wlan0: [00:24:d4:97:80:20] AMRR: current rate 15, txcnt=260, retrycnt=4 Jul 31 15:00:03 Test kernel: wlan0: [00:24:d4:97:80:20] AMRR: current rate 15, txcnt=160, retrycnt=0 Jul 31 15:00:04 Test kernel: wlan0: [00:24:d4:97:80:20] AMRR: current rate 15, txcnt=132, retrycnt=0 Jul 31 15:00:04 Test kernel: wlan0: [00:24:d4:97:80:20] AMRR: current rate 15, txcnt=213, retrycnt=0 Jul 31 15:00:05 Test kernel: wlan0: [00:24:d4:97:80:20] AMRR: current rate 15, txcnt=203, retrycnt=0 Jul 31 15:00:05 Test kernel: wlan0: [00:24:d4:97:80:20] AMRR: current rate 15, txcnt=214, retrycnt=0 Jul 31 15:00:06 Test kernel: wlan0: [00:24:d4:97:80:20] AMRR: current rate 15, txcnt=186, retrycnt=1 Jul 31 15:00:06 Test kernel: wlan0: [00:24:d4:97:80:20] AMRR: current rate 15, txcnt=216, retrycnt=2 Jul 31 15:00:07 Test kernel: wlan0: [00:24:d4:97:80:20] AMRR: current rate 15, txcnt=243, retrycnt=1 Jul 31 15:00:08 Test kernel: wlan0: [00:24:d4:97:80:20] AMRR: current rate 15, txcnt=185, retrycnt=0 Jul 31 15:00:08 Test kernel: wlan0: [00:24:d4:97:80:20] AMRR: current rate 15, txcnt=122, retrycnt=0 Jul 31 15:00:09 Test kernel: wlan0: [00:24:d4:97:80:20] AMRR: current rate 15, txcnt=133, retrycnt=0 Jul 31 15:00:09 Test kernel: wlan0: [00:24:d4:97:80:20] AMRR: current rate 15, txcnt=185, retrycnt=2 Jul 31 15:00:10 Test kernel: wlan0: [00:24:d4:97:80:20] AMRR: current rate 15, txcnt=165, retrycnt=0 Jul 31 15:00:11 Test kernel: wlan0: [00:24:d4:97:80:20] AMRR: current rate 15, txcnt=114, retrycnt=0 Jul 31 15:00:28 Test kernel: wlan0: [00:24:d4:97:80:20] AMRR: current rate 15, txcnt=11, retrycnt=0 Jul 31 15:00:29 Test kernel: wlan0: [00:24:d4:97:80:20] AMRR: current rate 15, txcnt=227, retrycnt=0 Jul 31 15:00:29 Test kernel: wlan0: [00:24:d4:97:80:20] AMRR: current rate 15, txcnt=255, retrycnt=0 Jul 31 15:00:30 Test kernel: wlan0: [00:24:d4:97:80:20] AMRR: current rate 15, txcnt=241, retrycnt=0 Jul 31 15:00:30 Test kernel: wlan0: [00:24:d4:97:80:20] AMRR: current rate 15, txcnt=99, retrycnt=0 Jul 31 15:00:31 Test kernel: wlan0: [00:24:d4:97:80:20] AMRR: current rate 15, txcnt=199, retrycnt=0 Jul 31 15:00:31 Test kernel: wlan0: [00:24:d4:97:80:20] AMRR: current rate 15, txcnt=111, retrycnt=2 Jul 31 15:00:32 Test kernel: wlan0: [00:24:d4:97:80:20] AMRR: current rate 15, txcnt=171, retrycnt=0 Jul 31 15:00:33 Test kernel: wlan0: [00:24:d4:97:80:20] AMRR: current rate 15, txcnt=210, retrycnt=3 Jul 31 15:00:33 Test kernel: wlan0: [00:24:d4:97:80:20] AMRR: current rate 15, txcnt=122, retrycnt=1 Jul 31 15:00:34 Test kernel: wlan0: [00:24:d4:97:80:20] AMRR: current rate 15, txcnt=218, retrycnt=0 Jul 31 15:00:35 Test kernel: wlan0: [00:24:d4:97:80:20] AMRR: current rate 15, txcnt=95, retrycnt=1 Jul 31 15:00:43 Test kernel: wlan0: [00:24:d4:97:80:20] AMRR: current rate 15, txcnt=11, retrycnt=0 Jul 31 15:00:44 Test kernel: wlan0: [00:24:d4:97:80:20] AMRR: current rate 15, txcnt=22, retrycnt=0 Jul 31 15:01:56 Test kernel: wlan0: [60:36:dd:93:34:56] amrr_node_init: non-11n node Jul 31 15:01:56 Test kernel: wlan0: [60:36:dd:93:34:56] AMRR: nrates=0, initial rate 0 File transfer is still chaotic but start well. I've done a TCP dump during transfer. It's seem that TCP window fill up and it's why transfer stop and speed going down. Sometime transfer restart, sometime just hang. Just to be sure: window size value in TCP packet is the window size available from emitter ? > > > -adrian Cedric
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