Date: Sat, 22 Sep 2012 11:04:42 +0200 From: Johann Hugo <jhugo@meraka.csir.co.za> To: Adrian Chadd <adrian.chadd@gmail.com> Cc: freebsd-wireless@freebsd.org Subject: Re: Performance of AR9287 Message-ID: <201209221104.43360.jhugo@meraka.csir.co.za> In-Reply-To: <CAJ-VmomWU8qWVgRws7=ewVX%2BxZZ-2L-0KBB4d=q1Uijsfq5u-g@mail.gmail.com> References: <201209202357.06358.dantavious313@gmail.com> <201209221020.16702.jhugo@meraka.csir.co.za> <CAJ-VmomWU8qWVgRws7=ewVX%2BxZZ-2L-0KBB4d=q1Uijsfq5u-g@mail.gmail.com>
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I'm still using a utility from Sam. athctrl -d 8000 Setup IFS parameters on interface ath0 for 8000 meter p-2-p link dev.ath.0.slottime=36 dev.ath.0.acktimeout=75 dev.ath.0.ctstimeout=75 Are these settings still good ? Are there any way do detect these automatically ? Johann On Saturday 22 September 2012 10:24:43 Adrian Chadd wrote: > I assume you've tweaked the ack, slot, rtsctstimeout? > > The 11n rate control code is a little more jumpy. I've fixed that in > recent checkins. It's not optimal but now it's not as jumpy as before. > > Update to -HEAD, then use 'athratestats' on the peer MAC address. It's > quite useful to see what's actually going on. :-) > > > > Adrian > > On 22 September 2012 01:20, Johann Hugo <jhugo@meraka.csir.co.za> wrote: > > On Saturday 22 September 2012 02:05:23 Derrick Edwards wrote: > >> Thanks again for looking into this. > >> > >> My main concern was the range of network performance that I was getting > >> > >> when the laptop was right in front of the access point. As you can see > >> > >> bandwith varied greatly. > > > > I don't know if it's related, but my RSSI and RATE jumps around quite a > > lot while transfering a large file. > > > > > > > > Output from loop doing "ifconfig wlan0 list sta" while transfering a big > > file. > > > > > > > > ADDR AID CHAN RATE RSSI IDLE TXSEQ RXSEQ CAPS FLAG > > > > 00:0c:42:6c:58:29 1 128 86M 16.5 0 842 9440 E AQHTR HTCAP WME > > > > ADDR AID CHAN RATE RSSI IDLE TXSEQ RXSEQ CAPS FLAG > > > > 00:0c:42:6c:58:29 1 128 43M 12.5 0 1063 14784 E AQHTR HTCAP WME > > > > ADDR AID CHAN RATE RSSI IDLE TXSEQ RXSEQ CAPS FLAG > > > > 00:0c:42:6c:58:29 1 128 43M 15.5 0 1362 21088 E AQHTR HTCAP WME > > > > ADDR AID CHAN RATE RSSI IDLE TXSEQ RXSEQ CAPS FLAG > > > > 00:0c:42:6c:58:29 1 128 86M 15.5 0 1627 27488 E AQHTR HTCAP WME > > > > ADDR AID CHAN RATE RSSI IDLE TXSEQ RXSEQ CAPS FLAG > > > > 00:0c:42:6c:58:29 1 128 86M 13.5 0 2150 38976 E AQHTR HTCAP WME > > > > ADDR AID CHAN RATE RSSI IDLE TXSEQ RXSEQ CAPS FLAG > > > > 00:0c:42:6c:58:29 1 128 86M 11.5 0 2289 42384 E AQHTR HTCAP WME > > > > ADDR AID CHAN RATE RSSI IDLE TXSEQ RXSEQ CAPS FLAG > > > > 00:0c:42:6c:58:29 1 128 29M 24.5 0 3075 60016 E AQHTR HTCAP WME > > > > ADDR AID CHAN RATE RSSI IDLE TXSEQ RXSEQ CAPS FLAG > > > > 00:0c:42:6c:58:29 1 128 86M 28.5 0 3369 1600 E AQHTR HTCAP WME > > > > ADDR AID CHAN RATE RSSI IDLE TXSEQ RXSEQ CAPS FLAG > > > > 00:0c:42:6c:58:29 1 128 86M 14.0 0 3839 11744 E AQHTR HTCAP WME > > > > ADDR AID CHAN RATE RSSI IDLE TXSEQ RXSEQ CAPS FLAG > > > > 00:0c:42:6c:58:29 1 128 29M 13.5 0 87 19936 E AQHTR HTCAP WME > > > > ADDR AID CHAN RATE RSSI IDLE TXSEQ RXSEQ CAPS FLAG > > > > 00:0c:42:6c:58:29 1 128 58M 11.5 0 403 27440 E AQHTR HTCAP WME > > > > ADDR AID CHAN RATE RSSI IDLE TXSEQ RXSEQ CAPS FLAG > > > > 00:0c:42:6c:58:29 1 128 58M 12.5 0 758 35200 E AQHTR HTCAP WME > > > > ADDR AID CHAN RATE RSSI IDLE TXSEQ RXSEQ CAPS FLAG > > > > 00:0c:42:6c:58:29 1 128 58M 11.0 0 1054 42320 E AQHTR HTCAP WME > > > > ADDR AID CHAN RATE RSSI IDLE TXSEQ RXSEQ CAPS FLAG > > > > 00:0c:42:6c:58:29 1 128 58M 23.5 0 1249 46512 E AQHTR HTCAP WME > > > > ADDR AID CHAN RATE RSSI IDLE TXSEQ RXSEQ CAPS FLAG > > > > 00:0c:42:6c:58:29 1 128 29M 11.0 0 1381 49312 E AQHTR HTCAP WME > > > > ADDR AID CHAN RATE RSSI IDLE TXSEQ RXSEQ CAPS FLAG > > > > 00:0c:42:6c:58:29 1 128 58M 11.5 0 1584 54224 E AQHTR HTCAP WME > > > > > > > > System info = hybrid > > > > HW = gateworks ARM > > > > OS = FreeBSD-9 with ath code from current > > > > Wifi = RouterBOARD R52nM = AR9220 > > > > Distance = 8km > > > > > > > > B.t.w if I use the same HW with FreeBSD-9 in 11a mode, then RSSI does not > > jump around and I get about the same throuput as with N. > > > > > > > > I don't have any athstats output, still working on it. > > > > > > > > Johann r
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