Performance of AR9287

[Adrian Chadd]

Ah. athctrl.sh ?




adrian

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