Date: Thu, 8 Sep 2011 19:13:03 +0400 From: Lev Serebryakov <lev@serebryakov.spb.ru> To: Adrian Chadd <adrian@freebsd.org> Cc: freebsd-wireless@freebsd.org Subject: Re: AP performance (again): txpower regulation Message-ID: <1273865639.20110908191303@serebryakov.spb.ru> In-Reply-To: <CAJ-Vmo==J_9ZhnSciVKNaEaMhM4oeM9fr4yjzPev_MW3g9DALg@mail.gmail.com> References: <663133681.20110907193747@serebryakov.spb.ru> <CAJ-Vmonai4LzwanLw7i5d-NyjN2b6GqfttjkdcROvOuEcuzEAw@mail.gmail.com> <437702009.20110907235248@serebryakov.spb.ru> <CAJ-Vmo=R-a%2BqhDLWj1n%2BBj70Pmg4WSL6bVZ6jwCUmNq=v7EBBw@mail.gmail.com> <426917282.20110908125907@serebryakov.spb.ru> <CAAUsrB5Qtokpcz-koUfYWCHrsnUUErQSAYHrXrW2F0Uvp3RzSA@mail.gmail.com> <4610390305.20110908154130@serebryakov.spb.ru> <CAAUsrB6LJ%2BmuTvaqHCySh6e9dMjzshohYFE4PQ3KTezZMZS2JA@mail.gmail.com> <1705262661.20110908180850@serebryakov.spb.ru> <CAAUsrB7CFu096x%2BKKWa=8O_VeSHOK10LuwJ2rWq6r8EidUrL=Q@mail.gmail.com> <CAJ-VmokvXfUAZpxDgv5gLrRdLYn3YwTXAOb7QiTyUg8K5yKLHg@mail.gmail.com> <458771414.20110908183656@serebryakov.spb.ru> <CAJ-Vmom_ZHKbqt%2BQgmdq_oPU-SugbrJ3LNS=g-cpcQ7KExusUw@mail.gmail.com> <4910491962.20110908185213@serebryakov.spb.ru> <CAJ-Vmo==J_9ZhnSciVKNaEaMhM4oeM9fr4yjzPev_MW3g9DALg@mail.gmail.com>
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Hello, Adrian.
You wrote 8 =F1=E5=ED=F2=FF=E1=F0=FF 2011 =E3., 19:07:37:
> Right, but please keep in mind that stronger TX power doesn't make the
> signal "magically" more reliable and higher throughput. Sure it can
> help, but if your problem is interference, you're not going to win by
> just buying a more powerful NIC.
I understand that... But interference over all range... It will be very
sad :(
> Have you compiled up athstats and have it available on your AP? What's
> it say when you run it?
Yep, it is available (9-BETA2 now, iperf is running for about half a
hour, second antenna is not attached, as I didn't plan to use 5Ghz):
4936697 data frames received
9101605 data frames transmit
99995 tx frames with an alternate rate
1393550 long on-chip tx retries
12917 tx failed 'cuz too many retries
54M current transmit rate
19218 tx stopped 'cuz no xmit buffer
5 tx failed 'cuz dma buffer allocation failed
387 tx frames with no ack marked
9085818 tx frames with short preamble
29941 rx failed 'cuz of bad CRC
56 rx failed 'cuz of PHY err
56 CCK restart
119985 beacons transmitted
411 periodic calibrations
-0/+0 TDMA slot adjust (usecs, smoothed)
37 rssi of last ack
30 avg recv rssi
-96 rx noise floor
15402 tx frames through raw api
5 raw tx failed 'cuz interface/hw down
41 cabq frames transmitted
26 cabq xmit overflowed beacon interval
37 switched default/rx antenna
4 noise immunity level
2 spur immunity level
80 listen time
31 ANI increased noise immunity
3 ANI decrease noise immunity
1930 ANI increased spur immunity
1916 ANI decrease spur immunity
13 ANI enabled OFDM weak signal detect
13 ANI disabled CCK weak signal threshold
39809373 cumulative OFDM phy error count
561387 cumulative CCK phy error count
254 ANI forced listen time to zero
1393023 missing ACK's
41881 bad FCS
13 average rssi (beacons only)
Antenna profile:
[1] tx 8543738 rx 4922481
[2] tx 544837 rx 14216
--=20
// Black Lion AKA Lev Serebryakov <lev@serebryakov.spb.ru>
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