Date: Fri, 9 Sep 2011 23:37:57 +0800 From: Adrian Chadd <adrian@freebsd.org> To: Lev Serebryakov <lev@serebryakov.spb.ru> Cc: freebsd-wireless@freebsd.org Subject: Re: AP performance (again): txpower regulation Message-ID: <CAJ-VmomOwpsmtoLqDO-=%2B_B_Ed0mnkuT%2BT5w5wuf2%2BLyjKmbAw@mail.gmail.com> In-Reply-To: <192542574.20110909193326@serebryakov.spb.ru> 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> <1273865639.20110908191303@serebryakov.spb.ru> <1607911768.20110909113824@serebryakov.spb.ru> <CAJ-VmokAvtKTUGo5zBS3ry0nRH=P%2B1TNB2n-9dKK%2BSWn6FdJ2A@mail.gmail.com> <140679489.20110909154614@serebryakov.spb.ru> <CAJ-VmomQQGgSf=R8A1bvF9s_FqWBaCCzwFjG5eaoWAOhjHKkiw@mail.gmail.com> <CAJ-VmonUioh4g3NScinYDU6gEFWDLeGKUYQfRyNoWr5%2BfjQeTw@mail.gmail.com> <192542574.20110909193326@serebryakov.spb.ru>
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Look at all of those OFDM errors. That's a big, big part of your problem. It's possible that there's some problem with the driver code and it's somehow setting up the RX side of your NIC incorrectly, causing lots of those OFDM errors. But it's also very likely you've just got a lot of noise in your local environment. You could try disabling ANI (sysctl dev.ath.0.intmit=0) and see if things behave better/worse. You won't get OFDM/CCK error counts though, so don't assume "0" for those counts magically means they went away. I haven't yet tidied up and committed tools which let you tweak the ANI settings manually. This may be of some help/interest to you. Finally, if you/someone sends me one of those NICs, I can try using it here and see how it behaves. :) Adrian
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