Date: Tue, 3 Dec 2013 01:34:45 -0800 From: Adrian Chadd <adrian@freebsd.org> To: "R. Tyler Croy" <tyler@monkeypox.org> Cc: freebsd-wireless@freebsd.org Subject: Re: iwn(4) driver showing poor performance, variable media selection on 10.0-BETA3 Message-ID: <CAJ-VmokVjS3X1SeH2XD8AOz3c1Bgms091W9XdiH-rD6%2B%2Bw1FFw@mail.gmail.com> In-Reply-To: <20131203074749.GE14900@kiwi.coupleofllamas.com> References: <20131203074749.GE14900@kiwi.coupleofllamas.com>
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What's the pci id string? Pciconf -lv On Dec 2, 2013 11:48 PM, "R. Tyler Croy" <tyler@monkeypox.org> wrote: > I recently installed FreeBSD 10.0-BETA3 onto my Thinkpad X200, everything > is > largely running fine except the wireless performance leaves a lot to be > desired. > > I've got an older Thinkpad T43 running -CURRENT next to the X200 in the > same > exact room, same distance from the AP, but with an iwi(4) card in it. > > The T43 will download large files between 100-200KB/s, and the "media" > mode for > wlan0 is "OFDM/48Mbps" which seems non-crazy. > > The X200 however will get between 20-90KB/s on the same files, and the > "media" > mode will oscillate *dramatically* during the transfer. I've watched it go > from > OFDM/54Mbps, down to 48Mbps, to 16Mbps, to DS/1Mbps which is where it > seems to > idle. > > I've started looking at the output of wlanstats(1) and nothing jumps out > at me, > then again, I'm a noob so what do I know: > > [23:35:28] tyler:~ $ wlanstats > 8 rx frame too short > 30 rx from wrong bssid > 802156 rx discard 'cuz dup > 4 rx discard 'cuz mcast echo > 172272 rx beacon frames > 175177 rx element unknown > 996 rx frame chan mismatch > 61 rx seq# violation (TKIP) > 42 active scans started > 41 background scans started > 1072961 tkip crypto done in s/w > 405918 tkip tx MIC done in s/w > 667043 tkip rx MIC done in s/w > 173976 rx management frames > 667045 total data frames received > 663976 unicast data frames received > 3069 multicast data frames received > 406278 total data frames transmit > 405920 unicast data frames sent > 1M current transmit rate > 22 current rssi > -86 current noise floor (dBm) > -64 current signal (dBm) > > The only thing that looks removely suspicious is the "rx discard" segment, > but > again, I plead noob. > > > Any pointers would be useful and appreciated! > > - R. Tyler Croy > ------------------ > Code: https://github.com/rtyler > Chatter: https://twitter.com/agentdero > rtyler@jabber.org > >
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