Date: Fri, 03 Mar 2017 09:17:45 +0200 From: "Andriy Voskoboinyk" <avos@freebsd.org> To: =?utf-8?Q?Otac=C3=ADlio?= <otacilio.neto@bsd.com.br> Cc: "freebsd-wireless@freebsd.org" <freebsd-wireless@freebsd.org> Subject: Re: Low performance on rtwn_usb Message-ID: <op.ywijvv2g4dikkl@thinkpad-x220> In-Reply-To: <op.ywii04ub4dikkl@thinkpad-x220> References: <38d16a0b-f60c-4303-f167-9d7ae0e876d7@bsd.com.br> <op.ywii04ub4dikkl@thinkpad-x220>
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Fri, 03 Mar 2017 08:59:18 +0200 =D0=B1=D1=83=D0=BB=D0=BE =D0=BD=D0=B0=D0= =BF=D0=B8=D1=81=D0=B0=D0=BD=D0=BE Andriy Voskoboinyk = <avos@freebsd.org>: > Fri, 03 Mar 2017 04:25:03 +0200 =D0=B1=D1=83=D0=BB=D0=BE =D0=BD=D0=B0=D0= =BF=D0=B8=D1=81=D0=B0=D0=BD=D0=BE Otac=C3=ADlio = > <otacilio.neto@bsd.com.br>: > >> > ieee80211_load_module: load the wlan_amrr module by hand for now. > > Without wlan_amrr module default rate will be set to some fixed value > (1 MBps for 11g, 6 MBps for 11a) (can be modified via > ucastrate / mcastrate / mgtrate ifconfig(8) parameters). > > For now, there are only 2 possibilites: > 1) Kldload / add wlan_amrr to kld_list & use wlan_amrr for automatic > rate adaptation (current activity can be seen via > 'wlandebug -i wlan0 rate') > 2) Set the rate manually via ifconfig(8) (disables automatic rate > adaptation; use 'ifconfig wlan0 *rate -' to return to it). 3) (for rtwn(4) only) Set dev.rtwn.%d.ratectl tunable to 0 - then driver will use MCS4 for 11n, OFDM 36 for 11g/11a and CCK5.5 for 11b (hardcoded, still may be overridden via ifconfig(8)) >> Dears >> >> I'm using a USB wifi dongle to connect my baglebone black. This dongl= e = >> uses the driver rtwn/rtwn_usb. >> >> This driver exhibits a very low performance on both, beaglebone and a= = >> Intel Core 2 Duo notebook. With -ht and without -ht on the ficonfig t= he = >> performance is something like this: >> >> root@beaglebone:/usr/home/ota # netperf -H nostromo >> MIGRATED TCP STREAM TEST from 0.0.0.0 () port 0 AF_INET to nostromo (= ) = >> port 0 AF_INET : histogram : interval : dirty data : demo >> Recv Send Send >> Socket Socket Message Elapsed >> Size Size Size Time Throughput >> bytes bytes bytes secs. 10^6bits/sec >> >> 65536 32768 32768 10.91 0.49 >> >> The dongle is this >> >> ugen1.2: <vendor 0x0bda product 0x8176> at usbus1 >> rtwn0 on uhub1 >> rtwn0: <vendor 0x0bda product 0x8176, class 0/0, rev 2.00/2.00, addr = 2> = >> on usbus1 >> rtwn0: MAC/BB RTL8188CUS, RF 6052 1T1R >> ieee80211_load_module: load the wlan_amrr module by hand for now. >> wlan0: Ethernet address: 80:3f:5d:11:28:e6 >> >> Someone can give me a hint to enhance performance? Previously, with = >> urtw the throughput was about MBPs. >> >> []'s >> >> -Otacilio >> >> _______________________________________________ >> freebsd-wireless@freebsd.org mailing list >> https://lists.freebsd.org/mailman/listinfo/freebsd-wireless >> To unsubscribe, send any mail to = >> "freebsd-wireless-unsubscribe@freebsd.org"
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