Date: Wed, 7 Oct 2009 18:05:07 +0200 From: Hans Petter Selasky <hselasky@c2i.net> To: freebsd-current@freebsd.org Cc: Rui Paulo <rpaulo@gmail.com>, Ian FREISLICH <ianf@clue.co.za> Subject: Re: urtw(4) feedback. Message-ID: <200910071805.09153.hselasky@c2i.net> In-Reply-To: <E1MvYAM-0003Y7-Mo@clue.co.za> References: <F4DE5B21-FCF8-4B92-A5BA-E32553C935A3@gmail.com> <E1MvVXy-00031b-Mt@clue.co.za> <E1MvYAM-0003Y7-Mo@clue.co.za>
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On Wednesday 07 October 2009 17:10:58 Ian FREISLICH wrote: > Rui Paulo wrote: > > On 7 Oct 2009, at 13:23, Ian Freislich wrote: > > > urtw0: rtl8187b rf rtl8225z2 hwrev e > > > > > > Opening it up confirms the presence of a RTL8187B. > > > > > > However throughput is very poor, I haven't been able to get more > > > than about 130kB/s and pings seem to be timed every 1.5 seconds. > > > > This might help: > > http://p4db.freebsd.org/chv.cgi?CH=169276 > > Not significantly. The stability of the wireless association is > improved throughput is nearly doubled to 240kB/s, but there's some > wierdness: it responds to ping from "outside" almost immediately, > but when the host pings out, it spaces requests at about 1.6 seconds > (which it doesn't do on the alc0 interface). > > [mini] /usr/src/sys/modules/usb/urtw # time ping -c2 10.0.2.1 > PING 10.0.2.1 (10.0.2.1): 56 data bytes > 64 bytes from 10.0.2.1: icmp_seq=0 ttl=64 time=36.176 ms > 64 bytes from 10.0.2.1: icmp_seq=1 ttl=64 time=44.282 ms > > --- 10.0.2.1 ping statistics --- > 2 packets transmitted, 2 packets received, 0.0% packet loss > round-trip min/avg/max/stddev = 36.176/40.229/44.282/4.053 ms > > real 0m1.696s > user 0m0.000s > sys 0m0.001s > > It also takes about 10 seconds for the wlan0 interface to appear > after insertion. And if you use "ping -f" ? Could it be that it is only the last packet sent that is not flushed out? --HPS
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