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From: Hans Petter Selasky <hselasky@c2i.net>
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Date: Wed, 7 Oct 2009 18:05:07 +0200
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Cc: Rui Paulo <rpaulo@gmail.com>, Ian FREISLICH <ianf@clue.co.za>
Subject: Re: urtw(4) feedback.
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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