Re: Broadcom hybrid_wl driver
On Sun, 2008-10-26 at 20:09 +0100, Andreas Thienemann wrote:
On Sun, 26 Oct 2008, Jarod Wilson wrote:
> Okay, so back to the Linux side and the hybrid_wl driver... I get no
> better than ~350KB/s. I presume the driver isn't handling the
> single-antenna very well or something [...]
This might be an antenna diversity issue, but I do not think this is
likely if you haven't toggled anything in the driver.
Ping some host on your network, if you're experiencing about 50% packet
loss, you're system is using transmit diversity alternating between each
antenna.
No packet loss pinging other hosts, or w/other hosts pinging it.
Possibly of note: when pinging out from the host itself, I get fairly
consistent ping times, ranging from sub-millisecond to ~4ms. Pinging
*to* the host, I see wildly varying round-trip times, ranging from
sub-millisecond to 120ms.
If this is not the case, you're not using diversity at all or
just
receiver diversity.
If the connection is miserable in general (snr or signal strength) you
might have swapped the aux and the main antenna.
Don't think that's the case, since under Mac OS X with the exact same
hardware setup, I get about 12x the throughput.
The wlan driver usually offers a toggle to switch diversity on and
off,
usually through some sysctl or /sys interface.
Nothing in /sys that I can see on brief inspection, haven't looked at
the code itself yet.
The way you're describing your issue though, it sounds as if the
driver is
just crap...
That seems the most likely to me thus far... :)
ndiswrapper testing Coming Soon...
--
Jarod Wilson
jarod(a)wilsonet.com