Wireless Preformance less on Linux than Win98
david at gibson.dropbear.id.au
Sun Mar 7 23:51:50 GMT 2004
On Sun, Mar 07, 2004 at 04:37:10PM -0700, Craig Bell wrote:
> I've got a dual booted Athlon 550, running Win98 and SuSE 8.1. My eth0
> connection is a Netgear MA-311. The wireless lan on both systems works fine,
> but Konquerer is much slower on the SuSE to load pages, etc, than IE on the
> windows side.
> The Netgear Configuration GUI on Windows shows that my Link Quality is around
> 90%, and the Signal Level a little less. When I compare that to iwconfig
> under linux I get much less, about 64/92:
> eth0 IEEE 802.11-DS ESSID:"ourwirelesslan" Nickname:"Prism I"
> Mode:Managed Frequency:2.462GHz Access Point: 00:30:AB:17:54:E2
> Bit Rate:11Mb/s Tx-Power=15 dBm Sensitivity:1/3
> Retry min limit:8 RTS thr:off Fragment thr:off
> Power Management:off
> Link Quality:64/92 Signal level:-51 dBm Noise level:-149 dBm
> Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
> Tx excessive retries:0 Invalid misc:0 Missed beacon:0
> I'm running the orinoco-0.13e driver on Linux, and the netgear supplied driver
> on windows.
> I've spent the afternoon trying to find what I can on the web about tuning
> wireless performance, but aside from being in over my head on most of it, I
> haven't seen anything that directly compares how to get the link quality up
> or why it would be less on SuSE than on Windows in the same box in the same
> room. I would sure appreciate some kind help to increase my throughput, or
> at least some easier to read doc on the subject of performance.
> Is there any chance that I'm barking up the wrong tree, and that it's not in
> the wireless config at all? Can the lower link quality from iwconfig be
> explained some other way?
I don't really know how to properly interpret the signal level values
that the firmware returns. So the signal level reported by iwconfig
is quite possibly bogus, or at least on a different scale to that
reported by Windows (it also seems to be reported slightly differently
for different firmware versions, which makes life tricky).
Now if you had a markedly different measured throughput, that would be
David Gibson | For every complex problem there is a
david AT gibson.dropbear.id.au | solution which is simple, neat and
More information about the wireless