Poor WiFi Performance

Phil Bieber philbieber at gmail.com
Tue Jan 27 15:34:02 UTC 2009


On Sun, Jan 25, 2009 at 22:40, Nifty Fedora Mitch
<niftyfedora at niftyegg.com> wrote:
> On Sun, Jan 25, 2009 at 07:57:26PM +0100, Phil Bieber wrote:
<--snip
> What MTU is being used?  With ADSL try 1492.
snip-->

Hi!
I checked the  MTU and it says 1500, I changed it and now the speed
test is better than the last time (~700kbit/s up, 700kbit/s down). But
still they are not the same or close to the Windows speeds....

Here's the output from iwconfig and ifconfig before changing the MTU.:

[phil at hekate ~]$ ifconfig wlan0
wlan0     Link encap:Ethernet  HWaddr 00:19:D2:3C:A0:43
          inet addr:192.168.0.49  Bcast:192.168.0.255  Mask:255.255.255.0
          inet6 addr: fe80::219:d2ff:fe3c:a043/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:15 errors:0 dropped:0 overruns:0 frame:0
          TX packets:23 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:2193 (2.1 KiB)  TX bytes:5445 (5.3 KiB)

[phil at hekate ~]$ iwconfig wlan0
wlan0     IEEE 802.11abg  ESSID:"bieberdamm_og"
          Mode:Managed  Frequency:2.437 GHz  Access Point: 00:0F:B5:0F:3B:33
          Bit Rate=54 Mb/s   Tx-Power=15 dBm
          Retry min limit:7   RTS thr:off   Fragment thr=2352 B
          Power Management:off
          Link Quality=81/100  Signal level:-53 dBm  Noise level=-127 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

<-- snip
> Watch out for network zeroconfig configuration setting up unexpected links too.
snip-->

How can I check this? I haven't seen a service of that name or any
process ... I do know its the protocol for setting up router / server
less networks, but I have to admit that I have yet to use it.

By the way: something caught my eye when I looked at that output:
Whenever I have the bad performance, my connection strentrgh
(according to NM-applet) dropes to ~50%. I don't know if this is
relevant or not, but I thought, I'd mention it.

Thank you very much for your help!

Cheers
Phil Bieber
--
Monday is an awful way to spend 1/7th of your life.

Atheism is a non-prophet organization.

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Philipp Bieber - philbieber at gmail.com




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