OSEC

Neohapsis is currently accepting applications for employment. For more information, please visit our website www.neohapsis.com or email hr@neohapsis.com
 
From: Jamin W.Collins (jcollins_at_asgardsrealm.net)
Date: Wed Jul 31 2002 - 20:16:05 CDT

  • Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

    I've had a working wireless lan with a DWL-1000AP and two DWL-650 pcmcia
    cards for a while now. However rather recently, I've noticed very poor
    performance from the wireless cards, even when within a few feet of the
    AP. I'm hoping that someone here might be able to help me isolate and/or
    understand what's happening.

    The majority of my home wired network is switched, and has a normal
    latency from any given system to another of ~0.2ms on the wire. However
    with the wireless card I'm experiencing latencies of ~6ms to start with
    and then they spike to the mid 3000-4000ms range (this appears to be when
    there's any kind of transfer other than pings occuring).

    When doing periodic updates of the Debian available package listings from
    my local mirror, I'm lucky to get 7000B/s. So, updating the list of
    available packages literally takes minutes to complete. Such as this
    update that was done approximately 4 feet from the AP:

      Fetched 5107kB in 12m32s (6784B/s)

    While a similiar update from the same server on the wired side is:

      Fetched 5707kB in 3s (1430kB/s)

    I realize that wireless connections are slower than wired connections and
    expect them to be so, but this seem out of the ordinary to me.

    My main laptop is running Debian testing (aka sarge) with a 2.4.18 kernel.
     I'm using the stock orinoco_cs driver with the kernel for the DWL-650
    card (which appears to be 0.09b).

    I'm happy to provide more information, I'm just not sure what would be
    useful.

    -- 
    Jamin W. Collins