Fwd: Re: Poor results of network perfomance with 5.2.1-p9.

From: Tec Meganet (tec_at_mega.net.br)
Date: 08/23/04

  • Next message: Infomatik: "Re: Poor results of network perfomance with 5.2.1-p9." 
    Date: Mon, 23 Aug 2004 14:12:00 -0300
To: freebsd-performance@freebsd.org

    ---------- Forwarded Message ----------

    Subject: Re: Poor results of network perfomance with 5.2.1-p9.
    Date: Monday 23 August 2004 14:10
    From: Infomatik <info@matik.com.br>
    To: Nikolay Pavlov <quetzal@roks.biz>, freebsd-performance@freebsd.org,
    freebsd-current@freebsd.org

    I am not so sure if your test is giving any usable result for FreeBSD.

    It seems you are using some wireless equipment between both servers what
     means that the throuput depends on this APs first.
    Any correctly cabled 10/100 NIC should give higher throughput than any
    available 802.11b network equipment.
    Even if you have a clean radio connection (> 25Db SNR on each side) between
    both APs, low(est) noise and a PP correctly configured you never get full
    duplex , one direction ever is slower. Also it depends on the distance
    between both points I believe.
    There are also several issues with the wireless equipments, may be you never
    get some usable cicles from an AP when it is highly used by another
    connection already.

    May be you first check your radio connection and before running a test
     between both server you check pinging the remote AP (even flooding) to see
     how capable your radio is. I guess you never get more than 1-1.5MB/s
    bi-directional between both servers. You may get sustained transfer rates of
    3-6MB/s in one direction only but I do not know this APs enough to say it
    exactly.

    If you need higher traffic you should use Tsunami WL-PP-bridges or
     802.11a/b/g cards configured as adhoc instead of this cheap APs connected to
     your NICs

    H

    On Monday 23 August 2004 06:55, Nikolay Pavlov wrote:
    > Hi, FreeBSD users.
    > I have made a smimple test of my network connection and have
    > received rather modest results of network perfomance. Here is my
    > test conditions:
    > ------------------------------
    >
    > |FreeBSD4.10-p2 CUSTOM kernel|
    > |LANRealTek100Mb/s |
    > |192.168.35.3 |
    >
    > ------------------------------
    > ------------------------------
    >
    > |D-Link DWL-900AP+ |
    > |Wireless11Mb/s |
    >
    > ------------------------------

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