Date: Tue, 24 Aug 2004 10:04:04 +0300 From: Nikolay Pavlov <quetzal@roks.biz> To: Infomatik <info@matik.com.br> Cc: freebsd-current@freebsd.org Subject: Re: Poor results of network perfomance with 5.2.1-p9. Message-ID: <20040824070404.GA218@roks.biz> In-Reply-To: <200408231410.36111.info@matik.com.br> References: <20040823095502.GA757@roks.biz> <200408231410.36111.info@matik.com.br>
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Hi, FreeBSD users. On Monday, 23 August 2004 at 14:10:36 -0300, Infomatik wrote: > 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 You are right. This damned chinese AP again and again let down me. I have found a huge amount of drops on send queue in 5.2.1 side. When I have drop speed down to 2 Mb/s on both AP results of test were leveled on a mark 1.35 Mb/s. Sorry for that noise and thank's for your time. Best regards, Nikolay Pavlov.
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