Poor results of network perfomance with 5.2.1-p9.

Infomatik info at matik.com.br
Mon Aug 23 10:11:12 PDT 2004

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 

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


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 	     |
> 		|		     |
> 		------------------------------
> 		------------------------------
> 		|D-Link DWL-900AP+	     |
> 		|Wireless11Mb/s		     |
> 		------------------------------

More information about the freebsd-performance mailing list