Hi, Probably depends on what you want to see. It is very hard to get any real hard data on throughput because it very much depends on what point of the 'food ladder' that you do the measurement - hardware or applications or any point in-between.
We spent a lot of time trying to get consistent numbers, and now we use a rule of thump that the throughput will be about 50% of the rated bandwidth. This give about 5.5Mbps for 802.11b and about 25 Mbps for 802.11g We did tests with only two units switched on, in a remote area with positively no other radios within about 50 miles and had trouble getting consistent results. I suppose the fact that the waves reflect off just about anything, and can cause destructive as well as constructive doesn't help. We concluded that you would have to be in an isochonic chamber with radio absorbing material everywhere to get a consistent figure, but what good would that be in a real deployment situation. The best, and most repeatable test that we used was copying files over the Microsoft LAN layer. Simple to do, and much more repeatable than programs that we wrote in C, C# ... Also, needless to say, using large files helped a lot. We used a standard 20MB file for final testing over a link. Oliver Leamy Ogenek Teoranta, Ballingeary, Macroom County Cork +353 (26) 47808 ; +353 (86) 8337664 -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of David Berndt Sent: 28 June 2003 18:29 To: [EMAIL PROTECTED] Subject: Re: [smartBridges] What throughput should I see This doesn't seem right but I dont really know why they are so low. Are you pinging the actual radios themselves? Has anyone else done this sort of test before? Is is possible the radios arent capable of responding to so much data addressed to themselves and you'd get a more realistic throughput if you put a pc at the other end and tested against that? Dave At 12:58 PM 28/06/2003 +0100, you wrote: >Using Ws_Ping ProPack >With max packet size set to my MTU (1458) > >PC to Airbridge gives 11.3Mb >PC to Ap - at 1.2 miles RSSI 60% Link Qual 80% gives 1.3Mb > >A test setup with AppoTotal set as AP on desktop - with no Ethernet >connection - >RSSI 100% Link Qual 95% shows only 1.6Mb > > The PART-15.ORG smartBridges Discussion List To Join: mailto:[EMAIL PROTECTED] (in the body type subscribe smartBridges <yournickname> To Remove: mailto:[EMAIL PROTECTED] (in the body type unsubscribe smartBridges) Archives: http://archives.part-15.org The PART-15.ORG smartBridges Discussion List To Join: mailto:[EMAIL PROTECTED] (in the body type subscribe smartBridges <yournickname> To Remove: mailto:[EMAIL PROTECTED] (in the body type unsubscribe smartBridges) Archives: http://archives.part-15.org
