Re: [Madwifi-users] Cross compilation error
Status: Beta
Brought to you by:
otaku
From: Oran B. <ora...@gm...> - 2008-03-30 15:29:36
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Hi All, I've been testing the Madwifi driver for some time in Adhoc (IBSS) and AP / Sta modes. For my latest tests I used the trunk version (rev 3408). I have DLink cards using a 5212 chipset. I did numerous throughput tests and found out that Adhoc will always give lower throughput than Ap / Sta mode. In order to understand this issue I: 1. Fixed the rate (54 Mbits for example) to avoid the rate module. 2. Disabled AP background scanning. 3. Disabled any driver / hardware optimization (AR, XR, Turbo, FF, Burst, Compression). 4. Used a fixed channel that is clear (can't hear any other Sta / AP's) 5. Used a simple setup of 2 PC's connecting to each other. The difference after all this is about 30% (16-17 Mbits in Adhoc mode vs. 20-21 Mbits in AP / Sta mode). I looked in the protocol specification and I can't see a reason for this performance issue. Can someone explain this situation? Is it protocol related, implementation related or a bug? I am willing to test the driver with other options / patches to see if it makes a difference. Thanks for your time, Oran. |