Hi, > i am trying to promote open source mac against > our proprietary mac in my organization , There's no opensource MAC, except the Broadcom open firmware. Are you referring to mac80211? It's not really the MAC, it's more the MLME and some parts of the MAC. The boundaries aren't really exactly implemented as specified. If you were actually asking about the MAC itself, you can stop reading here, and tell everyone that there is no open source MAC. It's not really possible either since all hardware is different and this tends to be implemented close to or even in the hardware. If you're asking about the host wireless stack, read on. > i want to make few slides > regarding the throughput and performance related comparison.Has any > one did any performance related study of open mac ? if not then i am > planning to take this activity , i will measure maximum throughput > achieve the MIPS per mbps ,if any one want to know any other > particular point then let me know i will measure that and publisize > the results. I'm not aware of any speed comparison, especially obviously not compared to your own implementation of the wireless stack. However, this question is also quite irrelevant. By using your own 802.11 stack, you will * not get your driver into the kernel, which means having to maintain the driver forever out of the tree * not be able to take advantage of future performance work other companies will do on the open source component Therefore, the question doesn't make sense -- performance shouldn't be a criterion since that will be improved. Trying to write a faster stack might be possible, initially, but at some point you will need to catch up with features, performance, of both, of the open source wireless stack. At the same time, a lot of power consumption optimisation work is going into the open source stack, something which you would have to duplicate too, eventually. In my opinion, asking for performance review to base such a decision on is rather shortsighted. It might make sense to do such a review, and then decide to improve the open source stack, so you get the best of both worlds, but doing such a review and then deciding against it would be painting yourself into a corner you will never get out of again without significantly more effort. I would suggest to start by getting your priorities right. Using the open source stack will allow you to get a driver for Linux out easier, will mean the community will be impressed, rather than annoyed, by you, and finally will allow you to take advantage of future enhancements and new standard amendments easily. Bonus points for improving the open source stack where you think it's necessary. johannes
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