Messages in this thread | | | Date | Fri, 14 Dec 2007 18:27:58 -0800 | From | Larry Finger <> | Subject | Re: [PATCH 3/3] net: wireless: bcm43xx: big_buffer_sem semaphore to mutex |
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mvtodevnull@gmail.com wrote: > > Could this be the reason my BCM94311MCG rev 1 receives such terrible > performance with b43 but works well with bcm43xx? The device is > 802.11b/g but my router is 802.11b. I filed a report on this issue > here: https://bugzilla.redhat.com/show_bug.cgi?id=413291
No. On my BCM4311/1, my transfer rate peaked at about 12 Mbs with bcm43xx, but increased to 20 Mbs with b43. These tests were done with iperf with a server running running on a second computer connected by wire to my router. These rates are for 802.11g. When my interface was locked at 11 Mbs, the transfer rate was the expected 5.3-5.5 Mbs with both drivers.
> I was told by Michael that I would have to fix it myself, and I am > trying, but the learning curve is a little steep. If this is relevant, > I might at least have some direction to go in.
I suspect that mac80211 is doing something that your router does not like. Do you have any chance to capture the traffic between your computer and the router by using a second wireless computer running kismet or wireshark? A look at the differences between b43 and bcm43xx should show the reason.
Larry
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