On 2011-04-05 6:03 PM, Serene Gud wrote:
> > On 2011-04-05 5:44 PM, Bernhard Walle wrote: > > Hello, > > > > we're using a PCIe AR9280 card on a Octeon MIPS CPU. The system > > that does the transmission has a high CPU utilization: > > > > iperf in UDP mode with 50M bandwith has ~90 % CPU utilization with a > > high softirq proportion. > > > > Using an Intel card (5300) has a lower CPU utilization (~60 %), > but it's > > no option to use it because the Linux driver has no access point > mode. > > > > Are there any tweaks to decrease the CPU utilization with the ath9k > > driver? Any recommendations for the application to send the network > > packets more efficient? > What kernel version are you using? Are you using the in-kernel ath9k or > are you using compat-wireless? I have added quite a few performance > optimizations over time, as I'm working with much slower MIPS CPUs than > the octeon. > In my tests, a 300 MHz MIPS 24K CPU is good enough for handling around > 90 mbit/s of traffic with only around 70% CPU utilization. > > - Felix > > > Now thats interesting Felix :) , how have you managed to get all these? What do you mean with 'get all these'? - Felix Sorry, I am new to these things; what I wanted to ask you was that with the kind of CPU info that you have; how were you able to get 90 mbit/s of traffic. I am using a much faster CPU with 1.66 Ghz 512K still I usually get 65mbit/s. I am using in-kernel ath9K. Are you using compat-wireless? Are there any other changes that you have made to your system? I have no idea if we can make the tx bitrate stable? If you have done that, kindly share. Thanks! SGS
_______________________________________________ ath9k-devel mailing list ath9k-devel@lists.ath9k.org https://lists.ath9k.org/mailman/listinfo/ath9k-devel
