Hi, I booted up a brand new 3.10.1 kernel with DFS support enabled and obviously in use. This AR9280 card is in AP mode on channel 40 (5GHz) with 802.11n/HT on (HT40-).
However, this boosts up latency to 50 - 90ms on average in pretty much idle mode (100KB/s traffic), spiking up to several hundred ms to one second at times. Maximum throughput is about 8 MBit/s with DFS, too. Turning DFS off yields 0.x to 1ms latency and about 45 MBit/s throughput. Is DFS still very experimental and that's the price for turning it on and constant scanning, or does it rather sound like a bug? Best regards, Mihai
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