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From: Mihai Moldovan <ionic@ionic.de>
To: ath9k-devel@lists.ath9k.org
Subject: [ath9k-devel] AR9280 DFS -- high latency
Date: Mon, 15 Jul 2013 05:29:30 +0200	[thread overview]
Message-ID: <51E36C9A.1060200@ionic.de> (raw)

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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             reply	other threads:[~2013-07-15  3:29 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-07-15  3:29 Mihai Moldovan [this message]
2013-08-16 15:59 ` [ath9k-devel] AR9280 DFS -- high latency Bruno Alexandre Taraio dos Santos Antunes
2013-08-19 13:36   ` Mihai Moldovan
2013-08-19 15:25     ` Adrian Chadd
2013-08-19 21:34       ` Mihai Moldovan

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