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Date: Thu, 31 May 2012 12:24:17 -0700
Message-ID: <CAJ-Vmok8oK6G1U2GR074n3QWJUr924WitP4Xn47wG6k95msfDA@mail.gmail.com> (sfid-20120531_212421_322148_42E333C0)
Subject: Re: Anyone doing WiFi throughput tests?
From: Adrian Chadd <adrian@freebsd.org>
To: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Cc: Ben Greear <greearb@candelatech.com>,
	"linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>,
	"ath9k-devel@lists.ath9k.org" <ath9k-devel@venema.h4ckr.net>
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Sender: linux-wireless-owner@vger.kernel.org

.. yup, I got it to 250MBit UDP. :-)

It turns out that (at least in FreeBSD-9), the scheduler and sleep
state behaviour when doing adaptive power save/sleep state (ie,
adaptive CPU speed changes, going into C2) is enough to negatively
impact my iperf and ath/net80211 taskqueue scheduling.

When I nail it back up to C1, fixed speed - everything is perfectly fine.

I'll go and do some further digging into this, but it's good to see
that I can squeeze decently high throughput out of the 2x2 NICs.


Adrian