Cannot achieve throughput higher than 460Mbps using CT firmware and 3x3 ath10k

[Pushpal Sidhu]

On Wed, May 6, 2015 at 8:01 AM, richard mayers
<richard.mayers92 at gmail.com> wrote:
> Hi all,
>
> The maximum throughput I get with the following set up is around
> 460-470Mbits/s when using MCS 6, 80MHz channel and 3 spatial streams.
> However, when I try MCS 7, the throughput drops to 200Mbits/s, and
> when I use 8 or 9 it goes to 0. The signal level is -11dBm which I
> guess is quite good.
>
> Do you have any indications of what I do wrong and cannot get 600Mbps
> throughput, as mention in previous messages in this list? Any help is
> highly appreciated.
>
> My set up is as follows:
>
> - STA: compex wle900vx (QCA988x), ubuntu 14.04 LTS, dell dual core
> 1.66ghz, kernel version 3.16, driver backport 4.0.1 and as a firmware
> the commercial firmware from Candela Tech (
> 10.4.467-ct-com-full-013-b5b14a).

Honestly, I think it's your CPU. Run top while doing your throughput
test, and I think you'll see 100% sirq (pegged CPU core). Also make
sure you split the CPU's up so you're not looking at the 'total' cpu
count.

- Pushpal