Question about ath10k throughput

Michal Kazior michal.kazior at
Tue Apr 21 22:03:59 PDT 2015

On 21 April 2015 at 23:28, Shu, Nick <Nick.Shu at> wrote:
> Hi, Group:
> I'm doing throughout measurement on QCA9880 chip, running ath10k 3.17 driver with firmware.
> I'm able to set channel width to 80MHz, enabled all three streams, MCS index to 9 for max. data throughput.
> I verified all initial setting are correct.
> But when test starts, MCS dropped (as the results of packet error?).

> Is there any app command to send to driver to lock the MCS index during the test, so we can see better throughput?

You can try:

  iw wlan0 set bitrates legacy-5 ht-mcs-5 vht-mcs-5 3:9

To reset:

  iw wlan0 set bitrates

> What is the best practical number we can get for ath10k chip? 800? 900?

On a cabled RF with attenuators I remember seeing ~900mbps of UDP
between two QCA988Xs and ~650mbps of UDP between QCA988X and QCA6174,


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