We are using the Archer C7 v2 routers (ar71xx) with the ath10k-ct drivers. All of these numbers are while the respective pieces are under load (using iperf).

Currently, the usage on the ath10k-ct drivers we seem to see stay within approx 20-30 MB of RAM usage. The kernel seems to take approx 20MB. Then we have some other things that are taking approx 30 MB.

However, as soon as I connect to the 2GHz (ath9k) channel while monitoring the RAM usage, the routers gets within 4 MB of available memory, and things start crashing until the router reboots.
Can someone explain:
1) why does the ath9k drivers consume what appears to be 60MB+ or RAM?
2) is there some way to set the top-end limit of how much it can use?

Thanks!
Spencer

(Last edited by slthomason on 5 Sep 2017, 23:04)

This sounds like a bug.  Have you tried later versions?  You should try LEDE anyway as it includes most of the "make wifi fast" improvements to ath9k that have been added after CC was released.