===== Description =====

This page describes a Wi-Fi bandwidth performance test on a Lime2.

The Lime2 is equiped with the AR9271-based dongle from Olimex: [[https://www.olimex.com/Products/USB-Modules/MOD-WIFI-AR9271-ANT/|https://www.olimex.com/Products/USB-Modules/MOD-WIFI-AR9271-ANT/]]

Depending on which firmware is being used, the bandwidth changes drastically.

The following tests were done using iperf3 between a computer and the Lime2 using Wi-Fi.

Source: @HugoPo [[https://mastodon.xyz/web/statuses/104104780325391464]]

===== Lime2 as hotspot with AR9271 =====

=== Configuration ===

  * Firmware used: /lib/firmware/htc_9271.fw
  * Kernel module used : ath9k_htc

=== Results ===

  * AR9271 as sender 14.9 Mbits/sec
  * AR9271 as receiver 21.4 Mbits/sec


===== Lime2 as hotspot with AR9271 =====

Now with the other firmware, the non-free one provided my firmware-atheros package in Debian Stretch.

Huge impact on performance.

=== Configuration ===

  * Firmware used: firmware-atheros package (/lib/firmware/ath9k_htc/htc_9271-1.4.0.fw)
  * Kernel module used : ath9k_htc

=== Results ===
  * AR9271 as sender 36.9 Mbits/sec
  * AR9271 as receiver 28.8 Mbits/sec

30% improvement but still poor performance for 2020.