autotest: Use AMPDU exponent of 7 in VHT80 perf test
In network_WiFi_Perf.vht80, the Gale router is defaulting to an AMPDU
exponent length of 0, which is causing throughput much much lower than
expectations for tcp_tx and udp_tx modes on devices with Intel WiFi.
This CL manually forces the router to use an AMPDU exponent length of
7, which will allow higher throughput results.
BUG=b:179524976,b:172219604
TEST=test_that ${DUT} network_WiFi_Perf.vht80
Results Mbps (looking at ch44 with PSon):
Hatch device (Intel WiFi):
Before: tcp_rx:135.61, tcp_tx:112.00, udp_rx:311.78, udp_tx: 151.03
After: tcp_rx:136.09, tcp_tx:258.87, udp_rx:344.72, udp_tx: 385.47
Zork device (Realtek WiFi):
Before: tcp_rx:135.65, tcp_tx:252.72, udp_rx:367.65, udp_tx: 391.81
After: tcp_rx:145.44, tcp_tx:249.26, udp_rx:379.11, udp_tx: 393.13
Change-Id: Ie352b0d133d896132d133d3fa084f112a16c42e9
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/autotest/+/2708088
Commit-Queue: Kevin Lund <kglund@google.com>
Tested-by: Kevin Lund <kglund@google.com>
Reviewed-by: Nicolas Norvez <norvez@chromium.org>
(cherry picked from commit 1508d288796541479dbf9a6c3a6351d1c2150013)
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/autotest/+/2724412
Reviewed-by: Harpreet Grewal <harpreet@chromium.org>
Reviewed-by: Aashutosh Kalyankar <aashutoshk@chromium.org>
Commit-Queue: Aashutosh Kalyankar <aashutoshk@chromium.org>
Tested-by: Aashutosh Kalyankar <aashutoshk@chromium.org>
diff --git a/server/site_tests/network_WiFi_Perf/control.vht80 b/server/site_tests/network_WiFi_Perf/control.vht80
index e5773a7..72f89fa 100644
--- a/server/site_tests/network_WiFi_Perf/control.vht80
+++ b/server/site_tests/network_WiFi_Perf/control.vht80
@@ -21,7 +21,8 @@
def run(machine):
n_caps = [hostap_config.HostapConfig.N_CAPABILITY_HT40_PLUS]
- ac_caps = [hostap_config.HostapConfig.AC_CAPABILITY_SHORT_GI_80]
+ ac_caps = [hostap_config.HostapConfig.AC_CAPABILITY_SHORT_GI_80,
+ hostap_config.HostapConfig.AC_CAPABILITY_MAX_A_MPDU_LEN_EXP7]
ac_mode = hostap_config.HostapConfig.MODE_11AC_MIXED
channel_width_80_mhz = hostap_config.HostapConfig.VHT_CHANNEL_WIDTH_80
configs = [hostap_config.HostapConfig(
