samples: wifi: Optimize network buffer settings for improved throughput

Override default 4KB sizes of Tx and Rx data pools to achieve
better throughput.

Signed-off-by: Triveni Danda <[email protected]>

Author: D-Triveni

samples/wifi/shell/Kconfig

@@ -0,0 +1,31 @@
+#
+# Copyright (c) 2024 Nordic Semiconductor
+#
+# SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
+#
+
+menu "Nordic Shell sample"
+
+if NET_BUF_FIXED_DATA_SIZE
+
+config NET_BUF_DATA_SIZE
+	default 1100
+
+endif
+
+# Configure variable network buffer pool sizes for TX and RX
+if NET_BUF_VARIABLE_DATA_SIZE
+
+# nRF52 and nRF54 Series targets have less memory
+# so smaller pool sizes are recommended for these targets.
+config NET_PKT_BUF_TX_DATA_POOL_SIZE
+	default 50000 if !SOC_SERIES_NRF52X && !SOC_SERIES_NRF54LX && !SOC_SERIES_NRF54HX
+
+config NET_PKT_BUF_RX_DATA_POOL_SIZE
+	default 20000 if !SOC_SERIES_NRF52X && !SOC_SERIES_NRF54LX && !SOC_SERIES_NRF54HX
+
+endif
+
+source "Kconfig.zephyr"
+
+endmenu

samples/wifi/throughput/README.rst

@@ -297,15 +297,15 @@ The following table collects a summary of results obtained when throughput tests
 | Profile                | UDP TX    | UDP RX    | TCP TX    | TCP RX    |
 |                        |           |           |           |           |
 +========================+===========+===========+===========+===========+
-| IoT devices            | 5.08 Mbps | 5.43 Mbps | 5.25 Mbps | 3.35 Mbps |
+| IoT devices            | 5.7 Mbps  | 6 Mbps    | 7 Mbps    | 3.2 Mbps  |
 +------------------------+-----------+-----------+-----------+-----------+
-| Memory-optimized       | 5.1 Mbps  | 113 Kbps  | 644 Kbps  | 1.86 Mbps |
+| Memory-optimized       | 5.7 Mbps  | 4.2 Mbps  | 4.8 Mbps  | 6.2 Mbps  |
 +------------------------+-----------+-----------+-----------+-----------+
-| High performance       | 26.2 Mbps | 13.08 Mbps| 14.1 Mbps | 7.76 Mbps |
+| High performance       | 16.5 Mbps | 16.3 Mbps | 9.5 Mbps  | 10.6 Mbps |
 +------------------------+-----------+-----------+-----------+-----------+
-| TX prioritized         | 26.3 Mbps | 12.20 Mbps| 10.5 Mbps | 4.5 Mbps  |
+| TX prioritized         | 16.6 Mbps | 13.4 Mbps | 8.5 Mbps  | 6.6 Mbps  |
 +------------------------+-----------+-----------+-----------+-----------+
-| RX prioritized         | 9.34 Mbps | 13.46 Mbps| 5.48 Mbps | 7.92 Mbps |
+| RX prioritized         | 8.6 Mbps  | 17.9 Mbps | 6.2 Mbps  | 7.7 Mbps  |
 +------------------------+-----------+-----------+-----------+-----------+
 
 .. note::

samples/wifi/throughput/overlay-high-performance.conf

@@ -16,3 +16,6 @@ CONFIG_NET_SOCKETS_POLL_MAX=20
 CONFIG_MAIN_STACK_SIZE=5200
 CONFIG_SHELL_STACK_SIZE=5200
 CONFIG_NET_MGMT_EVENT_STACK_SIZE=4600
+
+CONFIG_NET_PKT_BUF_TX_DATA_POOL_SIZE=45000
+CONFIG_NET_PKT_BUF_RX_DATA_POOL_SIZE=25000

samples/wifi/throughput/overlay-iot-devices.conf

@@ -17,3 +17,6 @@ CONFIG_NET_SOCKETS_POLL_MAX=20
 CONFIG_MAIN_STACK_SIZE=5200
 CONFIG_SHELL_STACK_SIZE=5200
 CONFIG_NET_MGMT_EVENT_STACK_SIZE=4600
+
+CONFIG_NET_PKT_BUF_TX_DATA_POOL_SIZE=15000
+CONFIG_NET_PKT_BUF_RX_DATA_POOL_SIZE=60000

samples/wifi/throughput/overlay-memory-optimized.conf

@@ -17,3 +17,6 @@ CONFIG_NET_SOCKETS_POLL_MAX=20
 CONFIG_MAIN_STACK_SIZE=5200
 CONFIG_SHELL_STACK_SIZE=5200
 CONFIG_NET_MGMT_EVENT_STACK_SIZE=4600
+
+CONFIG_NET_PKT_BUF_TX_DATA_POOL_SIZE=8192
+CONFIG_NET_PKT_BUF_RX_DATA_POOL_SIZE=8192

samples/wifi/throughput/overlay-rx-prio.conf

@@ -17,3 +17,6 @@ CONFIG_NET_SOCKETS_POLL_MAX=20
 CONFIG_MAIN_STACK_SIZE=5200
 CONFIG_SHELL_STACK_SIZE=5200
 CONFIG_NET_MGMT_EVENT_STACK_SIZE=4600
+
+CONFIG_NET_PKT_BUF_TX_DATA_POOL_SIZE=12000
+CONFIG_NET_PKT_BUF_RX_DATA_POOL_SIZE=18000

samples/wifi/throughput/overlay-tx-prio.conf

@@ -17,3 +17,6 @@ CONFIG_NET_SOCKETS_POLL_MAX=20
 CONFIG_MAIN_STACK_SIZE=5200
 CONFIG_SHELL_STACK_SIZE=5200
 CONFIG_NET_MGMT_EVENT_STACK_SIZE=4600
+
+CONFIG_NET_PKT_BUF_TX_DATA_POOL_SIZE=25000
+CONFIG_NET_PKT_BUF_RX_DATA_POOL_SIZE=15000