diff --git a/examples/ethernet/iperf/sdkconfig.defaults b/examples/ethernet/iperf/sdkconfig.defaults
index ac3bc061a4..32244d0301 100644
--- a/examples/ethernet/iperf/sdkconfig.defaults
+++ b/examples/ethernet/iperf/sdkconfig.defaults
@@ -24,6 +24,8 @@ CONFIG_FREERTOS_USE_STATS_FORMATTING_FUNCTIONS=y
 
 # Run FreeRTOS only on the first core
 CONFIG_FREERTOS_UNICORE=y
+# Enable FreeRTOS IRAM optimization
+CONFIG_FREERTOS_IN_IRAM=y
 
 # Disable watch dog
 CONFIG_ESP_INT_WDT=n
diff --git a/examples/wifi/.build-test-rules.yml b/examples/wifi/.build-test-rules.yml
index 229dc51e25..3688fe70b2 100644
--- a/examples/wifi/.build-test-rules.yml
+++ b/examples/wifi/.build-test-rules.yml
@@ -64,6 +64,13 @@ examples/wifi/iperf:
     - lwip
     - esp_coex
     - wpa_supplicant
+  depends_components-:
+    # remove these components from "*common_components"
+    # because they have minimal impact on performance test results
+    - esp_common
+    - cxx
+    - log
+
 
 examples/wifi/itwt:
   <<: *wifi_depends_default
diff --git a/examples/wifi/iperf/sdkconfig.defaults b/examples/wifi/iperf/sdkconfig.defaults
index 6296ca9331..e16dfaf25e 100644
--- a/examples/wifi/iperf/sdkconfig.defaults
+++ b/examples/wifi/iperf/sdkconfig.defaults
@@ -2,6 +2,7 @@ CONFIG_ESP_SYSTEM_EVENT_TASK_STACK_SIZE=4096
 
 CONFIG_FREERTOS_UNICORE=n
 CONFIG_FREERTOS_HZ=1000
+CONFIG_FREERTOS_IN_IRAM=y
 
 CONFIG_ESP_INT_WDT=n
 CONFIG_ESP_TASK_WDT_EN=n