Add tcp latency test over virtio-net

test/benchmark/lmbench/tcp_virtio_lat/config.json

@@ -0,0 +1,9 @@
+{
+    "alert_threshold": "125%",
+    "alert_tool": "customSmallerIsBetter",
+    "search_pattern": "TCP latency using 127.0.0.1:",
+    "result_index": "5",
+    "description": "lat_tcp_virtio",
+    "title": "[TCP sockets] The latency over virtio-net",
+    "benchmark_type": "host_guest"
+}

test/benchmark/lmbench/tcp_virtio_lat/host.sh

@@ -0,0 +1,21 @@
+#!/bin/sh
+
+# SPDX-License-Identifier: MPL-2.0
+
+set -e
+
+# Function to stop the guest VM
+stop_guest() {
+    echo "Stopping guest VM..."
+    # `-r` means if there's no qemu, the kill won't be executed
+    pgrep qemu | xargs -r kill
+}
+
+# Trap EXIT signal to ensure guest VM is stopped on script exit
+trap stop_guest EXIT
+
+# Run lmbench tcp client
+echo "Running lmbench tcp client"
+/usr/local/benchmark/lmbench/lat_tcp -P 1 127.0.0.1
+
+# The trap will automatically stop the guest VM when the script exits

test/benchmark/lmbench/tcp_virtio_lat/result_template.json

@@ -0,0 +1,14 @@
+[
+    {
+        "name": "Average TCP latency over virtio-net on Linux",
+        "unit": "µs",
+        "value": 0,
+        "extra": "linux_result"
+    },
+    {
+        "name": "Average TCP latency over virtio-net on Asterinas",
+        "unit": "µs",
+        "value": 0,
+        "extra": "aster_result"
+    }
+]

test/benchmark/lmbench/tcp_virtio_lat/run.sh

@@ -0,0 +1,13 @@
+#!/bin/sh
+
+# SPDX-License-Identifier: MPL-2.0
+
+set -e
+
+echo "Running lmbench TCP latency over virtio-net..."
+
+# Start the server
+/benchmark/bin/lmbench/lat_tcp -s 10.0.2.15
+
+# Sleep for a long time to ensure VM won't exit
+sleep 200