Add tcp latency test over virtio-net

test/benchmark/bench_linux_and_aster.sh

@@ -70,7 +70,7 @@ run_benchmark() {
         -drive if=none,format=raw,id=x0,file=${BENCHMARK_DIR}/../build/ext2.img \
         -device virtio-blk-pci,bus=pcie.0,addr=0x6,drive=x0,serial=vext2,disable-legacy=on,disable-modern=off,queue-size=64,num-queues=1,config-wce=off,request-merging=off,write-cache=off,backend_defaults=off,discard=off,event_idx=off,indirect_desc=off,ioeventfd=off,queue_reset=off \
         -append 'console=ttyS0 rdinit=/benchmark/common/bench_runner.sh ${benchmark} linux mitigations=off hugepages=0 transparent_hugepage=never quiet' \
-        -netdev user,id=net01,hostfwd=tcp::5201-:5201,hostfwd=tcp::8080-:8080 \
+        -netdev user,id=net01,hostfwd=tcp::5201-:5201,hostfwd=tcp::8080-:8080,hostfwd=tcp::31234-:31234 \
         -device virtio-net-pci,netdev=net01,disable-legacy=on,disable-modern=off \
         -nographic \
         2>&1"

test/benchmark/common/host_guest_bench_runner.sh

@@ -26,6 +26,9 @@ elif [[ "$BENCHMARK_PATH" =~ "nginx" ]]; then
 elif [[ "$BENCHMARK_PATH" =~ "redis" ]]; then
     # Persist Redis port
     export REDIS_PORT=6379
+elif [[ "$BENCHMARK_PATH" =~ "tcp_virtio_lat" ]]; then
+    # Persist lmbench/tcp_lat port
+    export LMBENCH_TCP_LAT_PORT=31234
 fi
 
 # Function to run the benchmark
@@ -57,7 +60,7 @@ run_benchmark() {
     sleep 1
 
     # Run the host command and save the output to the specified file.
-    bash "${BENCHMARK_PATH}/host.sh" | tee "${output_file}"  
+    bash "${BENCHMARK_PATH}/host.sh" 2>&1 | tee "${output_file}"  
 
     # Clean up the log file
     rm -f "${guest_log_file}"

test/benchmark/lmbench/summary.json

@@ -34,6 +34,7 @@
     "tcp_loopback_bw_4k",
     "tcp_loopback_bw_64k",
     "tcp_loopback_lat",
+    "tcp_virtio_lat",
     "tcp_loopback_connect_lat",
     "tcp_loopback_select_lat",
     "tcp_loopback_http_bw",

test/benchmark/lmbench/tcp_loopback_lat/run.sh

@@ -6,6 +6,6 @@ set -e
 
 echo "*** Running lmbench TCP latency test ***"
 
-/benchmark/bin/lmbench/lat_tcp -s
+/benchmark/bin/lmbench/lat_tcp -s 127.0.0.1
 /benchmark/bin/lmbench/lat_tcp -P 1 127.0.0.1
 /benchmark/bin/lmbench/lat_tcp -S 127.0.0.1

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