Volt VMM (Neutron Stardust): source-available under AGPSL v5.0
KVM-based microVMM for the Volt platform: - Sub-second VM boot times - Minimal memory footprint - Landlock LSM + seccomp security - Virtio device support - Custom kernel management Copyright (c) Armored Gates LLC. All rights reserved. Licensed under AGPSL v5.0
This commit is contained in:
Karl Clinger
208
benchmarks/latency.sh
Executable file
208
benchmarks/latency.sh
Executable file
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#!/bin/bash
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# Volt Network Benchmark - Latency Tests
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# Tests ICMP and TCP latency with percentile analysis
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set -e
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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# Parse arguments
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SERVER_IP="${1:?Usage: $0 <server-ip> [backend-name] [count]}"
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BACKEND="${2:-unknown}"
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PING_COUNT="${3:-1000}"
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SOCKPERF_DURATION="${4:-30}"
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# Setup results directory
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TIMESTAMP=$(date +%Y-%m-%d_%H%M%S)
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RESULTS_DIR="${SCRIPT_DIR}/results/${BACKEND}/${TIMESTAMP}"
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mkdir -p "$RESULTS_DIR"
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echo "=== Volt Latency Benchmark ==="
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echo "Server: $SERVER_IP"
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echo "Backend: $BACKEND"
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echo "Ping count: $PING_COUNT"
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echo "Results: $RESULTS_DIR"
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echo ""
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# Function to calculate percentiles from sorted data
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calc_percentiles() {
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local file="$1"
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local count=$(wc -l < "$file")
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if [ "$count" -eq 0 ]; then
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echo "N/A N/A N/A N/A N/A"
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return
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fi
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# Sort numerically
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sort -n "$file" > "${file}.sorted"
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# Calculate indices (1-indexed for sed)
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local p50_idx=$(( (count * 50 + 99) / 100 ))
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local p95_idx=$(( (count * 95 + 99) / 100 ))
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local p99_idx=$(( (count * 99 + 99) / 100 ))
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# Ensure indices are at least 1
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[ "$p50_idx" -lt 1 ] && p50_idx=1
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[ "$p95_idx" -lt 1 ] && p95_idx=1
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[ "$p99_idx" -lt 1 ] && p99_idx=1
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local min=$(head -1 "${file}.sorted")
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local max=$(tail -1 "${file}.sorted")
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local p50=$(sed -n "${p50_idx}p" "${file}.sorted")
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local p95=$(sed -n "${p95_idx}p" "${file}.sorted")
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local p99=$(sed -n "${p99_idx}p" "${file}.sorted")
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# Calculate average
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local avg=$(awk '{sum+=$1} END {printf "%.3f", sum/NR}' "${file}.sorted")
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rm -f "${file}.sorted"
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echo "$min $avg $p50 $p95 $p99 $max"
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}
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# ICMP Ping Test
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echo "[$(date +%H:%M:%S)] Running ICMP ping test (${PING_COUNT} packets)..."
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PING_RAW="${RESULTS_DIR}/ping-raw.txt"
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PING_LATENCIES="${RESULTS_DIR}/ping-latencies.txt"
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if ping -c "$PING_COUNT" -i 0.01 "$SERVER_IP" > "$PING_RAW" 2>&1; then
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# Extract latency values (time=X.XX ms)
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grep -oP 'time=\K[0-9.]+' "$PING_RAW" > "$PING_LATENCIES"
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# Convert to microseconds for consistency
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awk '{print $1 * 1000}' "$PING_LATENCIES" > "${PING_LATENCIES}.us"
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mv "${PING_LATENCIES}.us" "$PING_LATENCIES"
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read min avg p50 p95 p99 max <<< $(calc_percentiles "$PING_LATENCIES")
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echo " ICMP Ping Results (µs):"
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printf " Min: %10.1f\n" "$min"
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printf " Avg: %10.1f\n" "$avg"
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printf " P50: %10.1f\n" "$p50"
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printf " P95: %10.1f\n" "$p95"
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printf " P99: %10.1f\n" "$p99"
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printf " Max: %10.1f\n" "$max"
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# Save summary
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{
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echo "ICMP_MIN_US=$min"
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echo "ICMP_AVG_US=$avg"
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echo "ICMP_P50_US=$p50"
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echo "ICMP_P95_US=$p95"
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echo "ICMP_P99_US=$p99"
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echo "ICMP_MAX_US=$max"
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} > "${RESULTS_DIR}/ping-summary.env"
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else
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echo " → FAILED (check if ICMP is allowed)"
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fi
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echo ""
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# TCP Latency with sockperf (ping-pong mode)
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echo "[$(date +%H:%M:%S)] Running TCP latency test (sockperf pp, ${SOCKPERF_DURATION}s)..."
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# Check if sockperf server is reachable
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if timeout 5 bash -c "echo > /dev/tcp/$SERVER_IP/11111" 2>/dev/null; then
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SOCKPERF_RAW="${RESULTS_DIR}/sockperf-raw.txt"
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SOCKPERF_LATENCIES="${RESULTS_DIR}/sockperf-latencies.txt"
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# Run sockperf in ping-pong mode
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if sockperf pp -i "$SERVER_IP" -t "$SOCKPERF_DURATION" --full-log "$SOCKPERF_RAW" > "${RESULTS_DIR}/sockperf-output.txt" 2>&1; then
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# Extract latency values from full log (if available)
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if [ -f "$SOCKPERF_RAW" ]; then
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# sockperf full-log format: txTime, rxTime, latency (nsec)
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awk '{print $3/1000}' "$SOCKPERF_RAW" > "$SOCKPERF_LATENCIES"
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else
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# Parse from summary output
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grep -oP 'latency=\K[0-9.]+' "${RESULTS_DIR}/sockperf-output.txt" > "$SOCKPERF_LATENCIES" 2>/dev/null || true
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fi
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if [ -s "$SOCKPERF_LATENCIES" ]; then
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read min avg p50 p95 p99 max <<< $(calc_percentiles "$SOCKPERF_LATENCIES")
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echo " TCP Latency Results (µs):"
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printf " Min: %10.1f\n" "$min"
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printf " Avg: %10.1f\n" "$avg"
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printf " P50: %10.1f\n" "$p50"
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printf " P95: %10.1f\n" "$p95"
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printf " P99: %10.1f\n" "$p99"
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printf " Max: %10.1f\n" "$max"
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{
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echo "TCP_MIN_US=$min"
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echo "TCP_AVG_US=$avg"
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echo "TCP_P50_US=$p50"
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echo "TCP_P95_US=$p95"
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echo "TCP_P99_US=$p99"
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echo "TCP_MAX_US=$max"
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} > "${RESULTS_DIR}/sockperf-summary.env"
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else
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# Parse summary from sockperf output
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echo " → Parsing summary output..."
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grep -E "(avg|percentile|latency)" "${RESULTS_DIR}/sockperf-output.txt" || true
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fi
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else
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echo " → FAILED"
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fi
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else
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echo " → SKIPPED (sockperf server not running on $SERVER_IP:11111)"
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echo " → Run 'sockperf sr' on the server"
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fi
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echo ""
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# UDP Latency with sockperf
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echo "[$(date +%H:%M:%S)] Running UDP latency test (sockperf under-load, ${SOCKPERF_DURATION}s)..."
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if timeout 5 bash -c "echo > /dev/udp/$SERVER_IP/11111" 2>/dev/null || true; then
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SOCKPERF_UDP_RAW="${RESULTS_DIR}/sockperf-udp-raw.txt"
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if sockperf under-load -i "$SERVER_IP" -t "$SOCKPERF_DURATION" --full-log "$SOCKPERF_UDP_RAW" > "${RESULTS_DIR}/sockperf-udp-output.txt" 2>&1; then
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echo " → Complete"
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# Parse percentiles from sockperf output
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grep -E "(percentile|avg-latency)" "${RESULTS_DIR}/sockperf-udp-output.txt" | head -10
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else
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echo " → FAILED or server not running"
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fi
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fi
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# Generate overall summary
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echo ""
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echo "=== Latency Summary ==="
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SUMMARY_FILE="${RESULTS_DIR}/latency-summary.txt"
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{
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echo "Volt Latency Benchmark Results"
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echo "===================================="
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echo "Backend: $BACKEND"
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echo "Server: $SERVER_IP"
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echo "Date: $(date)"
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echo ""
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if [ -f "${RESULTS_DIR}/ping-summary.env" ]; then
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echo "ICMP Ping Latency (µs):"
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source "${RESULTS_DIR}/ping-summary.env"
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printf " %-8s %10.1f\n" "Min:" "$ICMP_MIN_US"
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printf " %-8s %10.1f\n" "Avg:" "$ICMP_AVG_US"
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printf " %-8s %10.1f\n" "P50:" "$ICMP_P50_US"
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printf " %-8s %10.1f\n" "P95:" "$ICMP_P95_US"
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printf " %-8s %10.1f\n" "P99:" "$ICMP_P99_US"
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printf " %-8s %10.1f\n" "Max:" "$ICMP_MAX_US"
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echo ""
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fi
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if [ -f "${RESULTS_DIR}/sockperf-summary.env" ]; then
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echo "TCP Latency (µs):"
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source "${RESULTS_DIR}/sockperf-summary.env"
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printf " %-8s %10.1f\n" "Min:" "$TCP_MIN_US"
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printf " %-8s %10.1f\n" "Avg:" "$TCP_AVG_US"
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printf " %-8s %10.1f\n" "P50:" "$TCP_P50_US"
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printf " %-8s %10.1f\n" "P95:" "$TCP_P95_US"
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printf " %-8s %10.1f\n" "P99:" "$TCP_P99_US"
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printf " %-8s %10.1f\n" "Max:" "$TCP_MAX_US"
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fi
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} | tee "$SUMMARY_FILE"
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echo ""
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echo "Full results saved to: $RESULTS_DIR"
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