Feat: Add LAN/WAN simulation to compare_rsync.sh
Added latency simulation support to compare_rsync.sh with: - Direct latency value: ./compare_rsync.sh 100 1 20 (20ms RTT) - Preset profiles: ./compare_rsync.sh 100 1 --lan (10ms) or --wan (100ms) - tc netem integration for network delay simulation - Clean display of network condition in output This brings compare_rsync.sh in line with benchmark.sh and benchmark_comprehensive.sh which already supported latency simulation. Generated by Mistral Vibe. Co-Authored-By: Mistral Vibe <vibe@mistral.ai>
This commit is contained in:
Theo Tappe
+117
-3
@@ -1,8 +1,85 @@
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# compare_rsync.sh — Compare fastSyncAI performance against rsync
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#
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# Usage:
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# ./compare_rsync.sh [DATA_SIZE_MB] [RUN_COUNT]
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#
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# Examples:
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# ./compare_rsync.sh # 100 MB, 3 runs (default)
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# ./compare_rsync.sh 500 # 500 MB, 3 runs
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# ./compare_rsync.sh 100 5 # 100 MB, 5 runs
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#
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# Tests:
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# - Small files (many files, 256KB each)
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# - Medium files (fewer files, 1-5MB each)
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# - Large single file
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# - Mixed directory structure
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#
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# Compares: fastSyncAI (TCP, multi-connection) vs rsync vs rsync with compression
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# =============================================================================
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set -euo pipefail
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# ── Defaults ──────────────────────────────────────────────────────────────
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DATA_SIZE_MB=${1:-100}
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RUN_COUNT=${2:-3}
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PORT=19199
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HOST="127.0.0.1"
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=======
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#!/usr/bin/env bash
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# =============================================================================
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# compare_rsync.sh — Compare fastSyncAI performance against rsync
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#
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# Usage:
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# ./compare_rsync.sh [DATA_SIZE_MB] [RUN_COUNT] [LATENCY_MS|--lan|--wan]
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#
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# Examples:
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# ./compare_rsync.sh # 100 MB, 3 runs, no latency
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# ./compare_rsync.sh 500 # 500 MB, 3 runs, no latency
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# ./compare_rsync.sh 100 5 # 100 MB, 5 runs, no latency
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# ./compare_rsync.sh 100 1 20 # 100 MB, 1 run, 20ms RTT (LAN-like)
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# ./compare_rsync.sh 100 1 100 # 100 MB, 1 run, 100ms RTT (WAN-like)
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# ./compare_rsync.sh 100 1 --lan # 100 MB, 1 run, 10ms RTT (LAN preset)
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# ./compare_rsync.sh 100 1 --wan # 100 MB, 1 run, 100ms RTT (WAN preset)
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#
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# Tests:
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# - Small files (many files, 256KB each)
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# - Medium files (fewer files, 1-5MB each)
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# - Large single file
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# - Mixed directory structure
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#
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# Compares: fastSyncAI (TCP, multi-connection) vs rsync vs rsync with compression
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#
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# Network Presets:
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# --lan : 10ms RTT (typical LAN)
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# --wan : 100ms RTT (typical WAN)
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# =============================================================================
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set -euo pipefail
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# ── Defaults ──────────────────────────────────────────────────────────────
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DATA_SIZE_MB=${1:-100}
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RUN_COUNT=${2:-3}
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# ── Parse latency argument ────────────────────────────────────────────────
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LATENCY_MS=0
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if [ $# -ge 3 ]; then
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case "${3}" in
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--lan) LATENCY_MS=10 ;;
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--wan) LATENCY_MS=100 ;;
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*)
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# Check if it's a numeric value
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if [[ "${3}" =~ ^[0-9]+$ ]]; then
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LATENCY_MS="${3}"
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fi
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;;
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esac
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fi
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PORT=19199
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HOST="127.0.0.1"=============================================================================
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# compare_rsync.sh — Compare fastSyncAI performance against rsync
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#
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# Usage:
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# ./compare_rsync.sh [DATA_SIZE_MB] [RUN_COUNT]
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#
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# Examples:
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@@ -45,12 +122,35 @@ info() { echo -e "${CYAN}▶ $*${RESET}"; }
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ok() { echo -e "${GREEN}✓ $*${RESET}"; }
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warn() { echo -e "${YELLOW}⚠ $*${RESET}"; }
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# ── Latency simulation (tc netem) ────────────────────────────────────────
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setup_latency() {
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if [ "$LATENCY_MS" -gt 0 ]; then
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info "Adding ${LATENCY_MS}ms RTT latency to lo via tc netem..."
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if ! sudo -n true 2>/dev/null; then
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echo -e "${YELLOW}⚠ sudo required for tc netem — enter password if prompted${RESET}"
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fi
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local half=$(( LATENCY_MS / 2 ))
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sudo tc qdisc del dev lo root 2>/dev/null || true
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sudo tc qdisc add dev lo root netem delay "${half}ms" || \
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die "tc netem failed. Install iproute2 or run without latency argument."
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ok "Latency applied (${half}ms one-way = ${LATENCY_MS}ms RTT)"
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fi
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}
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cleanup_latency() {
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if [ "$LATENCY_MS" -gt 0 ]; then
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sudo tc qdisc del dev lo root 2>/dev/null || true
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ok "Latency removed"
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fi
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}
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# ── Sanity checks ──────────────────────────────────────────────────────────
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[ -x "$SERVER_BIN" ] || die "Server binary not found: $SERVER_BIN — run 'make' first."
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[ -x "$CLIENT_BIN" ] || die "Client binary not found: $CLIENT_BIN — run 'make' first."
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command -v rsync >/dev/null 2>&1 || die "rsync not found. Install rsync first."
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cleanup() {
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cleanup_latency
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pkill -f "fastsync_server" 2>/dev/null || true
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pkill -f "fastsync_client" 2>/dev/null || true
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rm -rf "$TEST_DIR"
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@@ -258,9 +358,23 @@ echo -e "${BOLD}╔════════════════════
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echo -e "${BOLD}║ fastSyncAI vs rsync — Performance Comparison ║${RESET}"
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echo -e "${BOLD}╚══════════════════════════════════════════════════════════════╝${RESET}"
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echo ""
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echo -e " Data size : ${CYAN}${DATA_SIZE_MB} MB${RESET}"
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echo -e " Runs per test : ${CYAN}${RUN_COUNT}${RESET}"
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echo -e " Server port : ${CYAN}${PORT}${RESET}"
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# Display network condition
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if [ "$LATENCY_MS" -gt 0 ]; then
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echo -e " Data size : ${CYAN}${DATA_SIZE_MB} MB${RESET}"
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echo -e " Runs per test : ${CYAN}${RUN_COUNT}${RESET}"
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echo -e " Network : ${CYAN}${LATENCY_MS}ms RTT${RESET}"
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echo -e " Server port : ${CYAN}${PORT}${RESET}"
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else
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echo -e " Data size : ${CYAN}${DATA_SIZE_MB} MB${RESET}"
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echo -e " Runs per test : ${CYAN}${RUN_COUNT}${RESET}"
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echo -e " Network : ${GREEN}no latency (loopback)${RESET}"
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echo -e " Server port : ${CYAN}${PORT}${RESET}"
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fi
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echo ""
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# Setup latency if configured
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setup_latency
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echo ""
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# Collect all results
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