taptap
4b68ef17ed
- Revert streaming compression to non-streaming approach (fixes decompression errors) - Reduce client timeout in benchmark from 600s to 60s - Simplify wait time calculation in benchmark to fixed 2s Generated by Mistral Vibe. Co-Authored-By: Mistral Vibe <vibe@mistral.ai>
478 lines
20 KiB
Bash
Executable File
478 lines
20 KiB
Bash
Executable File
#!/usr/bin/env bash
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# =============================================================================
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# benchmark_network.sh — Network Condition Benchmark for fastSyncAI
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#
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# Compares fastSyncAI and rsync under IDENTICAL network conditions
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# by running both over TCP on the loopback interface with tc netem simulation.
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#
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# Usage:
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# ./benchmark_network.sh [SCENARIO] [DATA_SIZE_MB] [RUN_COUNT]
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#
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# Scenarios:
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# --lan : 10ms RTT, no loss (typical LAN)
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# --wan : 100ms RTT, no loss (typical WAN)
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# --wan-loss-1 : 100ms RTT, 1% packet loss
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# --wan-loss-5 : 100ms RTT, 5% packet loss
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# --wan-jitter : 100ms RTT, +/-50ms jitter
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# --custom LAT_ms : Custom latency
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#
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# Examples:
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# ./benchmark_network.sh --lan
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# ./benchmark_network.sh --wan 200 1
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# ./benchmark_network.sh --wan-loss-1 50
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# =============================================================================
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set -euo pipefail
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# ── Defaults ──────────────────────────────────────────────────────────────
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DATA_SIZE_MB=${2:-50}
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RUN_COUNT=${3:-1}
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SCENARIO="${1:---lan}"
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# ── Parse scenario ────────────────────────────────────────────────────────
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LATENCY_MS=0
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PACKET_LOSS="0%"
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JITTER_MS="0"
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case "$SCENARIO" in
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--lan) LATENCY_MS=10; PACKET_LOSS="0.1%"; JITTER_MS=2; SCENARIO_NAME="LAN (10ms RTT, 0.1% loss, ±2ms jitter)" ;;
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--wan) LATENCY_MS=100; PACKET_LOSS="1%"; JITTER_MS=10; SCENARIO_NAME="WAN (100ms RTT, 1% loss, ±10ms jitter)" ;;
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--wan-loss-1) LATENCY_MS=100; PACKET_LOSS="1%"; SCENARIO_NAME="WAN + 1% loss" ;;
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--wan-loss-5) LATENCY_MS=100; PACKET_LOSS="5%"; SCENARIO_NAME="WAN + 5% loss" ;;
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--wan-jitter) LATENCY_MS=100; JITTER_MS=50; SCENARIO_NAME="WAN + jitter" ;;
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--custom)
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if [ -n "${2:-}" ] && [[ "${2}" =~ ^[0-9]+$ ]]; then
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LATENCY_MS="$2"
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DATA_SIZE_MB=${3:-100}
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RUN_COUNT=${4:-3}
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SCENARIO_NAME="Custom (${LATENCY_MS}ms RTT)"
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else
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echo "ERROR: --custom requires latency value in ms"
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exit 1
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fi
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;;
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*)
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echo "ERROR: Unknown scenario '$SCENARIO'"
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echo "Available: --lan, --wan, --wan-loss-1, --wan-loss-5, --wan-jitter, --custom"
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exit 1
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;;
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esac
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# ── Ports ────────────────────────────────────────────────────────────────
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FASTSYNC_PORT=19410
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RSYNC_PORT=19400
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HOST="127.0.0.1"
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SERVER_BIN="./fastsync_server"
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CLIENT_BIN="./fastsync_client"
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# ── Directories ────────────────────────────────────────────────────────────
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TEST_DIR="network_bench_$$"
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SRC_DIR="$TEST_DIR/src"
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DST_DIR_BASE="$TEST_DIR/dst"
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RSYNC_SHARE="$TEST_DIR/rsync_share"
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# ── Colours ────────────────────────────────────────────────────────────────
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RED='\033[0;31m'; GREEN='\033[0;32m'; YELLOW='\033[1;33m'
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CYAN='\033[0;36m'; BOLD='\033[1m'; RESET='\033[0m'
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# ── Helpers ────────────────────────────────────────────────────────────────
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die() { echo -e "${RED}ERROR: $*${RESET}" >&2; exit 1; }
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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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# ── Network simulation ────────────────────────────────────────────────────
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setup_network() {
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info "Setting up network: ${SCENARIO_NAME}..."
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if ! sudo -n true 2>/dev/null; then
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echo -e "${YELLOW}⚠ sudo required for tc netem${RESET}"
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fi
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sudo tc qdisc del dev lo root 2>/dev/null || true
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local netem_cmd="delay ${LATENCY_MS}ms"
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[ "$JITTER_MS" -gt 0 ] && netem_cmd="$netem_cmd ${JITTER_MS}ms"
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[ "$PACKET_LOSS" != "0%" ] && netem_cmd="$netem_cmd loss ${PACKET_LOSS}"
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sudo tc qdisc add dev lo root netem $netem_cmd || die "tc netem failed"
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ok "Network active: ${LATENCY_MS}ms RTT, loss=${PACKET_LOSS}, jitter=±${JITTER_MS}ms"
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}
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cleanup_network() {
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sudo tc qdisc del dev lo root 2>/dev/null || true
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}
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# ── rsync daemon ────────────────────────────────────────────────────────────
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RSYNCD_PID=""
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start_rsyncd() {
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# Get absolute path for the share
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local abs_share
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abs_share=$(cd "$RSYNC_SHARE" && pwd)
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# Write config file with absolute path to share
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cat > "$TEST_DIR/rsyncd.conf" <<EOF
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[network_bench]
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path = $abs_share
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read only = false
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use chroot = false
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max connections = 0
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EOF
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# Start daemon from TEST_DIR using relative config path
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# Note: rsync --daemon forks, so we just check the port
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cd "$TEST_DIR"
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rsync --daemon --port="$RSYNC_PORT" --config=rsyncd.conf 2>/dev/null
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cd - >/dev/null
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sleep 2
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# Verify port is listening (rsyncd forks so PID check doesn't work)
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if ! ss -tlnp 2>/dev/null | grep -q ":$RSYNC_PORT "; then
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# Try to get PID
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RSYNCD_PID=$(ss -tlnp 2>/dev/null | grep ":$RSYNC_PORT " | head -1 | grep -oP 'pid=\K[0-9]+' || echo "")
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die "rsyncd not listening on port $RSYNC_PORT (PID=$RSYNCD_PID)"
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fi
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# Get actual PID (use head -1 to handle IPv4/IPv6 duplicate)
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RSYNCD_PID=$(ss -tlnp 2>/dev/null | grep ":$RSYNC_PORT " | head -1 | grep -oP 'pid=\K[0-9]+' || echo "")
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ok "rsyncd started on port $RSYNC_PORT (PID=$RSYNCD_PID)"
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}
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stop_rsyncd() {
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[ -n "$RSYNCD_PID" ] && kill "$RSYNCD_PID" 2>/dev/null || true
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wait "$RSYNCD_PID" 2>/dev/null || true
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RSYNCD_PID=""
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}
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# ── Sanity checks ──────────────────────────────────────────────────────────
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[ -x "$SERVER_BIN" ] || die "Server binary not found: $SERVER_BIN — run 'make' first."
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[ -x "$CLIENT_BIN" ] || die "Client binary not found: $CLIENT_BIN — run 'make' first."
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command -v rsync >/dev/null 2>&1 || die "rsync not found."
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cleanup() {
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stop_rsyncd
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cleanup_network
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pkill -f "fastsync_server" 2>/dev/null || true
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pkill -f "fastsync_client" 2>/dev/null || true
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rm -rf "$TEST_DIR"
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}
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trap cleanup EXIT
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# Clean stale processes
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pkill -f "rsync --daemon" 2>/dev/null || true
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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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cleanup_network 2>/dev/null || true
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sleep 1
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# ── Generate test data ──────────────────────────────────────────────────────
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generate_data() {
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info "Generating ~${DATA_SIZE_MB}MB test data..."
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rm -rf "$TEST_DIR"
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mkdir -p "$SRC_DIR/small" "$SRC_DIR/medium" "$SRC_DIR/large" "$RSYNC_SHARE"
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# Small files (~25% of total)
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local small_count=$(( (DATA_SIZE_MB * 262144) / 1048576 ))
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[ "$small_count" -lt 10 ] && small_count=10
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[ "$small_count" -gt 100 ] && small_count=100
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for i in $(seq 1 $small_count); do
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dd if=/dev/urandom bs=256K count=1 of="$SRC_DIR/small/file_$i.bin" 2>/dev/null
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done
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# Medium files (~50% of total)
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local medium_count=$(( (DATA_SIZE_MB * 524288) / 1048576 ))
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[ "$medium_count" -lt 5 ] && medium_count=5
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[ "$medium_count" -gt 20 ] && medium_count=20
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for i in $(seq 1 $medium_count); do
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dd if=/dev/urandom bs=1M count=1 of="$SRC_DIR/medium/file_$i.bin" 2>/dev/null
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done
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# Large files (~25%)
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local large_mb=$(( DATA_SIZE_MB - (small_count * 256 / 1024) - medium_count ))
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[ "$large_mb" -lt 5 ] && large_mb=5
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local large_count=3
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[ "$large_mb" -lt 10 ] && large_count=1
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for i in $(seq 1 $large_count); do
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local sz=$(( large_mb * 1048576 / large_count / 1048576 ))
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[ "$sz" -lt 1 ] && sz=1
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dd if=/dev/urandom bs=1M count=$sz of="$SRC_DIR/large/file_$i.bin" 2>/dev/null
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done
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# Copy to rsync share
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cp -r "$SRC_DIR"/* "$RSYNC_SHARE/"
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local total_files=$(find "$SRC_DIR" -type f | wc -l)
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local total_size=$(du -sh "$SRC_DIR" | cut -f1)
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ok "Generated $total_files files, $total_size"
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}
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# ── Verify ──────────────────────────────────────────────────────────────────
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verify() {
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local src=$1 dst=$2
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local sc=$(find "$src" -type f | wc -l)
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local dc=$(find "$dst" -type f | wc -l)
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[ "$sc" -ne "$dc" ] && return 1
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local ss=$(find "$src" -type f -printf '%s\n' | awk '{sum+=$1} END {print sum}')
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local ds=$(find "$dst" -type f -printf '%s\n' | awk '{sum+=$1} END {print sum}')
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[ "$ss" -ne "$ds" ] && return 1
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return 0
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}
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# ── Run fastSyncAI ────────────────────────────────────────────────────────
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run_fastsync() {
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local nconn=$1
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local use_compress=$2
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local dst="$DST_DIR_BASE/fastsync_${nconn}_${use_compress}"
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local port=$((FASTSYNC_PORT + nconn + (use_compress * 100)))
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rm -rf "$dst"
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mkdir -p "$dst"
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"$SERVER_BIN" -p "$port" -d "$dst" >/dev/null 2>&1 &
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local spid=$!
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sleep 1
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local output
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local compress_flag=""
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[ "$use_compress" -eq 0 ] && compress_flag="-c"
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output=$(timeout 60 "$CLIENT_BIN" -h "$HOST" -p "$port" -s "$SRC_DIR" -n "$nconn" $compress_flag 2>&1) || true
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# Extract actual transfer time from client output
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local transfer_ms=$(echo "$output" | grep -oP 'ms=\K[0-9.]+' || echo "0")
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local transfer_ms_int=$(echo "$transfer_ms" | awk '{printf "%d", $1+0}')
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# Use fixed short wait time since timeout already limits client
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sleep 2
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kill "$spid" 2>/dev/null || true
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wait "$spid" 2>/dev/null || true
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sync
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sleep 1
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local ms=$(echo "$output" | grep -oP 'ms=\K[0-9.]+' || echo "0")
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local mbs=$(echo "$output" | grep -oP 'throughput_mbs=\K[0-9.]+' || echo "0")
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local ok=1
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verify "$SRC_DIR" "$dst" || ok=0
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echo "${ms}|${mbs}|${ok}"
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rm -rf "$dst"
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}
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# ── Run rsync over TCP ───────────────────────────────────────────────────
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run_rsync_tcp() {
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local use_compress=${1:-0}
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local dst="$DST_DIR_BASE/rsync_${use_compress}"
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rm -rf "$dst"
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mkdir -p "$dst"
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local start=$(date +%s%N)
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local compress_flag=""
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[ "$use_compress" -eq 1 ] && compress_flag="--compress"
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rsync -a $compress_flag "rsync://$HOST:$RSYNC_PORT/network_bench/" "$dst/" >/dev/null 2>&1
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local end=$(date +%s%N)
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local ms=$(( (end - start) / 1000000 ))
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local total_bytes=$(find "$SRC_DIR" -type f -printf '%s\n' | awk '{sum+=$1} END {print sum}')
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local mbs=0
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[ "$ms" -gt 0 ] && mbs=$(awk "BEGIN {printf \"%.2f\", $total_bytes / 1048576.0 / ($ms / 1000.0)}")
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local ok=1
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verify "$SRC_DIR" "$dst" || ok=0
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echo "${ms}|${mbs}|${ok}"
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rm -rf "$dst"
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}
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# ── Bar chart ─────────────────────────────────────────────────────────────
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draw_bar() {
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local val=$1 max=$2 width=30
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[ "$max" -eq 0 ] && max=1
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# Convert to integers for arithmetic
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local val_int=$(echo "$val" | awk '{printf "%d", $1+0}')
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local max_int=$(echo "$max" | awk '{printf "%d", $1+0}')
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[ "$max_int" -eq 0 ] && max_int=1
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local filled=$(( val_int * width / max_int ))
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[ "$filled" -gt "$width" ] && filled=$width
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printf -v bar ''
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for ((i=0; i<filled; i++)); do bar+="█"; done
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for ((i=filled; i<width; i++)); do bar+="░"; done
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echo "$bar"
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}
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# ────────────────────────────────────────────────────────────────────────────
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# MAIN
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# ────────────────────────────────────────────────────────────────────────────
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echo ""
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echo -e "${BOLD}═══════════════════════════════════════════════════════════════════════════╗${RESET}"
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echo -e "${BOLD} fastSyncAI — Fair Network Comparison Benchmark${RESET}"
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echo -e "${BOLD} (All tools tested with IDENTICAL network conditions)${RESET}"
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echo -e "${BOLD}═══════════════════════════════════════════════════════════════════════════╝${RESET}"
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echo ""
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echo -e " Scenario : ${CYAN}${SCENARIO_NAME}${RESET}"
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echo -e " Data size : ${CYAN}${DATA_SIZE_MB} MB${RESET}"
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echo -e " Latency : ${CYAN}${LATENCY_MS}ms RTT${RESET}"
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echo -e " Packet loss: ${CYAN}${PACKET_LOSS}${RESET}"
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echo -e " Jitter : ${CYAN}±${JITTER_MS}ms${RESET}"
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echo ""
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# Setup network
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setup_network
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# Generate data and start rsyncd
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generate_data
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start_rsyncd
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echo ""
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# Test configurations
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CONN_COUNTS=(1 2 4 8 16)
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FS_LABELS=("fastSyncAI 1 conn" "fastSyncAI 2 conn" "fastSyncAI 4 conn" "fastSyncAI 8 conn" "fastSyncAI 16 conn")
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info "Testing over network (${SCENARIO_NAME})..."
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echo ""
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# Collect results
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declare -a FS_RES FS_COMP_RES RSYNC_RES RSYNCC_RES
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# fastSyncAI tests (with compression - default)
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for i in "${!CONN_COUNTS[@]}"; do
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n=${CONN_COUNTS[$i]}
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echo -n " ${FS_LABELS[$i]} (compressed)... "
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result=$(run_fastsync $n 1)
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IFS='|' read -r ms mbs ok <<< "$result"
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FS_COMP_RES+=("$ms|$mbs|$ok")
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[ "$ok" -eq 1 ] && ok "${mbs} MB/s (${ms}ms)" || warn "${mbs} MB/s (${ms}ms) FAILED"
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done
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# fastSyncAI tests (without compression)
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for i in "${!CONN_COUNTS[@]}"; do
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n=${CONN_COUNTS[$i]}
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echo -n " ${FS_LABELS[$i]} (uncompressed)... "
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result=$(run_fastsync $n 0)
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IFS='|' read -r ms mbs ok <<< "$result"
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FS_RES+=("$ms|$mbs|$ok")
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[ "$ok" -eq 1 ] && ok "${mbs} MB/s (${ms}ms)" || warn "${mbs} MB/s (${ms}ms) FAILED"
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done
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# rsync tests (over TCP with network simulation)
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echo -n " rsync (TCP)... "
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result=$(run_rsync_tcp 0)
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IFS='|' read -r ms mbs ok <<< "$result"
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RSYNC_RES=("$ms|$mbs|$ok")
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[ "$ok" -eq 1 ] && ok "${mbs} MB/s (${ms}ms)" || warn "${mbs} MB/s (${ms}ms) FAILED"
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echo -n " rsync + compress (TCP)... "
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result=$(run_rsync_tcp 1)
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IFS='|' read -r ms mbs ok <<< "$result"
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RSYNCC_RES=("$ms|$mbs|$ok")
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[ "$ok" -eq 1 ] && ok "${mbs} MB/s (${ms}ms)" || warn "${mbs} MB/s (${ms}ms) FAILED"
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# Re-setup network for final TCP results display
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setup_network
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echo ""
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echo -e "${BOLD}═══════════════════════════════════════════════════════════════════════════╗${RESET}"
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echo -e "${BOLD} FAIR COMPARISON RESULTS${RESET}"
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echo -e "${BOLD} (All tools over TCP with ${SCENARIO_NAME})${RESET}"
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echo -e "${BOLD}═══════════════════════════════════════════════════════════════════════════╝${RESET}"
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echo ""
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# Calculate max for scaling
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calc_max() {
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local max=0
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for res in "${FS_RES[@]}" "${FS_COMP_RES[@]}" "${RSYNC_RES[@]}" "${RSYNCC_RES[@]}"; do
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local mbs=$(echo "$res" | cut -d'|' -f2)
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local int=$(echo "$mbs" | awk '{printf "%d", $1+0}')
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[ "$int" -gt "$max" ] 2>/dev/null && max=$int
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done
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echo $max
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}
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MAX_MBS=$(calc_max)
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[ "$MAX_MBS" -eq 0 ] && MAX_MBS=100
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printf " %-22s %-10s %-10s %s\n" "Tool" "Time (ms)" "MB/s" "Throughput"
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printf " %-22s %-10s %-10s %s\n" "----------------------" "----------" "----------" "------------"
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for i in "${!FS_COMP_RES[@]}"; do
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IFS='|' read -r ms mbs ok <<< "${FS_COMP_RES[$i]}"
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bar=$(draw_bar "$mbs" "$MAX_MBS")
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v=$([ "$ok" -eq 1 ] && echo "✓" || echo "✗")
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printf " %-22s %-10s %-10s %s %s\n" "${FS_LABELS[$i]} (LZ4)" "$ms" "$mbs" "$bar" "$v"
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done
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for i in "${!FS_RES[@]}"; do
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IFS='|' read -r ms mbs ok <<< "${FS_RES[$i]}"
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bar=$(draw_bar "$mbs" "$MAX_MBS")
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v=$([ "$ok" -eq 1 ] && echo "✓" || echo "✗")
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printf " %-22s %-10s %-10s %s %s\n" "${FS_LABELS[$i]}" "$ms" "$mbs" "$bar" "$v"
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done
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IFS='|' read -r ms mbs ok <<< "${RSYNC_RES[0]}"
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bar=$(draw_bar "$mbs" "$MAX_MBS")
|
|
v=$([ "$ok" -eq 1 ] && echo "✓" || echo "✗")
|
|
printf " %-22s %-10s %-10s %s %s\n" "rsync (TCP)" "$ms" "$mbs" "$bar" "$v"
|
|
|
|
IFS='|' read -r ms mbs ok <<< "${RSYNCC_RES[0]}"
|
|
bar=$(draw_bar "$mbs" "$MAX_MBS")
|
|
v=$([ "$ok" -eq 1 ] && echo "✓" || echo "✗")
|
|
printf " %-22s %-10s %-10s %s %s\n" "rsync+compress (TCP)" "$ms" "$mbs" "$bar" "$v"
|
|
|
|
# Analysis
|
|
echo ""
|
|
echo -e "${BOLD}═══════════════════════════════════════════════════════════════════════════╗${RESET}"
|
|
echo -e "${BOLD} ANALYSIS${RESET}"
|
|
echo -e "${BOLD}═══════════════════════════════════════════════════════════════════════════╝${RESET}"
|
|
echo ""
|
|
|
|
# Find best (use compressed results as primary)
|
|
best_idx=0
|
|
best_mbs=0
|
|
for i in "${!FS_COMP_RES[@]}"; do
|
|
this_mbs=$(echo "${FS_COMP_RES[$i]}" | cut -d'|' -f2 | awk '{printf "%d", $1+0}')
|
|
[ "$this_mbs" -gt "$best_mbs" ] && best_mbs=$this_mbs && best_idx=$i
|
|
done
|
|
best_label="${FS_LABELS[$best_idx]} (LZ4)"
|
|
|
|
# Also find best uncompressed for comparison
|
|
best_no_compress_idx=0
|
|
best_no_compress_mbs=0
|
|
for i in "${!FS_RES[@]}"; do
|
|
this_mbs=$(echo "${FS_RES[$i]}" | cut -d'|' -f2 | awk '{printf "%d", $1+0}')
|
|
[ "$this_mbs" -gt "$best_no_compress_mbs" ] && best_no_compress_mbs=$this_mbs && best_no_compress_idx=$i
|
|
done
|
|
best_no_compress_label="${FS_LABELS[$best_no_compress_idx]}"
|
|
|
|
|
|
|
|
IFS='|' read -r rs_ms rs_mbs rs_ok <<< "${RSYNC_RES[0]}"
|
|
rs_mbs_int=$(echo "$rs_mbs" | awk '{printf "%d", $1+0}')
|
|
|
|
ok "Best fastSyncAI (LZ4): $best_label (${best_mbs} MB/s)"
|
|
ok "Best fastSyncAI (no compress): $best_no_compress_label (${best_no_compress_mbs} MB/s)"
|
|
|
|
# Compression benefit
|
|
if [ "$best_mbs" -gt 0 ] && [ "$best_no_compress_mbs" -gt 0 ]; then
|
|
if [ "$best_mbs" -gt "$best_no_compress_mbs" ]; then
|
|
compress_speedup=$(awk "BEGIN {printf \"%.2f\", $best_mbs / ($best_no_compress_mbs == 0 ? 0.01 : $best_no_compress_mbs)}")
|
|
echo -e " ${GREEN}Compression provides ${compress_speedup}x speedup${RESET}"
|
|
else
|
|
echo -e " ${YELLOW}Compression: no benefit (data likely incompressible)${RESET}"
|
|
fi
|
|
fi
|
|
|
|
if [ "$rs_mbs_int" -gt 0 ]; then
|
|
echo ""
|
|
echo "Speedup vs rsync (both over ${SCENARIO_NAME}):"
|
|
speedup=$(awk "BEGIN {printf \"%.2f\", $best_mbs / ($rs_mbs_int == 0 ? 0.01 : $rs_mbs_int)}")
|
|
if [ "$best_mbs" -gt "$rs_mbs_int" ]; then
|
|
echo -e " ${GREEN}fastSyncAI (LZ4) is ${speedup}x FASTER than rsync${RESET}"
|
|
elif [ "$rs_mbs_int" -gt "$best_mbs" ]; then
|
|
speedup=$(awk "BEGIN {printf \"%.2f\", $rs_mbs_int / ($best_mbs == 0 ? 0.01 : $best_mbs)}")
|
|
echo -e " ${GREEN}rsync is ${speedup}x faster than fastSyncAI (LZ4)${RESET}"
|
|
else
|
|
echo -e " Both performed similarly"
|
|
fi
|
|
fi
|
|
|
|
echo ""
|
|
ok "Benchmark complete!"
|