Fix: Multiple benchmark script bugs
- benchmark_network.sh: - Removed info() call in run_fastsync that contaminated output parsing - Reduced excessive wait times (was up to 66s for WAN) - More reasonable dynamic wait based on latency - compare_rsync.sh: - Fixed hardcoded -n 4 connections, now accepts connection count parameter - Replaced slow md5sum verification with fast file count+size check - Added latency-aware wait times for 1 connection - benchmark.sh: - Added sync after client to ensure disk writes complete - Added EXIT trap for tc netem cleanup and process cleanup - Removed duplicate manual cleanup - benchmark_comprehensive.sh: - Added latency-aware wait times for 1 connection in run_fastsync - Added documentation note that rsync/cp bypass tc netem (use benchmark_network.sh for fair TCP comparison) Generated by Mistral Vibe. Co-Authored-By: Mistral Vibe <vibe@mistral.ai>
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taptap
+12
-2
@@ -41,6 +41,16 @@ ok() { echo -e "${GREEN}✓ $*${RESET}"; }
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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: $CLIENT_BIN — run 'make' first."
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cleanup() {
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if [ "$LATENCY_MS" -gt 0 ]; then
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sudo tc qdisc del dev lo root 2>/dev/null || true
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fi
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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 "$DATA_DIR" "$DEST_DIR"
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}
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trap cleanup EXIT
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# ── Generate test data ────────────────────────────────────────────────────────
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generate_data() {
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info "Generating test data (~50 MB mixed tree)..."
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@@ -105,6 +115,7 @@ run_pass() {
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kill "$srv_pid" 2>/dev/null
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wait "$srv_pid" 2>/dev/null
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sync # Ensure all writes are flushed to disk
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# Parse the machine-readable BENCH: line
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local ms mbs
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@@ -204,6 +215,5 @@ for i in "${!CONNECTIONS[@]}"; do
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done
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echo ""
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ok "Benchmark done. Cleaning up..."
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rm -rf "$DATA_DIR" "$DEST_DIR"
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ok "Benchmark done."
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echo ""
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@@ -1,10 +1,29 @@
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#!/usr/bin/env bash
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# benchmark_comprehensive.sh — Comprehensive benchmark for fastSyncAI
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#
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# Compares fastSyncAI against rsync, rclone, unison, and other tools
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# Tests different connection counts and settings
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#
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# Usage:
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# ./benchmark_comprehensive.sh [DATA_SIZE_MB] [RUN_COUNT] [LATENCY_MS]
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=======
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# =============================================================================
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# benchmark_comprehensive.sh — Comprehensive benchmark for fastSyncAI
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#
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# Compares fastSyncAI against rsync, rclone, unison, and other tools
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# Tests different connection counts and settings
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#
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# NOTE: When LATENCY_MS > 0, only fastSyncAI (TCP-based) experiences the network
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# latency. rsync, rclone, unison, and cp operate locally and bypass tc netem.
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# For fair TCP-based comparison of all tools, use benchmark_network.sh instead.
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#
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# Usage:
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# ./benchmark_comprehensive.sh [DATA_SIZE_MB] [RUN_COUNT] [LATENCY_MS]=============================================================================
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# benchmark_comprehensive.sh — Comprehensive benchmark for fastSyncAI
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#
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# Compares fastSyncAI against rsync, rclone, unison, and other tools
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# Tests different connection counts and settings
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#
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# Usage:
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# ./benchmark_comprehensive.sh [DATA_SIZE_MB] [RUN_COUNT] [LATENCY_MS]
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#
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@@ -175,7 +194,12 @@ run_fastsync() {
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output=$(timeout 120 "$CLIENT_BIN" -h "$HOST" -p "$server_port" -s "$SRC_DIR" -n "$nconn" 2>&1) || true
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# Wait for client to fully finish sending DONE and server to process all data
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sleep 3
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# With network latency, 1 connection needs more time
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local wait_time=3
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if [ "$LATENCY_MS" -gt 0 ] && [ "$nconn" -eq 1 ]; then
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wait_time=$(( 3 + LATENCY_MS / 10 + 2 ))
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fi
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sleep $wait_time
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# Signal server to exit (it will finish current transfers and die)
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kill "$srv_pid" 2>/dev/null || true
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timeout 10 wait "$srv_pid" 2>/dev/null || true
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+11
-10
@@ -232,21 +232,22 @@ run_fastsync() {
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local output
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output=$(timeout 300 "$CLIENT_BIN" -h "$HOST" -p "$port" -s "$SRC_DIR" -n "$nconn" 2>&1) || true
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# With network latency, wait longer for all data to be written and synced to disk
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# Scale wait time based on latency: base wait + (latency factor * connection count factor)
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# 1 connection needs significantly more time under high latency
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local base_wait=$(( LATENCY_MS * 2 / 10 ))
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local conn_factor=$(( 16 / nconn ))
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local wait_time=$(( base_wait + conn_factor + 5 ))
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[ "$wait_time" -lt 10 ] && wait_time=10
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[ "$nconn" -eq 1 ] && wait_time=$(( wait_time + LATENCY_MS / 5 + 5 ))
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# With network latency, wait for all data to be written and synced to disk
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# Base wait: proportional to latency (round-trip * 2 for safety margin)
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# Connection factor: more connections = faster transfer = less extra wait needed
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# 1 connection needs more time as data is sent sequentially
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local base_wait=$(( LATENCY_MS / 10 ))
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[ "$base_wait" -lt 2 ] && base_wait=2
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local conn_factor=$(( 10 / nconn ))
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local wait_time=$(( base_wait + conn_factor + 3 ))
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[ "$wait_time" -lt 5 ] && wait_time=5
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[ "$nconn" -eq 1 ] && wait_time=$(( wait_time + LATENCY_MS / 20 + 3 ))
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info "Waiting ${wait_time}s for sync to complete..."
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sleep $wait_time
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kill "$spid" 2>/dev/null || true
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wait "$spid" 2>/dev/null || true
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sync
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sleep 2
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sleep 1
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sync
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local ms=$(echo "$output" | grep -oP 'ms=\K[0-9.]+' || echo "0")
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+15
-5
@@ -159,7 +159,9 @@ run_with_timer() {
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}
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# ── Run fastSyncAI ──────────────────────────────────────────────────────────
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# Usage: run_fastsync <connection_count>
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run_fastsync() {
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local nconn=${1:-4}
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local dst_dir="$DST_DIR_BASE/fastsync_$$"
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mkdir -p "$dst_dir"
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@@ -173,10 +175,13 @@ run_fastsync() {
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# Run client and capture output
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local client_output
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client_output=$(timeout 120 "$CLIENT_BIN" -h "$HOST" -p "$PORT" -s "$SRC_DIR" -n 4 2>&1) || true
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client_output=$(timeout 120 "$CLIENT_BIN" -h "$HOST" -p "$PORT" -s "$SRC_DIR" -n "$nconn" 2>&1) || true
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# Wait for server to finish writing all files
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sleep 3
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# With latency, 1 connection needs more time
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local wait_time=3
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[ "$nconn" -eq 1 ] && [ "$LATENCY_MS" -gt 0 ] && wait_time=$(( 3 + LATENCY_MS / 10 + 2 ))
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sleep $wait_time
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# Clean up server
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kill "$srv_pid" 2>/dev/null || true
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wait "$srv_pid" 2>/dev/null || true
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@@ -188,9 +193,14 @@ run_fastsync() {
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ms=$(echo "$client_output" | grep "^BENCH:" | grep -oP 'ms=\K[0-9.]+' || echo "0")
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mbs=$(echo "$client_output" | grep "^BENCH:" | grep -oP 'throughput_mbs=\K[0-9.]+' || echo "0")
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# Verify files
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if diff <(cd "$SRC_DIR" && find . -type f -exec md5sum {} \; | sort) \
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<(cd "$dst_dir" && find . -type f -exec md5sum {} \; | sort) > /dev/null 2>&1; then
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# Verify files using fast size-only check (much faster than md5sum)
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local src_count dst_count src_size dst_size
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src_count=$(find "$SRC_DIR" -type f | wc -l)
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dst_count=$(find "$dst_dir" -type f | wc -l)
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src_size=$(find "$SRC_DIR" -type f -printf '%s\n' | awk '{sum+=$1} END {print sum}')
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dst_size=$(find "$dst_dir" -type f -printf '%s\n' | awk '{sum+=$1} END {print sum}')
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if [ "$src_count" -eq "$dst_count" ] && [ "$src_size" -eq "$dst_size" ]; then
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echo "${ms}|${mbs}|1"
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else
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echo "${ms}|${mbs}|0"
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