mirror of
https://github.com/XRPLF/rippled.git
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546 lines
19 KiB
Bash
Executable File
546 lines
19 KiB
Bash
Executable File
#!/usr/bin/env bash
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# benchmark.sh — Performance benchmark for rippled telemetry overhead.
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#
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# Runs two identical workloads against a rippled cluster:
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# 1. Baseline: telemetry disabled ([telemetry] enabled=0)
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# 2. Telemetry: full telemetry enabled (traces + StatsD + all categories)
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#
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# Compares CPU, memory, RPC latency, TPS, and consensus round time.
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# Outputs a Markdown table with pass/fail against configured thresholds.
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#
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# Usage:
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# ./benchmark.sh --xrpld /path/to/xrpld --duration 300
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#
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# Thresholds (configurable via environment variables):
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# BENCH_CPU_OVERHEAD_PCT=3 CPU overhead < 3%
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# BENCH_MEM_OVERHEAD_MB=5 Memory overhead < 5MB
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# BENCH_RPC_LATENCY_IMPACT_MS=2 RPC p99 latency impact < 2ms
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# BENCH_TPS_IMPACT_PCT=5 Throughput impact < 5%
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# BENCH_CONSENSUS_IMPACT_PCT=1 Consensus round time impact < 1%
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#
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# Exit codes:
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# 0 Every overhead metric was measured and is within its threshold.
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# 1 Every overhead metric was measured and at least one exceeded its
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# threshold. This is the only "telemetry is too expensive" signal.
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# Also returned for a command-line usage error, which the pipeline
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# cannot trigger (run-full-validation.sh passes a fixed flag list).
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# 2 The overhead could not be measured at all — a missing prerequisite, a
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# cluster that never reached consensus, or an incomplete metric
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# collection. Nothing was compared, so nothing was breached.
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#
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# run-full-validation.sh depends on that split: it folds 1 into its own
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# "checks failed" exit and 2 into its "infrastructure error" exit. Reporting a
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# run that measured nothing as a threshold breach would be a false regression.
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set -euo pipefail
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# ---------------------------------------------------------------------------
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# Colored output helpers
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# ---------------------------------------------------------------------------
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log() { printf "\033[1;34m[BENCH]\033[0m %s\n" "$*"; }
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ok() { printf "\033[1;32m[BENCH]\033[0m %s\n" "$*"; }
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warn() { printf "\033[1;33m[BENCH]\033[0m %s\n" "$*"; }
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fail() { printf "\033[1;31m[BENCH]\033[0m %s\n" "$*"; }
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# Usage error. Exit 1 by shell convention; see the exit-code block above.
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die() {
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fail "$*" >&2
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exit 1
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}
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# Fatal, and no overhead figure was produced. Exit 2 keeps exit 1 exclusively
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# for a measured threshold breach, so the caller never grades a run that
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# measured nothing as a performance regression.
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cannot_measure() {
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fail "$*" >&2
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exit 2
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}
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# ---------------------------------------------------------------------------
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# Defaults and thresholds
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# ---------------------------------------------------------------------------
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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REPO_ROOT="$(cd "$SCRIPT_DIR/../../.." && pwd)"
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# Configurable thresholds via environment variables.
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CPU_THRESHOLD="${BENCH_CPU_OVERHEAD_PCT:-3}"
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MEM_THRESHOLD="${BENCH_MEM_OVERHEAD_MB:-5}"
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RPC_THRESHOLD="${BENCH_RPC_LATENCY_IMPACT_MS:-2}"
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TPS_THRESHOLD="${BENCH_TPS_IMPACT_PCT:-5}"
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CONSENSUS_THRESHOLD="${BENCH_CONSENSUS_IMPACT_PCT:-1}"
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XRPLD="${BENCH_XRPLD:-$REPO_ROOT/.build/xrpld}"
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DURATION=300
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NUM_NODES=3
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WORKDIR="/tmp/xrpld-benchmark"
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RESULTS_DIR="$SCRIPT_DIR/benchmark-results"
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RPC_PORT_BASE=5020
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PEER_PORT_BASE=51250
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# ---------------------------------------------------------------------------
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# Argument parsing
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# ---------------------------------------------------------------------------
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usage() {
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echo "Usage: $0 [OPTIONS]"
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echo ""
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echo "Options:"
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echo " --xrpld PATH Path to xrpld binary (default: \$REPO_ROOT/.build/xrpld)"
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echo " --duration SECS Benchmark duration per run (default: 300)"
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echo " --nodes NUM Number of validator nodes (default: 3)"
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echo " --output DIR Results output directory"
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echo " -h, --help Show this help"
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exit 0
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}
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while [ $# -gt 0 ]; do
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case "$1" in
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--xrpld)
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XRPLD="$2"
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shift 2
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;;
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--duration)
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DURATION="$2"
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shift 2
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;;
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--nodes)
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NUM_NODES="$2"
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shift 2
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;;
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--output)
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RESULTS_DIR="$2"
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shift 2
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;;
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-h | --help) usage ;;
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*) die "Unknown option: $1" ;;
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esac
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done
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# Validate prerequisites. A missing binary or tool means no measurement can be
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# taken, which is "cannot measure", not "too slow".
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[ -x "$XRPLD" ] || cannot_measure "xrpld not found at $XRPLD"
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command -v jq >/dev/null 2>&1 || cannot_measure "jq not found"
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command -v bc >/dev/null 2>&1 || cannot_measure "bc not found"
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command -v curl >/dev/null 2>&1 || cannot_measure "curl not found"
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mkdir -p "$RESULTS_DIR"
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TIMESTAMP=$(date +%Y%m%d_%H%M%S)
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# ---------------------------------------------------------------------------
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# Node cluster management
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# ---------------------------------------------------------------------------
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# True while xrpld children spawned by start_cluster may still be alive.
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# Read by stop_cluster so it can be called any number of times.
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CLUSTER_RUNNING=false
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start_cluster() {
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local telemetry_enabled="$1"
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local label="$2"
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log "Starting $NUM_NODES-node cluster ($label, telemetry=$telemetry_enabled)..."
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rm -rf "$WORKDIR"
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mkdir -p "$WORKDIR"
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# Generate keys using first node.
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bash "$SCRIPT_DIR/generate-validator-keys.sh" "$XRPLD" "$NUM_NODES" "$WORKDIR"
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# Set before the spawn loop so a failure part-way through it still gets
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# cleaned up by the EXIT trap.
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CLUSTER_RUNNING=true
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# Build per-node configs.
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for i in $(seq 1 "$NUM_NODES"); do
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local node_dir="$WORKDIR/node$i"
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mkdir -p "$node_dir/nudb" "$node_dir/db"
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local rpc_port
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rpc_port=$((RPC_PORT_BASE + i - 1))
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local peer_port
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peer_port=$((PEER_PORT_BASE + i - 1))
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local seed
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seed=$(jq -r ".[$((i - 1))].seed" "$WORKDIR/validator-keys.json")
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# Build ips_fixed list.
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local ips_fixed=""
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for j in $(seq 1 "$NUM_NODES"); do
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if [ "$j" -ne "$i" ]; then
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ips_fixed="${ips_fixed}127.0.0.1 $((PEER_PORT_BASE + j - 1))
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"
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fi
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done
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# Build telemetry section.
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local telemetry_section=""
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if [ "$telemetry_enabled" = "1" ]; then
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telemetry_section="
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[telemetry]
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enabled=1
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service_instance_id=bench-node-${i}
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endpoint=http://localhost:4318/v1/traces
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exporter=otlp_http
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batch_size=512
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batch_delay_ms=2000
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max_queue_size=2048
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trace_rpc=1
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trace_transactions=1
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trace_consensus=1
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trace_peer=1
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trace_ledger=1
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[insight]
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# No prefix is set on purpose: OTelCollector applies no prefix to instrument
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# names, so setting one here would be inert. Same reasoning as
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# run-full-validation.sh.
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server=otel
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endpoint=http://localhost:4318/v1/metrics"
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else
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telemetry_section="
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[telemetry]
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enabled=0"
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fi
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cat >"$node_dir/xrpld.cfg" <<EOCFG
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[server]
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port_rpc
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port_peer
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[port_rpc]
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port = $rpc_port
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ip = 127.0.0.1
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admin = 127.0.0.1
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protocol = http
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[port_peer]
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port = $peer_port
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ip = 0.0.0.0
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protocol = peer
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[node_db]
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type=NuDB
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path=$node_dir/nudb
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online_delete=256
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[database_path]
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$node_dir/db
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[debug_logfile]
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$node_dir/debug.log
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[validation_seed]
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$seed
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[validators_file]
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$WORKDIR/validators.txt
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[ips_fixed]
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${ips_fixed}
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[peer_private]
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1
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${telemetry_section}
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[rpc_startup]
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# The log level deliberately diverges from run-full-validation.sh, which uses
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# info. This script measures telemetry OVERHEAD as the delta
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# between a telemetry-off and a telemetry-on arm, so it needs a quiet, identical
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# baseline in both arms rather than good observability. Logging is synchronous, so
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# admitting more log lines would add I/O to both arms and inflate the CPU,
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# memory and latency figures the thresholds gate. Do not "align" this with the
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# workload harness -- that would silently degrade the measurement.
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{ "command": "log_level", "severity": "warning" }
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[ssl_verify]
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0
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EOCFG
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"$XRPLD" --conf "$node_dir/xrpld.cfg" --start >"$node_dir/stdout.log" 2>&1 &
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echo $! >"$node_dir/xrpld.pid"
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done
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# Wait for consensus. Reaching the limit is fatal: numbers taken from a
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# cluster that never got to "proposing" would silently corrupt the
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# baseline-vs-telemetry comparison.
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local max_wait=120
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log "Waiting for consensus (up to ${max_wait}s)..."
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for attempt in $(seq 1 "$max_wait"); do
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local ready=0
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for i in $(seq 1 "$NUM_NODES"); do
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local port
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port=$((RPC_PORT_BASE + i - 1))
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local state
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state=$(curl -sf "http://localhost:$port" \
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-d '{"method":"server_info"}' 2>/dev/null |
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jq -r '.result.info.server_state' 2>/dev/null || echo "")
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if [ "$state" = "proposing" ]; then
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ready=$((ready + 1))
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fi
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done
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if [ "$ready" -ge "$NUM_NODES" ]; then
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ok "All $NUM_NODES nodes proposing (attempt $attempt)"
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break
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fi
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if [ "$attempt" -eq "$max_wait" ]; then
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cannot_measure "Consensus timeout — only $ready/$NUM_NODES nodes proposing after ${max_wait}s"
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fi
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sleep 1
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done
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# Let the cluster stabilize.
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sleep 5
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}
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stop_cluster() {
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# Idempotent. The happy path calls this directly and the EXIT trap calls
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# it again, so a second call must not re-kill or log a misleading message.
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[ "$CLUSTER_RUNNING" = true ] || return 0
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CLUSTER_RUNNING=false
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log "Stopping cluster..."
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for i in $(seq 1 "$NUM_NODES"); do
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local pidfile="$WORKDIR/node$i/xrpld.pid"
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if [ -f "$pidfile" ]; then
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kill "$(cat "$pidfile")" 2>/dev/null || true
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fi
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done
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# Belt and braces for a node whose pidfile is missing or stale. Matched on
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# the per-node config path — the shape start_cluster launches nodes with
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# (`--conf $WORKDIR/nodeN/xrpld.cfg`) — rather than on the workdir alone.
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# The loose form killed anything whose command line merely mentioned the
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# workdir, including a developer's `tail -f $WORKDIR/node1/debug.log`, and
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# the EXIT trap now makes this run on every exit path.
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pkill -f "$WORKDIR/node[0-9]+/xrpld\.cfg" 2>/dev/null || true
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# Guarded on purpose. This runs as the EXIT trap, where any unguarded
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# failure makes `set -e` exit with that command's status and discard the
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# status the script meant to report — a threshold breach would surface as
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# a plain 1 and "cannot measure" would lose its 2. With every command here
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# guarded, the explicit `return 0` below is reachable and authoritative.
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sleep 3 || true
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return 0
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}
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# Reap the cluster on every exit path. Installed here rather than straight
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# after argument parsing so the handler name always resolves. Without it, any
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# failure between start_cluster and stop_cluster leaks the xrpld children
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# along with their RPC ports (5020+) and peer ports (51250+).
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trap stop_cluster EXIT
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# Build RPC ports CSV string.
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rpc_ports_csv() {
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local ports=""
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for i in $(seq 1 "$NUM_NODES"); do
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[ -n "$ports" ] && ports="$ports,"
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ports="$ports$((RPC_PORT_BASE + i - 1))"
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done
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echo "$ports"
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}
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# Collects one leg of the benchmark.
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#
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# The collector exits non-zero when it cannot run (1) or when a measurement
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# source came back empty (3). An all-zero or partial sample set clears every
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# threshold, so an incomplete leg aborts with "cannot measure" instead of being
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# compared and passed.
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collect_metrics() {
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local label="$1"
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local out_file="$2"
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local status=0
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bash "$SCRIPT_DIR/collect_system_metrics.sh" \
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"$(rpc_ports_csv)" "$DURATION" "$out_file" || status=$?
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[ "$status" -eq 0 ] ||
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cannot_measure "$label metric collection failed (exit $status) — refusing to compare an incomplete run"
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# Only an explicit false counts. The flag is absent from older artifacts,
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# and jq's "//" operator would turn a real false into the default.
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local complete
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complete=$(jq -r '.metrics_complete' "$out_file" 2>/dev/null || echo "null")
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[ "$complete" != "false" ] ||
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cannot_measure "$label metrics are flagged incomplete — refusing to compare an incomplete run"
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}
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# ---------------------------------------------------------------------------
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# Run benchmark
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# ---------------------------------------------------------------------------
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log "="
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log " rippled Telemetry Performance Benchmark"
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log " Nodes: $NUM_NODES | Duration: ${DURATION}s | Binary: $XRPLD"
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log "="
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# --- Baseline run ---
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BASELINE_FILE="$RESULTS_DIR/baseline-${TIMESTAMP}.json"
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start_cluster "0" "baseline"
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collect_metrics "baseline" "$BASELINE_FILE"
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stop_cluster
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# --- Telemetry run ---
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TELEMETRY_FILE="$RESULTS_DIR/telemetry-${TIMESTAMP}.json"
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start_cluster "1" "telemetry"
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collect_metrics "telemetry" "$TELEMETRY_FILE"
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stop_cluster
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# ---------------------------------------------------------------------------
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# Compare results
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# ---------------------------------------------------------------------------
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log "Comparing results..."
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# Written into an impact variable when its baseline could not be used.
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# check_threshold turns this into an INCONCLUSIVE verdict.
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INCONCLUSIVE="n/a"
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read_metric() {
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local file="$1"
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local key="$2"
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jq -r ".$key // 0" "$file"
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}
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BASE_CPU=$(read_metric "$BASELINE_FILE" "cpu_pct_avg")
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TELE_CPU=$(read_metric "$TELEMETRY_FILE" "cpu_pct_avg")
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CPU_DELTA=$(echo "scale=2; $TELE_CPU - $BASE_CPU" | bc 2>/dev/null || echo "0")
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BASE_MEM=$(read_metric "$BASELINE_FILE" "memory_rss_mb_peak")
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TELE_MEM=$(read_metric "$TELEMETRY_FILE" "memory_rss_mb_peak")
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MEM_DELTA=$(echo "scale=2; $TELE_MEM - $BASE_MEM" | bc 2>/dev/null || echo "0")
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BASE_RPC=$(read_metric "$BASELINE_FILE" "rpc_p99_ms")
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TELE_RPC=$(read_metric "$TELEMETRY_FILE" "rpc_p99_ms")
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RPC_DELTA=$(echo "scale=2; $TELE_RPC - $BASE_RPC" | bc 2>/dev/null || echo "0")
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# Both impacts below are ratios of the baseline, so a non-positive baseline
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# leaves them undefined. The collector writes tps=0 whenever no ledger
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# advanced and read_metric defaults a missing key to 0, so this is a routine
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# outcome rather than an edge case. Reporting it as "0% impact" would clear
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# the threshold and hide a failed baseline run.
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#
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# Both expressions scale by 100 before dividing. bc truncates at "scale" after
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# every operation, so dividing first would floor the ratio to 2 decimals and
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# then multiply the lost precision by 100 — a real 1.25% consensus impact came
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# out as exactly 1.00 and passed the 1% threshold.
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BASE_TPS=$(read_metric "$BASELINE_FILE" "tps")
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TELE_TPS=$(read_metric "$TELEMETRY_FILE" "tps")
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if [[ "$(echo "$BASE_TPS > 0" | bc 2>/dev/null)" = "1" ]]; then
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TPS_IMPACT=$(echo "scale=2; ($BASE_TPS - $TELE_TPS) * 100 / $BASE_TPS" | bc 2>/dev/null || echo "0")
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else
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TPS_IMPACT="$INCONCLUSIVE"
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fi
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BASE_CONS=$(read_metric "$BASELINE_FILE" "consensus_round_mean_ms")
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TELE_CONS=$(read_metric "$TELEMETRY_FILE" "consensus_round_mean_ms")
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if [[ "$(echo "$BASE_CONS > 0" | bc 2>/dev/null)" = "1" ]]; then
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CONS_IMPACT=$(echo "scale=2; ($TELE_CONS - $BASE_CONS) * 100 / $BASE_CONS" | bc 2>/dev/null || echo "0")
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else
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CONS_IMPACT="$INCONCLUSIVE"
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fi
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# ---------------------------------------------------------------------------
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# Pass/fail checks
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# ---------------------------------------------------------------------------
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PASS_COUNT=0
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FAIL_COUNT=0
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INCONCLUSIVE_COUNT=0
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# Records the verdict for one row of the report.
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#
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# Arguments: metric name, measured value, threshold, unit, and the name of the
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# variable to write the bare verdict into.
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#
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# The verdict travels through that named variable and every diagnostic goes to
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# stderr. Calling this through a command substitution would run it in a
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# subshell, which drops the counter updates and captures the colored log line
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# into the caller's variable.
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check_threshold() {
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local name="$1"
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local actual="$2"
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local threshold="$3"
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local unit="$4"
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local result_var="$5"
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# Unusable measurement. Counted as a failure so the exit gate fires: an
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# undefined result must never read as a pass.
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if [ "$actual" = "$INCONCLUSIVE" ]; then
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fail "$name: INCONCLUSIVE — baseline was zero or missing" >&2
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FAIL_COUNT=$((FAIL_COUNT + 1))
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INCONCLUSIVE_COUNT=$((INCONCLUSIVE_COUNT + 1))
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printf -v "$result_var" 'INCONCLUSIVE'
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return
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fi
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# Compare: actual <= threshold
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if [[ "$(echo "$actual <= $threshold" | bc 2>/dev/null)" = "1" ]]; then
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ok "$name: ${actual}${unit} <= ${threshold}${unit} PASS" >&2
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PASS_COUNT=$((PASS_COUNT + 1))
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printf -v "$result_var" 'PASS'
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else
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fail "$name: ${actual}${unit} > ${threshold}${unit} FAIL" >&2
|
|
FAIL_COUNT=$((FAIL_COUNT + 1))
|
|
printf -v "$result_var" 'FAIL'
|
|
fi
|
|
}
|
|
|
|
# Formats a delta for the report table: appends the unit to a real number and
|
|
# leaves the INCONCLUSIVE placeholder bare.
|
|
fmt_delta() {
|
|
local value="$1"
|
|
local unit="$2"
|
|
if [ "$value" = "$INCONCLUSIVE" ]; then
|
|
printf '%s' "$value"
|
|
else
|
|
printf '%s%s' "$value" "$unit"
|
|
fi
|
|
}
|
|
|
|
check_threshold "CPU overhead" "$CPU_DELTA" "$CPU_THRESHOLD" "%" CPU_RESULT
|
|
check_threshold "Memory overhead" "$MEM_DELTA" "$MEM_THRESHOLD" "MB" MEM_RESULT
|
|
check_threshold "RPC p99 impact" "$RPC_DELTA" "$RPC_THRESHOLD" "ms" RPC_RESULT
|
|
check_threshold "TPS impact" "$TPS_IMPACT" "$TPS_THRESHOLD" "%" TPS_RESULT
|
|
check_threshold "Consensus impact" "$CONS_IMPACT" "$CONSENSUS_THRESHOLD" "%" CONS_RESULT
|
|
|
|
# ---------------------------------------------------------------------------
|
|
# Output Markdown table
|
|
# ---------------------------------------------------------------------------
|
|
REPORT_FILE="$RESULTS_DIR/benchmark-report-${TIMESTAMP}.md"
|
|
|
|
cat >"$REPORT_FILE" <<EOMD
|
|
# Telemetry Performance Benchmark Report
|
|
|
|
**Date**: $(date -u +"%Y-%m-%d %H:%M:%S UTC")
|
|
**Nodes**: $NUM_NODES | **Duration**: ${DURATION}s per run
|
|
**Binary**: $XRPLD
|
|
|
|
## Results
|
|
|
|
| Metric | Baseline | Telemetry | Delta | Threshold | Result |
|
|
|--------|----------|-----------|-------|-----------|--------|
|
|
| CPU (avg %) | ${BASE_CPU}% | ${TELE_CPU}% | ${CPU_DELTA}% | < ${CPU_THRESHOLD}% | ${CPU_RESULT} |
|
|
| Memory RSS (peak MB) | ${BASE_MEM} MB | ${TELE_MEM} MB | ${MEM_DELTA} MB | < ${MEM_THRESHOLD} MB | ${MEM_RESULT} |
|
|
| RPC p99 Latency (ms) | ${BASE_RPC} ms | ${TELE_RPC} ms | ${RPC_DELTA} ms | < ${RPC_THRESHOLD} ms | ${RPC_RESULT} |
|
|
| Throughput (TPS) | ${BASE_TPS} | ${TELE_TPS} | $(fmt_delta "$TPS_IMPACT" "%") | < ${TPS_THRESHOLD}% | ${TPS_RESULT} |
|
|
| Consensus Round Mean (ms) | ${BASE_CONS} ms | ${TELE_CONS} ms | $(fmt_delta "$CONS_IMPACT" "%") | < ${CONSENSUS_THRESHOLD}% | ${CONS_RESULT} |
|
|
|
|
\`INCONCLUSIVE\` means the baseline for that row was zero or missing, so the
|
|
impact could not be computed. Such rows count as failures.
|
|
|
|
\`Consensus Round Mean\` is the mean inter-ledger interval derived from the
|
|
collector's 5 s ledger-sequence samples, not a percentile.
|
|
|
|
## Summary
|
|
|
|
- **Passed**: $PASS_COUNT / $((PASS_COUNT + FAIL_COUNT))
|
|
- **Failed**: $FAIL_COUNT / $((PASS_COUNT + FAIL_COUNT))
|
|
- **Inconclusive**: $INCONCLUSIVE_COUNT (included in Failed)
|
|
|
|
## Raw Data
|
|
|
|
- Baseline: \`$(basename "$BASELINE_FILE")\`
|
|
- Telemetry: \`$(basename "$TELEMETRY_FILE")\`
|
|
EOMD
|
|
|
|
ok "Benchmark report written to $REPORT_FILE"
|
|
cat "$REPORT_FILE"
|
|
|
|
# Exit with failure if any check failed.
|
|
if [ "$FAIL_COUNT" -gt 0 ]; then
|
|
exit 1
|
|
fi
|