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opencode v2 mirror
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TypeScript
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173#!/usr/bin/env bun
import { mkdir } from "fs/promises"import path from "path"
if (process.platform !== "darwin") throw new Error("System typecheck profiling currently supports macOS only")
const root = path.resolve(import.meta.dir, "..")const startedAt = new Date()const args = Bun.argv.slice(2)const command = [ "bun", "turbo", "typecheck", ...(args.some((arg) => arg.startsWith("--concurrency")) ? [] : ["--concurrency=3"]), ...args,]const before = systemSnapshot()const proc = Bun.spawn(command, { cwd: root, stdin: "inherit", stdout: "inherit", stderr: "inherit",})const samples = [processTreeSnapshot(proc.pid, startedAt)]const timer = setInterval(() => samples.push(processTreeSnapshot(proc.pid, startedAt)), 200)const exitCode = await proc.exitedclearInterval(timer)samples.push(processTreeSnapshot(proc.pid, startedAt))
const finishedAt = new Date()const after = systemSnapshot()const active = samples.filter((sample) => sample.processes > 0)const report = { command, cwd: root, startedAt: startedAt.toISOString(), finishedAt: finishedAt.toISOString(), durationSeconds: (finishedAt.getTime() - startedAt.getTime()) / 1000, exitCode, summary: { peakCpuPercent: Math.max(0, ...active.map((sample) => sample.cpuPercent)), averageCpuPercent: average(active.map((sample) => sample.cpuPercent)), peakAggregateRssMB: Math.max(0, ...active.map((sample) => sample.aggregateRssMB)), peakProcesses: Math.max(0, ...active.map((sample) => sample.processes)), peakTsgoRelatedProcesses: Math.max(0, ...active.map((sample) => sample.tsgoRelatedProcesses)), swapDeltaMB: after.swapUsedMB - before.swapUsedMB, compressedMemoryDeltaMB: after.compressedMemoryMB - before.compressedMemoryMB, pageoutDelta: after.pageouts - before.pageouts, }, system: { before, after }, samples,}
const directory = path.join(root, ".typecheck-profiles")const file = path.join(directory, `${startedAt.toISOString().replaceAll(":", "-")}.json`)await mkdir(directory, { recursive: true })await Bun.write(file, JSON.stringify(report, null, 2) + "\n")
console.log(`Typecheck profile Duration: ${report.durationSeconds.toFixed(1)}s Average CPU: ${report.summary.averageCpuPercent.toFixed(0)}% Peak CPU: ${report.summary.peakCpuPercent.toFixed(0)}% Aggregate RSS: ${report.summary.peakAggregateRssMB.toFixed(0)} MB Peak processes: ${report.summary.peakProcesses} (${report.summary.peakTsgoRelatedProcesses} tsgo-related) Swap delta: ${signed(report.summary.swapDeltaMB)} MB Compressed: ${signed(report.summary.compressedMemoryDeltaMB)} MB Pageouts: ${signed(report.summary.pageoutDelta)} Report: ${path.relative(root, file)}`)
process.exit(exitCode)
function processTreeSnapshot(rootPID: number, startedAt: Date) { const processes = processList() const pids = new Set([rootPID]) const pending = [rootPID] while (pending.length > 0) { const parent = pending.shift() processes .filter((process) => process.ppid === parent && !pids.has(process.pid)) .forEach((process) => { pids.add(process.pid) pending.push(process.pid) }) } const tree = processes.filter((process) => pids.has(process.pid)) return { elapsedSeconds: (Date.now() - startedAt.getTime()) / 1000, processes: tree.length, tsgoRelatedProcesses: tree.filter((process) => /\btsgo\b/.test(process.command)).length, cpuPercent: sum(tree.map((process) => process.cpuPercent)), aggregateRssMB: sum(tree.map((process) => process.rssKB)) / 1024, }}
function systemSnapshot() { const vm = text(["vm_stat"]) const pageSize = Number(vm.match(/page size of (\d+) bytes/)?.[1] ?? 4096) const fields = Object.fromEntries( vm .split("\n") .map((line) => line.match(/^([^:]+):\s+(\d+)\.?$/)) .filter((match): match is RegExpMatchArray => match !== null) .map((match) => [match[1], Number(match[2])]), ) const swap = text(["sysctl", "-n", "vm.swapusage"]) return { loadAverage: text(["sysctl", "-n", "vm.loadavg"]).trim(), thermalState: text(["pmset", "-g", "therm"]).trim(), swapUsedMB: Number(swap.match(/used = ([\d.]+)M/)?.[1] ?? 0), freeMemoryMB: ((fields["Pages free"] ?? 0) * pageSize) / 1024 / 1024, compressedMemoryMB: ((fields["Pages occupied by compressor"] ?? 0) * pageSize) / 1024 / 1024, pageouts: fields.Pageouts ?? 0, relevantProcesses: processList() .filter((process) => /opencode|tsgo|tsserver|vtsls|eslintServer|tailwindcss-language-server/.test(process.command), ) .sort((a, b) => b.rssKB - a.rssKB) .map(processSummary), topCpuProcesses: processList() .sort((a, b) => b.cpuPercent - a.cpuPercent) .slice(0, 15) .map(processSummary), topMemoryProcesses: processList() .sort((a, b) => b.rssKB - a.rssKB) .slice(0, 15) .map(processSummary), }}
function processSummary(process: ReturnType<typeof processList>[number]) { return { pid: process.pid, ppid: process.ppid, rssMB: process.rssKB / 1024, cpuPercent: process.cpuPercent, command: process.command, }}
function processList() { return text(["ps", "-axo", "pid=,ppid=,rss=,%cpu=,command="]) .split("\n") .map((line) => line.trim().match(/^(\d+)\s+(\d+)\s+(\d+)\s+([\d.]+)\s+(.*)$/)) .filter((match): match is RegExpMatchArray => match !== null) .map((match) => ({ pid: Number(match[1]), ppid: Number(match[2]), rssKB: Number(match[3]), cpuPercent: Number(match[4]), command: match[5], }))}
function text(command: string[]) { return Bun.spawnSync(command).stdout.toString()}
function sum(values: number[]) { return values.reduce((total, value) => total + value, 0)}
function average(values: number[]) { if (values.length === 0) return 0 return sum(values) / values.length}
function signed(value: number) { return `${value >= 0 ? "+" : ""}${value.toFixed(0)}`}