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Merged
kyscott18 merged 3 commits into from
Oct 13, 2026
Merged

test(bench): measure single-user latency and max throughput #56

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94001f1
test(bench): measure the real execute cost and runtime throughput
kyscott18 Oct 13, 2026
3af39e3
chore: remove the stale executeMany plan
kyscott18 Oct 13, 2026
7cdcac1
test(bench): measure single-user latency and max throughput on Harness
kyscott18 Oct 13, 2026
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80 changes: 0 additions & 80 deletions packages/typewriter/PLAN_execute_many.md
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1 change: 1 addition & 0 deletions packages/typewriter/package.json
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Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,7 @@
"type": "module",
"private": true,
"scripts": {
"benchmark": "bun run --filter typewriter-evm build && bun test ./test/harness.benchmark.ts",
"test": "bun test --timeout 30000",
"typecheck": "tsc --noEmit"
},
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103 changes: 0 additions & 103 deletions packages/typewriter/test/counter.benchmark.ts
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161 changes: 57 additions & 104 deletions packages/typewriter/test/harness.benchmark.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -19,136 +19,89 @@ import {

process.env.NODE_ENV = "production";

const MUTATION_COUNT = 10_000;
const LATENCY_MUTATION_COUNT = 1_000;
const THROUGHPUT_MUTATION_COUNT = 10_000;

function harnessCreditMutation(params: {
readonly address: `0x${string}`;
readonly account: `0x${string}`;
readonly amount: bigint;
readonly nonce: bigint;
}) {
return prepareHarnessMutation({
mutation: "Credit",
params: { amount: params.amount },
accountID: params.account,
sequence: params.nonce,
keyType: 2,
privateKey: USER_PRIVATE_KEY,
address: params.address,
chainId: anvil.id,
});
}

function percentile(values: readonly number[], p: number): number {
const index = Math.min(
values.length - 1,
Math.floor((values.length - 1) * p),
);
return values[index]!;
}

function formatMs(durationMs: number): string {
return `${durationMs.toFixed(2)}ms`;
}

async function withoutConsoleOutput<T>(run: () => Promise<T>): Promise<T> {
const original = {
debug: console.debug,
error: console.error,
info: console.info,
log: console.log,
warn: console.warn,
};
const noop = () => {};

console.debug = noop;
console.error = noop;
console.info = noop;
console.log = noop;
console.warn = noop;

try {
return await run();
} finally {
console.debug = original.debug;
console.error = original.error;
console.info = original.info;
console.log = original.log;
console.warn = original.warn;
}
}

test(`harness batch accepts ${MUTATION_COUNT.toLocaleString()} mutations`, async () => {
test("harness benchmark", async () => {
const { createTypewriter } = await import("../src");
const address = await deployHarness();
const config = {
address,
account: SCHEDULER_ACCOUNT,
chainId: anvil.id,
rpcUrl: TEST_RPC_URL,
sequencing: {
order: "batch",
batchIntervalMs: 10,
submitIntervalMs: 3_600_000,
batchOrder: ["CreateAccount", "Credit"],
},
database: { url: TEST_DB_URL, maxConnections: 2 },
blockPollingIntervalMs: 3_600_000,
database: { url: TEST_DB_URL },
} as const satisfies TypewriterConfig;

const typewriter = await createTypewriter(Harness, config);

const rootPublicKey = secp256k1PublicKey(USER_ACCOUNT.address);
const account = nativeAccountID(2, rootPublicKey);

const createAccount = prepareHarnessCreateAccount({
keyType: 2,
publicKey: rootPublicKey,
privateKey: USER_PRIVATE_KEY,
address,
chainId: anvil.id,
});
await withoutConsoleOutput(() => typewriter.execute(createAccount));

const mutations = await Promise.all(
Array.from({ length: MUTATION_COUNT }, (_, index) =>
harnessCreditMutation({
address,
account,
amount: 1n,
nonce: BigInt(index),
}),
Array.from(
{ length: LATENCY_MUTATION_COUNT + THROUGHPUT_MUTATION_COUNT },
(_, index) =>
prepareHarnessMutation({
mutation: "Credit",
params: { amount: 1n },
accountID: account,
sequence: BigInt(index),
keyType: 2,
privateKey: USER_PRIVATE_KEY,
address,
chainId: anvil.id,
}),
),
);
const latencyMutations = mutations.slice(0, LATENCY_MUTATION_COUNT);
const throughputMutations = mutations.slice(LATENCY_MUTATION_COUNT);

const mutationDurationsMs = new Array<number>(MUTATION_COUNT);
const totalStart = performance.now();
// Keep the cost of Debug log formatting, but do not print the lines.
const consoleLog = console.log;
const consoleDebug = console.debug;
console.log = () => {};
console.debug = () => {};

await withoutConsoleOutput(async () => {
const promises = mutations.map(async (mutation, index) => {
const mutationStart = performance.now();
await typewriter.execute(mutation);
mutationDurationsMs[index] = performance.now() - mutationStart;
});
const latenciesMs: number[] = [];
let throughputDurationMs: number;
try {
const typewriter = await createTypewriter(Harness, config);
await typewriter.execute(createAccount);

await Promise.all(promises);
});
for (const mutation of latencyMutations) {
const start = performance.now();
await typewriter.execute(mutation);
latenciesMs.push(performance.now() - start);
}

const start = performance.now();
await Promise.all(
throughputMutations.map((mutation) => typewriter.execute(mutation)),
);
throughputDurationMs = performance.now() - start;
} finally {
console.log = consoleLog;
console.debug = consoleDebug;
}

const totalDurationMs = performance.now() - totalStart;
const sortedDurationsMs = mutationDurationsMs.toSorted((a, b) => a - b);
const averageDurationMs =
mutationDurationsMs.reduce((total, duration) => total + duration, 0) /
MUTATION_COUNT;
const mutationsPerSecond = MUTATION_COUNT / (totalDurationMs / 1_000);
latenciesMs.sort((a, b) => a - b);
const averageMs =
latenciesMs.reduce((total, latency) => total + latency, 0) /
LATENCY_MUTATION_COUNT;
const p50Ms = latenciesMs[Math.floor(LATENCY_MUTATION_COUNT * 0.5)]!;
const p99Ms = latenciesMs[Math.floor(LATENCY_MUTATION_COUNT * 0.99)]!;
const mutationsPerSecond =
THROUGHPUT_MUTATION_COUNT / (throughputDurationMs / 1_000);

console.log(`
Harness batch benchmark
mutations: ${MUTATION_COUNT.toLocaleString()}
batch window: 10ms
total: ${formatMs(totalDurationMs)}
average: ${formatMs(averageDurationMs)}
p50: ${formatMs(percentile(sortedDurationsMs, 0.5))}
p95: ${formatMs(percentile(sortedDurationsMs, 0.95))}
p99: ${formatMs(percentile(sortedDurationsMs, 0.99))}
throughput: ${mutationsPerSecond.toFixed(2)} mutations/s`);
Harness benchmark
single user, ${LATENCY_MUTATION_COUNT.toLocaleString()} sequential mutations:
average ${averageMs.toFixed(2)}ms, p50 ${p50Ms.toFixed(2)}ms, p99 ${p99Ms.toFixed(2)}ms
max throughput, ${THROUGHPUT_MUTATION_COUNT.toLocaleString()} concurrent mutations:
${Math.round(mutationsPerSecond).toLocaleString()} mutations/s`);
}, 300_000);
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