Function quantile

packages/server/test/snapshot.perf.test.ts:66–70

(samples: readonly number[], q: number)

}

function quantile(samples: readonly number[], q: number): number {
  const sorted = [...samples].sort((a, b) => a - b);
  const idx = Math.min(sorted.length - 1, Math.floor(q * sorted.length));
  return sorted[idx]!;
}

describe('SnapshotReader perf (real HTTP, 50 sessions)', () => {
  it(`mode=${process.env['KIMI_SNAPSHOT_READER'] ?? 'auto'} p95 stays under 200ms warm`, async () => {