Guava 的 RateLimiter warmup 慢启动限流，在这个例子中，永远无法达到最大值，一直处于限流状态

@RestController
class HelloWorldController {
    @GetMapping("/")
    public String sayHello() {
        return "hello world";
    }

    @GetMapping("/download")
    public ResponseEntity<Resource> download() throws FileNotFoundException {
        RateLimiter rateLimiter = GuavaRateLimiter.create(52428800L, 500, TimeUnit.MILLISECONDS)
        FileInputStream in = new FileInputStream("/home/hujianxin/Downloads/officesp2010-kb2687455-fullfile-x64-en-us.exe");
        InputStreamResource resource = new InputStreamResource(new InputStream() {
            @Override
            public int read() throws IOException {
                rateLimiter.acquire();
                return in.read();
            }

            @Override
            public int read(byte[] b) throws IOException {
                rateLimiter.acquire(b.length);
                return in.read(b);
            }

            @Override
            public int read(byte[] b, int off, int len) throws IOException {
                rateLimiter.acquire(len);
                return in.read(b, off, len);
            }
        });
        return ResponseEntity.ok().body(resource);
    }
}

在这个例子中，最大值是 50MB/S，但是实际速度只有 7M/s，如果移除限流相关代码，实际速度可以达到 200MB/s

有遇到过类似问题的大佬吗？