我正在尝试为千分尺构建一个自定义的量规，它应该监视自定义的ThreadPoolTaskExecutor。问题是量规值保持不变，并且自应用程序启动以来从未更新过。但是，执行程序统计信息（可以在调试器中看到）显示了变化的值。
这是我的类与 Jmeter 配置。

@Component
public class ThreadPoolMetricProbe implements MeterBinder {

@Inject
private Executor taskExecutor;

@Override
public void bindTo(MeterRegistry meterRegistry) {
    ThreadPoolTaskExecutor exec = (ThreadPoolTaskExecutor) taskExecutor;

    long completedTaskCount = exec.getThreadPoolExecutor().getCompletedTaskCount();
    int largestPoolSize = exec.getThreadPoolExecutor().getLargestPoolSize();
    int maximumPoolSize = exec.getThreadPoolExecutor().getMaximumPoolSize();
    int poolSize = exec.getThreadPoolExecutor().getPoolSize();
    long taskCount = exec.getThreadPoolExecutor().getTaskCount();
    int activeCount = exec.getThreadPoolExecutor().getActiveCount();

    String threadNamePrefix = exec.getThreadNamePrefix();

    Gauge.builder("executorCompletedTaskCount", completedTaskCount, Double::new)
            .description(String.format("Returns the approximate total number of tasks that have completed execution of %s executor", threadNamePrefix.toLowerCase()))
            .register(meterRegistry);

    Gauge.builder("executorLargestThreadsNumber", largestPoolSize, Double::new)
            .description(String.format(" Returns the largest number of threads that have ever simultaneously been in the pool of %s executor", threadNamePrefix.toLowerCase()))
            .register(meterRegistry);

    Gauge.builder("executorMaximumAllowedThreadsNumber", maximumPoolSize, Double::new)
            .description(String.format("Returns the maximum allowed number of threads of %s executor", threadNamePrefix.toLowerCase()))
            .register(meterRegistry);

    Gauge.builder("executorCurrentNumberOfThreads", poolSize, Double::new)
            .description(String.format("Returns the current number of threads in the %s executor pool", threadNamePrefix.toLowerCase()))
            .register(meterRegistry);

    Gauge.builder("executorTotalTaskCount", taskCount, Double::new)
            .description(String.format(" Returns the approximate total number of tasks that have ever been scheduled for execution by %s executor", threadNamePrefix.toLowerCase()))
            .register(meterRegistry);

    Gauge.builder("executorActiveThreadsCount", activeCount, Double::new)
            .description(String.format("Returns the approximate number of threads that are actively executing tasks by %s executor", threadNamePrefix.toLowerCase()))
            .register(meterRegistry);

    Metrics.addRegistry(meterRegistry);

}

@Scheduled(fixedDelay = 5000)
public void measure(){
    Metrics.gauge("executorCompletedTaskCount",((ThreadPoolTaskExecutor) taskExecutor).getThreadPoolExecutor().getCompletedTaskCount());
    Metrics.gauge("executorTotalTaskCount",((ThreadPoolTaskExecutor) taskExecutor).getThreadPoolExecutor().getTaskCount());
    Metrics.gauge("executorCurrentNumberOfThreads",((ThreadPoolTaskExecutor) taskExecutor).getThreadPoolExecutor().getPoolSize());
   }
}

我在这里注册了几个 Jmeter ，并希望他们被更新一次，每次请求或...方法措施是我最后一次尝试找到正确的方法来监测和更新值。
所以问题是：

1. Jmeter 是否自动更新？如果是-多久更新一次？
   1.如果 Jmeter 不能自动更新-那么如何正确更新它们？
   1.量规是否是此类测量的正确对象？AFAIK I无法使用计数器，因为某些值可能会递减。
   1.在创建所有量表之后，我需要执行Metrics.addRegistry（meterRegistry）吗？