仅在 I/O 负载较低时运行线程
我有一个执行 I/O 操作的后台线程（保持索引最新）。 但除此之外，还有多个客户端访问服务器的硬盘，我希望这些访问尽可能快。 所以我想，如果索引线程只在 I/O 负载较低时运行，那就太好了。
有办法解决这个问题吗？
我也愿意接受其他建议。
I have a background thread that performs I/O operations (keeping an index up to date). But in addition to that several clients access the server's hard disk and I want these accesses as fast as possible. So I thought, it would be nice, if the indexing thread is only running when the I/O load is low.
Is there a way to figure this out?
I'm open for alternative suggestions as well.
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使用性能计数器获取磁盘的 I/O 活动。 一旦达到阈值的下限，就允许线程运行。 在决定停止阈值的高端时，不要忘记考虑您将添加的 I/O 负载。
Use Performance Counters to get the I/O activity of the disks. Once it gets to the low-end of your threshold, allow your threads to run. Don't forget to take into account your own I/O load you'll be adding when deciding what your high-end is for the stopping threshold.
将线程优先级设置为空闲应该就足够了。
编辑
您说得对，线程的优先级不会影响 IO 优先级。
看看我/ O Windows Vista 中的优先级详细说明。
Setting your threads priority to idle should be sufficient.
Edit
You are right about the fact that the thread's priority does not impact the IO priority.
Take a look at I/O Prioritization in Windows Vista for a detailed explanation.