将多个线程与 RandomAccessFile 一起使用是否有助于提高性能? [英] Will using multiple threads with a RandomAccessFile help performance?

问题描述

我正在处理一个(数据库类)项目，其中数据存储在一个平面文件中.对于读/写，我使用 RandomAccessFile 类.我会从多线程中获得什么，并为每个线程提供一个 RandomAccessFile 的实例，还是一个线程/实例的速度也一样快?读/写有什么区别，因为你可以制作只能读而不能写的实例?

I am working on a (database-ish) project, where data is stored in a flat file. For reading/writing I'm using the RandomAccessFile class. Will I gain anything from multithreading, and giving each thread an instance each of RandomAccessFile, or will one thread/instance be just as fast? Is there any difference in reading/writing, as you can make instances that only do the reading, and can't write?

推荐答案

一个相当常见的问题.基本上使用多线程不会使您的硬盘驱动器运行得更快.相反，执行并发请求可能会使其变慢.

A fairly common question. Basically using multiple threads will not make your hard drive go any faster. Instead performing concurrent request can make it slower.

磁盘子系统，尤其是 IDE、EIDE、SATA，旨在实现最快的顺序读/写.

Disk subsystems, esp IDE, EIDE, SATA, are designed to read/write sequentially fastest.

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