Restrict thread priority and scheduling
The Java thread model relates to thread priorities that can be dynamically changed. Essentially, the thread priority is a number between 1 and 10, the larger the number, the more urgent task. The JVM standard first calls a higher priority thread and then calls a lower priority thread. However, this standard is randomly processed for a thread having the same priority. How to deal with these threads depends on the operating system strategy of the base layer. In some cases, the priority thread is running at time; in other cases, the thread will run until the end. Keep in mind that Java supports 10 priorities. The priority supported by the grassroots operating system may have much less, which will cause some confusion. Therefore, the priority can only be used as a very rough tool. The final control can be used in wisely
The yield () function is completed. Typically, do not rely on thread priority to control the status of the thread.
Summary This article describes how to use threads in the Java program. A more important issue like a thread should be used on a large program depends on the hand of the hand. A way to determine if multiple threads in the application is to estimate the amount of code that can run in parallel. And remember the following:
Use multithreading does not increase the capabilities of the CPU. However, if the local thread implementation of JVM is implemented, different threads can run simultaneously on different processors (in the machine in multi-CPU), so that the multi-CPU machine is fully utilized. If the application is a computing intensive and is restricted by the CPU function, only multiple CPU machines can benefit from more threads. When the application must wait for a slow resource (such as a network connection or database connection), or when the application is non-interactive, multi-threading is usually advantageous. The Internet-based software is necessary to be multi-threaded; otherwise, the user will reflect the feeling of sensation. For example, multiple threads can make programming easier when developing a server-supported server. In this case, each thread can be a different customer or customer group service, thereby shortening the response time. Some of the programmers may have used threads in C and other languages, and there is no language support for threads in those languages. These programmers may usually have to lose confidence in threads. Reference
Please read the "Java Threads" of Scott Oaks and Henry Wong to learn how to make full use of Java thread function. Find other information about the Thread class and Java 2 platforms, standard editions, API specifications. About the author Neel V. Kumar is a software engineer, he has eight years of object-oriented programming experience, and the language used is C and Java programming languages. He was born in Iowa, currently living in Menlo Park in California, just in the field of telecommunications. He used to provide a consulting service for many projects, willing to share his knowledge with others. You can contact him with Neelvk@terway.com.
