pool slippers

Reprint Source:http://www.cnblogs.com/dolphin0520/p/3932921.html In the previous article, we created a thread when we used the thread, so it was easy to implement, but there was a problem: If you have a large number of concurrent threads, and each thread is finished with a short task, creating a thread frequently can greatly reduce the efficiency of the system because it takes time to create threads and destroy threads frequently. So is there a way to make threads reusable, to perform one task,

[Switch] thread pool introduction under JUC, juc Thread Pool IntroductionDisadvantages andJavaUse of four thread poolsWhich is also applicable to Android. This article is a basic article. Later I will share some advanced features of the thread pool. 1. disadvantages of new ThreadDo you still have the following new Thread to execute an asynchronous task? new Threa

Commondef.h Copy Code code as follows: Unit seconds, monitoring the idle list time interval, the task that exceeds Task_destroy_interval time in the idle queue will be automatically destroyed const int check_idle_task_interval = 300; Unit seconds, Task automatic destroy time interval const int task_destroy_interval = 60; Monitor thread pool for empty intervals, microsecondsconst int idle_check_poll_empty = 500; Thread

Http://teamojiao.iteye.com/blog/456851 I recently came into contact with the connection pool and Object pool technology in the optimization of an internal test tool class. I changed the original database access operations not using the connection pool to the connection pool method. the performance has been greatly impr

the mechanism of thread operation 1. Too many threads will consume CPU 2. Single-core CPUs, only one thread at a time, multi-core CPUs can handle multiple threads at the same time 3. The operating system for each running thread to schedule a certain amount of CPU time----' time slice ', the system through a circular way for the thread to provide a time slice, the thread in its own time to run, because the time is quite short, multiple threads frequently switch, so the user feels

Implementation Scenario One: 1 the task in the frequency H1 (30 seconds) timing, the frequency of the task to perform the time required to exceed the frequency of the time period (30 seconds), the frequency of the task has not been completed, the next execution of the task Midway interrupted; 2 The second 30 second time node (that is, the next frequency) when scheduling tasks, because there is no idle thread (the previous frequency task takes up all the threads), there is a large number of threa

Thread Pool learning and thread pool Creating a New thread and starting it will incur a high overhead, because the running thread requires more resources than calling the object method. In many cases, threads are used to execute a type of task, which has a large number of tasks and the time distribution is uneven. If a new thread is enabled for each new task, the overhead is too large. A performance optimiz

Related Articles Directory:java thread pool threadpoolexecutor usage and analysis (i)java thread pool threadpoolexecutor usage and Analysis (ii)-execute () principlejava thread pool threadpoolexecutor usage and Analysis (iii)-Termination thread pool principleThe following is the directory outline for this article:One,

OverviewIn the previous chapter, "Java Multithreading Series--" Juc thread pool "02 Thread pool principle (a)" describes the data structure of the thread pool, this chapter will be analyzed through the source code of the threads pools, to explain the threading pooling. The content includes:Line Pooling ExampleReference code (based on JDK1.7.0_40)Line Cheng Code A

From usage to principle learning Java thread pool, principle java Thread PoolSource: technical background of SilenceDuthttp: // www.codeceo.com/article/java-threadpool-learn.htmlthread pool In object-oriented programming, it takes a lot of time to create and destroy objects, because creating an object requires obtaining memory resources or other resources. Even more so in Java, virtual machines will try to

[Java concurrent programming] 7. Thread Pool and java concurrent Thread Pool1.Why use Thread Pool Many server applications, such as Web servers, database servers, file servers, or email servers, are designed to process a large number of short tasks from some remote sources. Requests arrive at the server in a certain way, which may be through the network protocol (such as HTTP, FTP, or POP), through the JMS

12. ThreadPoolExecutor thread pool Principle and Its execute method, thread pool executesubmit Jdk1.7.0 _ 79 Most people may use the thread pool, and they also know why. This is nothing more than the asynchronous execution of tasks, and the unified management of threads. Most people may only know how to get a thread from the thread

Python process pool: multiprocessing. pool, This article goes to workshop. When using Python for system management, especially operating multiple file directories at the same time, or remotely controlling multiple hosts, parallel operations can save a lot of time. When the number of objects to be operated is small, you can use the Process in multiprocessing to dynamically generate multiple processes. A doze

The memory pool can effectively reduce the number of dynamic memory requests, reduce interaction with the kernel state, improve system performance, reduce memory fragments, increase memory space usage, and avoid Memory leakage, there is no reason not to use this technology in the system for so many advantages. Memory Pool category: 1. Unlimited memory pool. Typic

Independent Thread Pool As we discussed last time, there is a CLR thread pool in A. NET application. You can use the static method in the ThreadPool class to use this thread pool. We only need to use the QueueUserWorkItem method to add tasks to the thread pool, and the thread pool