threadpool | 易学教程

boost::asio threadpool vs. io_service_per_cpu design

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问题 Currently I´m not sure, I try to make a high-performance server, I got a 6Core CPU, so if I would use the "io_service_per_cpu" design, I have 6 io_service´s. I already heard that the threadpool design isn´t the best one, but I´m not sure about that. What knowledge do you have? Someone already made a Stress test with each, or something else? 回答1: In my experience it is vastly easier to approach asynchronous application design with the following order: single thread and a single io_service

boost::asio threadpool vs. io_service_per_cpu design

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Naming threads and thread-pools of ExecutorService

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问题 Let's say I have an application that utilizes the Executor framework as such Executors.newSingleThreadExecutor().submit(new Runnable(){ @Override public void run(){ // do stuff } } When I run this application in the debugger, a thread is created with the following (default) name: Thread[pool-1-thread-1] . As you can see, this isn't terribly useful and as far as I can tell, the Executor framework does not provide an easy way to name the created threads or thread-pools. So, how does one go

Stopping only one thread [closed]

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问题 It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. Closed 7 years ago . I have many threads in my application, how do I stop only one thread from them? If I use Thread.Sleep() it stops the whole application, I just want to stop a single thread. How do I do that? I am using c#. 回答1:

ScheduledExecutorService - Ignore already running runnable

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问题 I'm using a scheduled executor service private ScheduledExecutorService pool = new ScheduledThreadPoolExecutor(1); running a runnable at fixed rate pool.scheduleAtFixedRate(new CoolRunnable(), 10, 10, TimeUnit.MILLISECONDS); This thread pool waits that the previous execution finishes, but i'd like it to run the runnable every 10 milliseconds no matter whether the previous is done or not. How can I do that? EDIT: Fixed the problem replacing the MySQL connection with a connection pool. The

java线程池ThreadPoolExecutor类使用详解

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【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 构造函数的参数含义： corePoolSize :指定了线程池中的线程数量，它的数量决定了添加的任务是开辟新的线程去执行，还是放到 workQueue 任务队列中去； maximumPoolSize :指定了线程池中的最大线程数量，这个参数会根据你使用的 workQueue 任务队列的类型，决定线程池会开辟的最大线程数量； keepAliveTime :当线程池中空闲线程数量超过 corePoolSize 时，多余的线程会在多长时间内被销毁； unit : keepAliveTime 的单位 workQueue :任务队列，被添加到线程池中，但尚未被执行的任务；它一般分为直接提交队列、有界任务队列、无界任务队列、优先任务队列几种； threadFactory :线程工厂，用于创建线程，一般用默认即可； handler :拒绝策略；当任务太多来不及处理时，如何拒绝任务；接下来我们对其中比较重要参数做进一步的了解：一、workQueue任务队列上面我们已经介绍过了，它一般分为直接提交队列、有界任务队列、无界任务队列、优先任务队列； 1、直接提交队列：设置为SynchronousQueue队列，SynchronousQueue是一个特殊的BlockingQueue，它没有容量

Threadpool with persistent worker instances

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问题 I'm trying to queue up tasks in a thread pool to be executed as soon as a worker becomes free, i have found various examples of this but in all cases the examples have been setup to use a new Worker instance for each job, i want persistent workers. I'm trying to make a ftp backup tool, i have it working but because of the limitations of a single connection it is slow. What i ideally want to do is have a single connection for scanning directories and building up a file list then four workers

Best practice to send a lot of files (images) from your device to your server

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问题 I have a list of files to send from my device to my server. List<myFiles> list = new List<myFiles>() { "[long list of files...]" }; For that I want to create a list of tasks: for each file I should invoke a function that sends to my webapi that file via PUT public async Task<bool> UploadPhoto(byte[] photoBytes, int PropertyId, string fileName) { bool rtn = false; if (CrossConnectivity.Current.IsConnected) { var content = new MultipartFormDataContent(); var fileContent = new ByteArrayContent

What can you do to stop running out of stack space when multithreading?

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问题 I've implemented a working multithreaded merge sort in C++, but I've hit a wall. In my implementation, I recursively split an input vector into two parts, and then thread these two parts: void MergeSort(vector<int> *in) { if(in->size() < 2) return; vector<int>::iterator ite = in->begin(); vector<int> left = vector<int> (ite, ite + in->size()/2); vector<int> right = vector<int> (ite + in->size()/2, in->end() ); //current thread spawns 2 threads HERE thread t1 = thread(MergeSort, &left); thread

How to override the thread pool in Spring Boot app

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问题 I am writing below code to override the thread pool. But it is not working properly. What is the correct way to set override the thread pool in spring boot app startup. Note that i don't have a control in my code over the Server instance, so instantiating a Server is not a solution for my need. @Bean public EmbeddedServletContainerCustomizer getContainerCustomizer() { return (configurableEmbeddedServletContainer) -> { if (configurableEmbeddedServletContainer instanceof