pool

问题 There is a strange behavior of map when using Python's multiprocessing.Pool . In the example below a pool of 4 processors will work on 28 tasks. This should take seven passes, each taking 4 seconds. However, it takes 8 passes. In the first six passes all processors are engaged. In the 7th pass only two tasks are completed (two idling processors). The remaining 2 tasks are finished in the 8th pass (two idling processors, again). This behavior appears for seemingly random combinations of number

问题 The application I am working on uses thread pool. Here's the basic pseudo code. On the main thread foreach(Object obj in Component.GetObject()) { //Invoke the thread pool providing the call back (method to be called on the background// thread) and pass the object as the parameter. } //Wait for the threads to complete. The "Component.GetObject" will basically return a CLR object using Yield return. This object needs to be processed by two other components on threads. So we are invoking the

问题 my Message Driven Bean executes highly intensive operations so I would like to restrict it's pool size or my server would have been overloaded. I have tried this ( code ) but it doesn't work, it's pool is still 32 ( empirically tested, time to time I restart a server so there are no pooled instances ). @MessageDriven( mappedName = "jms/TestTopic", activationConfig = { @ActivationConfigProperty( propertyName = "acknowledgeMode", propertyValue = "Auto-acknowledge" ), @ActivationConfigProperty(

问题 I want a Thread-Pool that provides a maximum of X Threads to process tasks, so far no problem. However each submitted Task can specify an IO-Target which is specifically limited (say Y). So a submitted IOTask returns the target "google.com" with limit 4 (Y) and the pool has a global limit 16 (X). I want to submit 10 google.com-tasks where only 4 are processed in parallel and the pool has 12 threads free for other tasks. How can I achieve this? 回答1: You can wrap two ExecutorService instances

问题 I wanted to change a code which was like if("T".equalsIgnoreCase(bo.getSubjectType())) //method-1 to if(String.valueOf('T').equalsIgnoreCase(bo.getSubjectType())) //method-2 So for that reason I wrote a sample code String s1 = "T"; String s2 = "T"; char c1 = 'T'; char c2 = 'T'; System.out.println(String.valueOf(c1) == String.valueOf(c2)); // false System.out.println(s1 == s2); // true Which pretty much says String.valueOf(arg) produces a String literal and places it in constant pool . So my

问题 Hello fellow developers... I am trying to implement WebSocket fixed connection pool, unfortunately netty provided poor guide for FixedChannelPool and maximum "what you can get" is their Unit Tests Client code that I am using example Source Code and from this post found out that bootstrap.handler(new ChannelInitializer<>()) is overridden by ChannelPool Then I tried to move ChannelInitializer block to: public class SomeConnectionPoolHandler implements ChannelPoolHandler { private final URI uri

问题 I have a web app from visual studio that is using local IIS server to run. It is an MVC 3 application. I setup the application pool in my IIS (win 7 pro) to use a service account for the application identity. When I browse the site I am getting permission errors for a function on the site which I would not get if it was using the service account. This has been tested by using same service account on a development server as the application pool identity. Application executes with no errors.

问题 How to set application pool to a website using htmlagilitypack? I'm currently using app pool - local system, when I run my code I get an error that says "Unable to connect to the remote server" HtmlAgilityPack.HtmlDocument doc = hw.Load(url); HtmlNodeCollection nodes = doc.DocumentNode.SelectNodes("//a[@class='metatag-topi metatag-keywords']"); HtmlNodeCollection nodes2 = doc.DocumentNode.SelectNodes("//div[@class='pagination']/a[@href]"); HtmlNodeCollection phone = doc.DocumentNode

问题 Okay I've been playing with some code partly to get a better understanding of python, and partly to scrape some data from the web. Part of what I want to learn about if using Python Multiprocessing and Pool. I've got the basics working, however because I wrote the procedure single threaded first, and then moved to use pool to multi-thread the process, I have both global variables, and calls to globally defined functions. I'm guessing both of these are both bad, but searching the web, things

问题 I'm developing application in Java which connects to different web-servers via HTTP protocol (sends them request and waits for response). I would like to use pattern with queue and worker pool, so I'd like to know if there any frameworks in Java providing methods for this? 回答1: I think what you're asking for is a threadpool. It has a queue of tasks and a number of threads working on those tasks. A little bit of googling for "java threadpool" landed me there, might be relevant. http://download