threadpool

问题 I am trying to use APScheduler to run periodic jobs with an IntervalTrigger, I've intentionally set the maximum number of running instances to one because I don't want jobs to overlap. Problem is that after some time the scheduler starts reporting that the maximum number of running instance for a job have been reached even after it previously informed that the job finished successfully, I found this on the logs: 2015-10-28 22:17:42,137 INFO Running job "ping (trigger: interval[0:01:00], next

问题 I am working on a program to migrate files from potentially big directory structures and many of them (approx. 1 million). My migration code already works quite well, and I am using a class to iterate to the directory structure, identify the files to migrate them sequentially one after another. Now I want to make better use of the available CPU resources of the targeted machine, and do those migrations asynchronously grabbing threads from a System.Threading.TThreadPool to execute these. I

问题 I am doing some performance/scalability testing of an IIS application that occasionally seems to slow down to a crawl in production. I'm able to reproduce the slowness consistently using NUnit. CPU and Memory do not spike during the testing, or when the slowness occurs in production. My strong suspicion is that the application is suffering from thread starvation, since it does not appear to be CPU, Memory, I/O, or database access that is causing the bottleneck. I do see signs of what appear

问题 I am doing some performance/scalability testing of an IIS application that occasionally seems to slow down to a crawl in production. I'm able to reproduce the slowness consistently using NUnit. CPU and Memory do not spike during the testing, or when the slowness occurs in production. My strong suspicion is that the application is suffering from thread starvation, since it does not appear to be CPU, Memory, I/O, or database access that is causing the bottleneck. I do see signs of what appear

问题 I am doing some performance/scalability testing of an IIS application that occasionally seems to slow down to a crawl in production. I'm able to reproduce the slowness consistently using NUnit. CPU and Memory do not spike during the testing, or when the slowness occurs in production. My strong suspicion is that the application is suffering from thread starvation, since it does not appear to be CPU, Memory, I/O, or database access that is causing the bottleneck. I do see signs of what appear

问题 I am doing some performance/scalability testing of an IIS application that occasionally seems to slow down to a crawl in production. I'm able to reproduce the slowness consistently using NUnit. CPU and Memory do not spike during the testing, or when the slowness occurs in production. My strong suspicion is that the application is suffering from thread starvation, since it does not appear to be CPU, Memory, I/O, or database access that is causing the bottleneck. I do see signs of what appear

问题 This question already has answers here : How to run a background task in a servlet based web application? (5 answers) Closed 5 years ago . Having read a lot of different things and not being totally familiar with the correct terms for some of these things, I am wondering what the correct way is for creating threads at time of tomcat startup that have a specific purpose . I am using a linux system. I am not trying to create a thread from a servlet, and I have a good idea of why this is bad.

问题 I've noticed that Gevent has threadpool object. Can someone explain to me when to use threadpool and when to use regular pool? Whats the difference between gevent.threadpool and gevent.pool? 回答1: When you have a piece of python code that takes a long time to run (for seconds) and does not cause switching of greenlets, all other greenlets / gevent jobs will 'starve' and have no computation time and it will look like your application 'hangs'. If you put this 'heavy' task in a Threadpool, the

问题 I've noticed that Gevent has threadpool object. Can someone explain to me when to use threadpool and when to use regular pool? Whats the difference between gevent.threadpool and gevent.pool? 回答1: When you have a piece of python code that takes a long time to run (for seconds) and does not cause switching of greenlets, all other greenlets / gevent jobs will 'starve' and have no computation time and it will look like your application 'hangs'. If you put this 'heavy' task in a Threadpool, the

问题 I have just did a sample for multithreading using This Link like below: Console.WriteLine("Number of Threads: {0}", System.Diagnostics.Process.GetCurrentProcess().Threads.Count); int count = 0; Parallel.For(0, 50000, options,(i, state) => { count++; }); Console.WriteLine("Number of Threads: {0}", System.Diagnostics.Process.GetCurrentProcess().Threads.Count); Console.ReadKey(); It gives me 15 thread before Parellel.For and after it gives me 17 thread only. So only 2 thread is occupy with