thread-priority

问题 There are many places across the web and Stack Overflow where one is discouraged from changing the priority of a ThreadPool thread or TPL Task . In particular: "You have no control over the state and priority of a thread pool thread." "The runtime manages the thread pool. You have no control over the scheduling of the thread, nor can you change the thread's priority." "You should not change the Culture or Priority or... of a PoolThread. Just like you don't paint or re-decorate a rental car."

问题 I am developing an API which is dependent on two third party data sources - One is SOAP API (Primary source) and other is mssql database (secondary source). The problem is these two sources are not stable and which is impacting the API and other APIs in the eco-system due lot of thread waiting for the response for long ( its shooting JVM memory). I want to have an implementation which timeout primary data source after a certain amount of time if not responded and switches to secondary source

问题 I had a look at the Lua book and learned that multi-threading in Lua is cooperative. What I couldn't find is some information about thread priorities.I guess that threads with the same priority run till completion, since multi-threading is cooperative, or a yield is done. What about a thread that has higher priority than another one? Is it able to interrupt the one with lower priority or will it run next when the thread with lower priority has run till completion? 回答1: There are no native

问题 I'll soon start banging my head on the wall: It's very simple really, I want to measure the time a task spends between 2 points (in Linux - 1 core - 1 CPU). During this time the task must have total control over the CPU and NOT get interrupted by any other task or HW interrupts. To achieve this, I'v created a kernel module to make sure the above criterions are met. In this kernel module I've tried to: First, disable IRQs: I've used spin_lock_irqsave()/spin_lock_irqrestore() - Which i presume

问题 I've seen many answers to this question but I'm still not sure. One of them was "Java is preemptive". (The JVM schedules using a preemptive, priority based scheduling algorithm (usually round robin algorithm). The second was that if 2 threads with the same priority run Java will not preempt and one thread could starve. So now I wrote a program to check it out, I created 10 threads with minimum priority followed by 10 threads with maximum priority, the results were that I jump between all of

问题 I'm trying to learn some basic java programming for games. I'm following this tutorial here. Their skeleton code for the run method in an applet: public void run () { // lower ThreadPriority Thread.currentThread().setPriority(Thread.MIN_PRIORITY); // run a long while (true) this means in our case "always" while (true) { // repaint the applet repaint(); try { // Stop thread for 20 milliseconds Thread.sleep (20); } catch (InterruptedException ex) { // do nothing } // set ThreadPriority to

问题 I've been using threads for 20 years on Unix and just learning them on Windows, with Visual Studio 2008. My app is dialogs-based MFC GUI, with four main "peer" windows (none of them a "main" window). When MyApp::InitInstance() starts, the Debug->Windows->Threads window reports just a single thread, MainThread. As I step past the first CDialog::Create() call, 3 worker threads are created. I don't know what these are and would love to--and especially would love a reference to a full explanation

问题 I understand that thread pool priority should/can not be changed by the running process, but is the priority of particular task running on the thread pool somewhat priced-in with the calling process priority? in other words, do all tasks in thread pool run in the same priority regardless the calling process priority? thank you update 1: i should have been more specific, i refer to thread inside Parallel.ForEach 回答1: I understand that thread pool priority should/can not be changed by the

问题 On certain occasions, when several back-end process happen to run at the same time (queue management is something else, I can solve it like that, but this is not the question here), I get General error: 1205 Lock wait timeout exceeded; try restarting transaction ROLLING BACK The process which has less priority is the one that locks the table, due to the fact that it started a few minutes before the high priority one. How do I give priority to a query over an already running process? Hope it

问题 Anyone think about it. OpenMP features to adjust cpu muscles to handle dumbbel. In my research for openmp we cannot set thread priority to execute block code with powerfull muscle. Only one way(_beginthreadex or CreateThread function with 5. parameters) to create threads with highest priority. Here some code for this issue: This is manual setting. int numberOfCore = ( execute __cpuid to obtain number of cores on your cpu ). HANDLES* hThreads = new HANDLES[ numberOfCore ]; hThreads[0] =