thread-priority

Guide for working with Linux thread priorities and scheduling policies? [closed]

由 纵然是瞬间 提交于 2019-12-12 01:53:17
问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 2 years ago . I'm having trouble getting the hang of thread(/process) prioritization on Linux, scheduling policy selection, what to choose when and how, and what the exact effects are. Is there any documentation (like a guide) somewhere, preferably with concrete examples and timelines, which I could consult? 回答1: I'm having

Windows 7: poor GUI response in my program while downloading data; is there some way to improve this?

由 China☆狼群 提交于 2019-12-11 13:37:38
问题 I've written a program that (among other things) downloads multiple large files from a server on the LAN, using TCP. This program runs fine under Linux, MacOS/X, and generally under Windows as well (it uses Qt for the GUI and straight sockets calls for networking), but on certain Windows machines the download appears to be too much for the machine to handle, and I'm wondering if anyone has any ideas as to why that is and what can be done about it. When downloading files, my program spawns a

Change thread priority from lowest to highest in .net

由 社会主义新天地 提交于 2019-12-11 03:07:11
问题 I am trying to speed things by having one thread write to a linked list and another thread process the linked list. For some reason if the method that writes to the linked list I make it into a task and the method that reads from the linked list a low priority thread the program finishes as a whole much faster. In other words I experiense fastests results when doing: Task.Factory.StartNew( AddItems ); new Thread( startProcessingItems ) { Priority = ThreadPriority.Lowest }.Start(); while

Setting nice value of Java program running on linux

由 偶尔善良 提交于 2019-12-11 01:12:30
问题 I want my Java program to lower it's priority some so it doesn't overwhelm the system. My initial thought was to use Thread.currentThread().setPriority(5) but that appears to be merely its priority within the JVM. Then I thought maybe I'd cludge it and invoke a system command, but Thread.getId() is also merely the JVM's id, so I don't even know what process id to pass to renice . Is there any way for a Java program to do something like this? 回答1: If your program is the only running java

sched_setscheduler is for all threads or main thread?

由 好久不见. 提交于 2019-12-10 10:13:43
问题 I have the following source which like to have SCHED_RR priority 90 : int main(int argc, char** argv) { const char *sched_policy[] = { "SCHED_OTHER", "SCHED_FIFO", "SCHED_RR", "SCHED_BATCH" }; struct sched_param sp = { .sched_priority = 90 }; pid_t pid = getpid(); printf("pid=(%d)\n",pid); sched_setscheduler(pid, SCHED_RR, &sp); printf("Scheduler Policy is %s.\n", sched_policy[sched_getscheduler(pid)]); pthread_t tid ; pthread_create(&tid , NULL, Thread1 , (void*)(long)3); pthread_create(&tid

How to set Priority of IntentService in Android

由 怎甘沉沦 提交于 2019-12-09 17:02:45
问题 I was wondering if it is possible to set the priority of an IntentService like you can with a Thread . So far I have not found anything. 回答1: The HandlerThread that IntentService uses is not exposed to the SDK. It is set to Process.THREAD_PRIORITY_DEFAULT as a priority. Note that IntentService is 143 lines of code, including whitespace and comments, so you might consider just cloning it to have one with the priority you seek. 回答2: You can set Process.setThreadPriority(Process.THREAD_PRIORITY

Unable to set Pthread Priority

由 拜拜、爱过 提交于 2019-12-08 19:33:54
问题 I am unable to set Pthread priority using pthread_attr_setschedparam() . I have tried to resolve this issue but couldn't do it. I also consulted my text book which also uses the same function. I copied this code from book. Can you tell me how to set thread priority? Here is the code: void *Func(void *arg); int main() { pthread_t tid[5]; pthread_attr_t *tattr; struct sched_param param; int pr,error,i; do { if( (tattr=(pthread_attr_t *)malloc(sizeof(pthread_attr_t)) )==NULL) { printf("Couldn't

pthread_create warning on android

由 柔情痞子 提交于 2019-12-07 11:26:02
问题 After calling pthread_create function I receive next message: W/libc (26409): pthread_create sched_setscheduler call failed: Operation not permitted The code used to create the thread is: pthread_attr_t threadAttr; int ret = pthread_attr_init(&threadAttr); //code to check ret - it's 0 size_t guard_size = 0; pthread_attr_getguardsize(&threadAttr, &guard_size); ret = pthread_attr_setstacksize(&threadAttr, myStackSize + guard_size); //code to check ret - it's 0 ret = pthread_attr_setdetachstate(

sched_setscheduler is for all threads or main thread?

由 柔情痞子 提交于 2019-12-06 01:51:32
I have the following source which like to have SCHED_RR priority 90 : int main(int argc, char** argv) { const char *sched_policy[] = { "SCHED_OTHER", "SCHED_FIFO", "SCHED_RR", "SCHED_BATCH" }; struct sched_param sp = { .sched_priority = 90 }; pid_t pid = getpid(); printf("pid=(%d)\n",pid); sched_setscheduler(pid, SCHED_RR, &sp); printf("Scheduler Policy is %s.\n", sched_policy[sched_getscheduler(pid)]); pthread_t tid ; pthread_create(&tid , NULL, Thread1 , (void*)(long)3); pthread_create(&tid , NULL, Thread2 , (void*)(long)3); pthread_create(&tid , NULL, Thread3 , (void*)(long)3); while(1)

Any relationship between process priority and thread pool priority (C#)

由 青春壹個敷衍的年華 提交于 2019-12-05 22:46:41
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 Adriano Repetti I understand that thread pool priority should/can not be changed by the running process, That's not exact. You can change Thread Pool's thread priority (inside delegate
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