nice

Does “nice” affect the priority of Java threads

由 与世无争的帅哥 提交于 2020-01-15 06:49:22
问题 On a Unix system, you can run a process at lower CPU priority using the nice command: nice program And you could use that to run a JVM process: nice java -jar program.jar The Java program run by that JVM process will start multiple threads. Does the nice change affect the scheduling of those Java threads? That is, will the Java threads have a lower CPU priority when run as nice java -jar program.jar that when run as java -jar program.jar In general, this will be system dependent, so I am

nice-repo 搜集优秀的开源项目

由 ぃ、小莉子 提交于 2020-01-08 21:21:01
【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 作为一介草根，在 github 上找开源项目是非常耗时的。原因不外乎以下几种： 项目名称个性化严重。（在阅读项目介绍前你不会知道 raveren/kint 是做什么的） 大部分的项目简介都是英文。（英文牛掰的大神可以无视我了。<span style="color: red;">我特别不能理解的一点是很多国人的项目，都是用英文简介然后把中文简介藏到 wiki 里，更有甚者直接就没有中文简介！</span>） 根据 stars 筛选，经常会错过一些很不错的项目。 为了减少这样不必要的时间浪费，nice-repo 诞生了，这是一个成长型的项目，我将陆续搜集优秀的开源项目，移除一些不再推荐的项目，保持项目的质量。另外，这里还提供了便捷快速的模糊搜索，帮助你快速的获取所需。 希望有更多的人参与到这个项目中，您可以按照下面的格式编辑 repo.js 文件，对本项目进行补充。 { name: '项目名称', link: '项目链接', description: '项目简介，请尽量使用中文，以方便查找。' } 项目主页 ，另外：当有人问你“有没有 laravel 的 cms 推荐”时，我想贴给他 [5-say.github.io/nice-repo/#laravel cms](http://5-say.github.io

Change niceness of all processes by niceness [closed]

由 浪子不回头ぞ 提交于 2020-01-06 06:38:19
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 4 years ago . I am using Debian, is there a way to change the niceness of all running process based on their current niceness? For instance change all currently running processes that have a niceness of -20 or -19 to -10. Renice can change a process, and processes for certain users. But as far as I can tell it can't do it

Process niceness (priority) setting has no effect on Linux

由 巧了我就是萌 提交于 2019-12-22 07:39:23
问题 I wrote a test program which consists of just an infinite loop with some computations inside, and performs no I/O operations. I tried starting two instances of the program, one with a high niceness value, and the other with a low niceness value: sudo nice -n 19 taskset 1 ./test sudo nice -n -20 taskset 1 ./test The taskset command ensures that both programs execute on the same core. Contrary to my expectation, top reports that both programs get about 50% of the computation time. Why is that?

Process niceness (priority) setting has no effect on Linux

由 心不动则不痛 提交于 2019-12-22 07:38:31
问题 I wrote a test program which consists of just an infinite loop with some computations inside, and performs no I/O operations. I tried starting two instances of the program, one with a high niceness value, and the other with a low niceness value: sudo nice -n 19 taskset 1 ./test sudo nice -n -20 taskset 1 ./test The taskset command ensures that both programs execute on the same core. Contrary to my expectation, top reports that both programs get about 50% of the computation time. Why is that?

Controlling scheduling priority of python threads?

由 蓝咒 提交于 2019-12-18 03:04:25
问题 I've written a script that uses two thread pools of ten threads each to pull in data from an API. The thread pool implements this code on ActiveState. Each thread pool is monitoring a Redis database via PubSub for new entries. When a new entry is published, python passes the data to a function that uses python's Subprocess.POpen to execute a PHP shell to do the actual work of calling the API. This system of launching PHP shells is necessary for functionality with my PHP web app, so launching

Niced process gives their priority to child process

由 不羁的心 提交于 2019-12-10 17:38:22
问题 I have given highest priority to sshd process using following command: nice -n -20 /sbin/sshd But it will give highest priority to child process (/bin/sh) also by default. So, is it possible to give normal priority (0) to child process instead of highest priority? 回答1: Assuming this sshd is OpenSSH v4.4 or newer, you can probably get the effect you are looking for by setting the ForceCommand option in /etc/ssh/sshd_config to something like: ForceCommand nice -n 0 $SSH_ORIGINAL_COMMAND The

Difference between nice and setpriority in unix

由 假如想象 提交于 2019-12-09 10:14:45
问题 I'm trying to implement a different flavor of the 'nice' command of unix in C. I have seen the definitions of nice() system call and setpriority() call. The nice() call only increments/decrements the priority of the process. If I want to set the priority of a process to a particular value, can't I use the nice() call? Basically, other than how the priority is modified, is there any difference between nice() and setpriority() ? 回答1: It's historical. nice() was introduced long before

sudo nohup nice <— in what order?

由 烂漫一生 提交于 2019-12-04 15:52:28
问题 So I have a script that I want to run as root, without hangup and nicely. What order should I put the commands in? sudo nohup nice foo.bash & or nohup nice sudo foo.bash & etc. I suspect it doesn't matter but would like some insight from those who really know. 回答1: If negative niceness is desired, I would do: sudo nohup nice command because according to `info coreutils' nohup should preceed nice. If I want a negative nice value, sudo must come before, since only root is able to use negative

Difference between nice and setpriority in unix

由 帅比萌擦擦* 提交于 2019-12-03 12:59:19
I'm trying to implement a different flavor of the 'nice' command of unix in C. I have seen the definitions of nice() system call and setpriority() call. The nice() call only increments/decrements the priority of the process. If I want to set the priority of a process to a particular value, can't I use the nice() call? Basically, other than how the priority is modified, is there any difference between nice() and setpriority() ? It's historical. nice() was introduced long before setpriority() . For backwards compatibility, the nice function was retained. nice sets your own priority (the niceness
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