Blocking IO and non blocking IO
Blocking and non blocking IO Everything can be blocked or non blocked Concept of blocking: What is blocking Because some resources and conditions were not reached, the process stalled Cost of blocking Wasting time, like sleep, wastes system resources Non blocking concept: What is non blocking: UTF-8...
Posted by varun_146100 on Fri, 01 Oct 2021 02:20:36 +0530
RHCSA-B1. Crack and modify the root password
Red hat RHCE exam am - RHCSA (RH134) serverb.example.com task 1. Change the root password If you can't break the password, you can't enter the system, and the exam will hang up Task requirements Set the root password of serverb to 123.You need system access to do this Complete step On the navigUTF-8...
Posted by damonlee on Fri, 01 Oct 2021 05:49:03 +0530
Flume getting started (installation and deployment + getting started case)
1, Flume installation deployment 1.1 installation address (1) Flume official website address: http://flume.apache.org/ (2) Document viewing address: http://flume.apache.org/FlumeUserGuide.html (3) Download address: http://archive.apache.org/dist/flume/ Flume's official documents are very detaiUTF-8...
Posted by flappy_warbucks on Fri, 01 Oct 2021 06:44:41 +0530
Programmer's Documentation: markdown Quick Start
1. Preface Before markdown was used, development documents used doc documents. However, DOC documents were not easy to upload to code hosting platforms such as gitHub or gitee, and it was not easy to view change records. Instead, markdown was easy to use, had no cumbersome formatting or typesetUTF-8...
Posted by yarub on Fri, 01 Oct 2021 22:20:09 +0530
Deploy the SpringBoot project to the server
1, Server environment preparation 1. Install and configure JDK Use FileZilla to upload jdk-8u161-linux-x64.tar.gz to the mnt folder of the server mkdir /opt/modules/ Extract to the new folder tar -xf /tmp/jdk-8u161-linux-x64.tar.gz -C /opt/modules/ Configure environment variables vi /etc/profiUTF-8...
Posted by gandelf1000 on Sat, 02 Oct 2021 03:23:37 +0530
mit 6.s081 lab3 page tables
chapter 3 Print a page table The content of this exercise is to print page table. You need to implement a print function vmprint with the parameter pagetable_t. Pass in the root page table address and print the corresponding pagetable. In this exercise, you only need to print the pagetable of tUTF-8...
Posted by sfhc on Sun, 03 Oct 2021 00:11:03 +0530
[LFS series] DIY Linux system from scratch: building LFS system - Glibc-2.21
Glibc software package contains the main C function library. This library provides basic programs such as allocating memory, searching directories, opening and closing files, reading and writing files, operating strings, pattern matching, basic algorithms and so on. Installing Glibc First, go tUTF-8...
Posted by Alidad on Sun, 03 Oct 2021 00:32:42 +0530
Issue 2 ARM bare metal part: [12] buzzer experiment
brief introduction The driving LED light on and off in the previous experiments belongs to the output control of GPIO. This paper further consolidates the GPIO output control of I.MX6U. There is an active buzzer on the I.MX6U-ALPHA development board. The switch of the buzzer can be controlled UTF-8...
Posted by infratl on Sun, 03 Oct 2021 04:23:53 +0530
Linux -- process control
Create process fork function initial fork function is a very important function in Linux. It creates a new process from an existing process. The new process is a child process and the original process is a parent process #include pid_t fork(void) //Return value: the child process reUTF-8...
Posted by Morrigan on Sun, 03 Oct 2021 04:56:24 +0530
How Linux I/O works
Disk performance index There are five common indicators to measure disk performance: utilization, saturation, IOPS, throughput and response time. These five indicators are the basic indicators to measure disk performance. Utilization: refers to the percentage of time that the disk processes I/OUTF-8...
Posted by sheila on Sun, 03 Oct 2021 07:14:11 +0530