A disk is a storage device on a computer that provides the ability to read and write data. The difference between a magnetic disk and a hard disk: A hard disk is a so-called hard disk, which is a type of magnetic disk. I will mention disk and hard disk many times in the following […]
Tag: lvm
Can GraalVM replace JVM with performance advantages?
Table of Contents introduction What is GraalVM? Advantages of GraalVM GraalVM challenges in conclusion Introduction GraalVM is an emerging virtual machine technology that is promoted as an alternative to the traditional JVM and brings huge performance advantages. However, this view is controversial within the developer community. This article will explore whether GraalVM’s replacement of JVM […]
Does replacing JVM with Graalvm really bring huge performance benefits?
Introduction Spring Boot helps to easily develop standalone, production-ready Spring applications. It takes an opinionated approach to the Spring platform and third-party libraries: simplify the setup process with minimal configuration. Advantage: Easy to use: Spring Boot simplifies the creation of standalone Spring applications without complex configuration. Embedded Server: It allows direct embedding of servers such […]
LLVM (5) ORC example analysis
ORC example summary Summarize Because there are so many APIs, some logical concepts need to be clarified, which will make coding much easier. The running entity of JIT can be created using LLVMOrcCreateLLJIT, a logical JIT instance. The JIT instance needs to add the runtime library (dependent library) and user-defined context (running content) to run. […]
Does replacing JVM with Graalvm really bring huge performance benefits?
Introduction Spring Boot helps to easily develop standalone, production-ready Spring applications. It takes an opinionated approach to the Spring platform and third-party libraries: simplify the setup process with minimal configuration. Advantage: Easy to use: Spring Boot simplifies the creation of standalone Spring applications without complex configuration. Embedded Server: It allows direct embedding of servers such […]
RHEL7 configures LVM Mirror to create shared volumes
Article directory Preface 1. Configure LVM mirror volume 1.1. Create PV 1.2. Create VG 1.3. Create LV 1.4. View LV 1.5. Format file system 1.6. Create a mount point and mount it 1.7. Write test data 2. Switch LVM shared volumes 2.1. Planned switching 2.1.1. Checking I/O Traffic 2.1.2. Node 1 uninstalls the mount point […]
Ubuntu download source code clang + llvm+lldb compile + install
[This article may involve installing the following tools on Ubuntu:] A、g + + B. gcc C. make D. cmake E. clang(10.0.1)(required) F, llvm(10.0.1)(required) G, lldb(10.0.1)(optional) H. libcxx(10.0.1)(required) I. libcxx abi(10.0.1)(required) J. compiler-rt (optional) 【Tired】 I currently have two virtual machines: A. Ubuntu [ubuntu-20.04.1-desktop-amd64.iso], B. fedora [Fedora-Workstation-Live-x86_64-32-1.6.iso]. A can share files with the physical machine normally, […]
Java thread monitoring jvisualvm and jstack
Five states of threads New: new Run: runnable Waiting: waiting (waiting indefinitely), timed waiting (waiting within a time limit) blocked: blocked End: terminated Thread conversion relationship Two monitoring methods for threads 1. Graphical interface method: jvisualvm Before monitoring, first add monitoring parameters to the jvm. In the catalina.sh file in the bin directory of tomcat, […]
Logical volume LVM and configuration disk quota management
Directory: 1: Logical volume LVM 1.1 LVM Overview 1.2 Concept of LVM mechanism 1.3 LVM management commands 1.4 Create logical volumes 1.5 Format the logical volume and mount it for use 1.6 Logical volume expansion Two: Set disk quota 2.1 Conditions and characteristics of disk quota 2.2 Disk quota process 2.3 Mount file system with […]
ISCSI: The backend volume configures the ISCSI target initiator as LVM
Write in front Preparing for exams and organizing relevant notes The blog post involves using LVM for ISCSI target backend block storage demo If you don’t understand enough, please help me correct it. There is only one true responsibility for everyone: to find themselves. Then stick to it in your heart for the rest of […]