linux check ram usage

Why is the server so slow? CPU, RAM, and disk I/O resources are exhausted, and ram is used up Machine running is slow because it consumes too many system-specific resources. The main resources of the system include CPU, RAM, disk I/O, and network.

Note: This content is excerpted from the "DevOps Troubleshooting: Best Practices for Linux server Operations" book System load The average system load is probably the first basic metric to use when solving problems that cause the

Memory UsageOn Linux, there is commands for almost everything, because the GUI might is always available. When working on servers only the shell access is available and everything have to be do from these commands. So today we shall is checking the

File System of embedded devices The system needs a method for storing and retrieving information in a structured format, which requires the participation of the file system. Ramdisk (see references) is a mechanism for creating and mounting a file

Introduction in Linux, there is a special feature-initializing the memory disk initrd (initial RAM disk) technology, and the kernel supports compressed file system images. With these two features, we can enable Linux to initialize memory disks from

This article introduces in detail the concept of boot loader, which is based on the OS boot loader in the embedded system, The main tasks of software design and the structure framework. 1. Introduction Running GNU/Linux systems on dedicated

The Linux operating system contains a number of tools, all of which can help you manage your system. From simple file and directory tools to very complex security commands, there's not much that you can't do on Linux. Also, while normal desktop

Transferred from the "Technology Achievement Dream" blog, http://ixdba.blog.51cto.com/2895551/715742 In the previous article, I gave a brief introduction to several aspects of Linux performance and how to solve them, but how do I find out from the

The Linux operating system contains a number of tools, all of which can help you manage your system. From simple file and directory tools to very complex security commands, there's not much that you can't do on Linux. Also, while normal desktop

Ubuntu uses top/free to check the memory usage. When I use free/top to check the memory usage, I was shocked. The machine has 4 GB of memory, it shows that the free idle memory is only over 300 mb. After checking the process, no applications that