linux check free ram

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

############ Review embedded Linux application ############Embedded Linux applications:I. Embedded summary, basic concepts:1. GPL: The same as GPL for the database connected to it;Lgpl: lgpl is required only when it is modified; In general, GPL is

Play Linux within storage management-freeThe free command displays the idle, used physical memory and swap memory in the Linux system, and the buffer used by the kernel. In Linux system monitoring tools, the free command is one of the most

Play Linux within storage management-free　　The free command displays the idle, used physical memory and swap memory in the Linux system, and the buffer used by the kernel. In Linux system monitoring tools, the free command is one of the most

How to configure Hugepages on the Linux platformNoun Explanation:Memlock-max Locked-in-memory address space (KB)1. Configuration/etc/security/limits.conf memlock 参数Memlock slightly less than the physical memory is greater than SGA, assuming that the

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

1. What are the Chinese systems under Linux? Mainly have cxterm, Wzce, Cxwin, Xcin, Zhxwin. Cxterm is a Chinese terminal running under the X-window. Wzce is a terminal that runs as a shell. Cxwin is a xserver that supports Chinese. Xcin can enter