List Of Performance Monitoring Tools

Before you start

Objectives : You will be able to know about many tools which are used to monitor system performance.

Prerequisites: You have to know the basic of Linux System.

Tags : top, lsof, iostat, vmstat, ps, w, vnstat, Gnome System Monitor.

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Understanding the basic of Linux Performance tools

We all know that , today Linux is the system which are used by almost all system administrators because they give flexibility to work easy and manage the whole users of the organizations.
Also, every resources of the linux system are critical so that a system administrator must ensure that all client or users not waste their resources. So a system administrator must use these below tools to know the status of system resources like CPU, Main Memory & Disk .

1.TOP: Top command displays all the running process in the system ordered by certain columns. This displays the information real-time.

2.LSOF: Lsof stands for ls open files, which will list all the open files in the system. The open files include network connection, devices and directories.

3.IOSTAT: iostat reports CPU, disk I/O, and NFS statistics. The following are some of iostat command examples.

4.VMSTAT: vmstat reports virtual memory statistics. The following are some of vmstat command examples. vmstat by default will display the memory usage (including swap) as shown below.

5.PS Command: Process is a running instance of a program. Linux is a multitasking operating system, which means that more than one process can be active at once. Use ps command to find out what processes are running on your system.

6.W: :- While monitoring system performance, w command will help to know who is logged on to the system.

7.VNSTAT: vnstat is a command line utility that displays and logs network traffic of the interfaces on your systems. This depends on the network statistics provided by the kernel. So, vnstat doesn’t add any additional load to your system for monitoring and logging the network traffic.

8. GNOME System Monitor: On Linux desktops that run GNOME, you can use the this tool to monitor processes, system resources, and file systems from a graphical interface. Apart from monitoring, you can also use this UI tool to kill a process, change the priority of a process.