Cacti is an open source web-based system and network monitoring tool. Cacti designed as the PHP front-end application for the RRDtool (Round-Robin database tool), it allows a user to poll the services at an interval of time and resulting in the graph format. Cacti is generally used to get a graph data for the CPU … Read more
Bmon is a portable real-time bandwidth monitor and rate estimator. It supports various input methods for different architectures. Various output modes exist, including an interactive curses interface, lightweight HTML output, and simple ASCII output. Statistics may be distributed over a network using multicast or unicast and collected at some point to generate a summary of statistics for … Read more
Netstat is a command-line tool for mornitoring network packages and network interface. It is a very useful tool, the system administrator can be used to monitor network performance, locate and solve related problems. In this article explain howto use netstat command on linux system. Example usage netstat command The syntax of netstat command is : … Read more
Atop is an interactive monitor to view the load on a Linux system. It shows the occupation of the most critical hardware resources on system level, i.e. cpu, memory, disk and network. It also shows which processes are responsible for the indicated load with respect to cpu- and memory load on process level. Disk load … Read more
Mytop is a free and open source command line monitoring software for MySQL databases. Its similar in look to “top” command in Linux/Unix. Mytop monitors MySQL threads and the database’s overall performance, allowing system administrators or developers to get some insight on how applications are interacting with a database. Install Mytop on RHEL/CentOS and Fedora … Read more
Collectl is a light-weight performance monitoring tool capable of reporting interactively as well as logging to disk. It reports statistics on cpu, disk, infiniband, lustre, memory, network, nfs, process, quadrics, slabs and more in easy to read format. In this article i will show you how to install and sample usage Collectl on Debian/Ubuntu and … Read more
Ncdu (NCurses Disk Usage) is a command line tool to view and analyse disk space usage on linux. It can drill down into directories and report space used by individual directories. This way it is very easy to track down space consuming files/directories. It actually allows the user to do this much faster than even a … Read more
nmon is a beutiful tool to monitor linux system performance. It works on Linux, IBM AIX Unix, Power, x86, amd64 and ARM based system such as Raspberry Pi. The nmon command displays and records local system information. The command can run either in interactive or recording mode. Nmon is a short for Nigel’s performance Monitor. … Read more
Dstat is a versatile replacement for vmstat, iostat, netstat and ifstat. Dstat overcomes some of their limitations and adds some extra features, more counters and flexibility. Dstat is handy for monitoring systems during performance tuning tests, benchmarks or troubleshooting. Dstat allows you to view all of your system resources in real-time, you can eg. compare … Read more
The Linux lsof command lists information about files that are open by processes running on the system. (The lsof command itself stands for “list of open files”.) In this tutorial show practical examples of the use lsof command. Some of the Linux distributions do not come with installed lsof packages. However, it can be installed as follows: Install lsof in … Read more