These are also useful for monitoring remote servers. This will show three outputs every five seconds and show the information since the last reboot.ĬPU usage under GUI is very well depicted by the Gnome System Monitor and other system monitoring applications. Once installed, you can monitor a variety of parameters, for example compare the CPU utilization of an SMP system or multi-processor system.įinding out if any specific process is hogging the CPU needs a little more command line instruction such # iostat -xtc 5 3 You may have to install ‘ sysstat’ in your system, since it may not be installed by default. Similar output statistics may be seen by using command line tools such as the ‘ mpstat’, which is part of a group package called ‘ sysstat’. You can also see process statistics, memory utilization, uptime, load average, CPU status, process counts, and memory and swap space utilization statistics. These command line applications show the percentage of each CPU being utilized. To see what each CPU is doing or how two CPUs are sharing the load, you have to use ‘ top’ or ‘ htop’. You may have a single, a dual core, or a quad core CPU in your system. There are other system monitors available under various window managers in Linux. Swap: 0k total, 0k used, 0k free, 0k cached Under Linux, there are a number of ways you can check the used memory space - both in static and dynamic conditions.įor a static snapshot of the memory, use ‘ free -m’ which results in the # top RAM or memory is used to run the current application. It shows how a disk is being used and displays the information in the form of either multicolored concentric rings or boxes. Bash scripts may be written for this and run at specific times as a cron job.įor the GUI, there is a graphical tool called ‘ Baobab’ for checking the disk usage. It is better that the system checks the disks and informs you by email if there is a potential danger. However, checking each hard disk to see the percentage used can be a big drag. How much is used and balance available is shown as well. The total size is shown in gigabytes (G). This shows there are two partitions (1 & 2) of the hard disk sda, which are currently at 24% and 72% utilization. Filesystem Size Used Avail Use% Mounted on
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