These numbers will tell us if further tuning is required to improve I/O performance. The next section lists all the devices attached to the computer, and the corresponding TPS (transfers per second), kilobytes read and write numbers, and much more. A high number here would indicate that the I/O is slow, or is being held up in some other process. According to several online sources this can be fixed by installing 'gsettings-desktop-schemas': sudo apt install gsettings-desktop-schemas. The %iowait column tells us if the CPU is wasting a lot of time waiting for I/O operations to complete. 12: iostat outputĪs you can see, the first section of the output is the average CPU usage divided into sections, including userspace, system space, CPU steal, CPU idle, and I/O wait. Figure 12 shows the output of iostat on an Ubuntu 18.04 computer. Using iostat, we can decide if we need to modify system configuration to allow for better or balanced I/O operations. It also provides the CPU utilization for such operations. Iostat is used to monitor such I/O activity on all disks and partitions on a computer. And much like other resources, there's a limit to this bandwidth. In other words, every process performs a number of I/O (input/output) operations every second. Whenever a process runs, along with CPU and memory, the process also consumes disk bandwidth. These files are written to the disks attached to the computer. 7: lsof with user filterĪs we’ve already mentioned, everything in a Linux computer is controlled using files. You 'just' need to start it and tell it to connect to that X server, as well as tell the display to allow the attachment.
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