If you check your disk usage you will see that jbd2 process writes some data to the disk every 5 seconds. This can be seen in iotop utility. jbd2 is a part of ext4 journaling system. It synchronizes the filesystem and allows the system to quickly find damaged files after emergency shutdown. This is an […]
Category: Kernel configuration
Change your settings! Make Linux work as you want!
It may be interesting how much data you write to the disk per day. System administrators can use this information to think about resource efficiency. Recently, I discovered that in a day I have a lot of writing on the disc. But I just surf the Internet and especially don’t download anything. I managed to […]
What is /proc filesystem for? Applications may require specific information about system state, therefore Linux kernel should share this information. It opens access to other file systems. These file systems have directories and files, so the system state information is stored in them. So /proc is one of these file systems. It gives access to […]
Modules expand the Linux kernel with new features. It can be device drivers, encryption algorithms, file systems, and more. Modules work in kernel space, so they quickly execute their code. They don’t require kernel compilation, they are compiled separately. So, this is a quick way to expand the Linux kernel. Also unnecessary modules can be […]
Well, what is it for? Maybe you want to save resources. In my case, I use this setting to reduce CPU heat. The maximum frequency on my processor is 2.3 GHz. The minimum allowable frequency is 2.0 GHz. Therefore, I made every core of my processor work within the 2 GHz range. Everything works as […]