Why should I compile my own kernel?

The advantages of compiling your own kernel include being able to tune the kernel to your specific hardware, and ending up with a smaller kernel. You may also need to compile your own kernel if the default kernel does not support some specific hardware you have.

What does it mean to compile Linux kernel?

Yes, compiling a kernel usually means: Downloading the source code. Possibly modifying the source code (most non-programmers don’t usually do this). Configuring the kernel (what features/modules/drivers to include, etc.) Compiling it.

How long does it take to compile Linux kernel?

It depends on the hardware especially the CPU. Here is a poll result which might help you to see. But, normally it is between 1-2 hours.

What are the advantages of kernel?

Advantages: It provides CPU scheduling, memory scheduling, file management through System calls only. Execution of the process is fast because there is no separate memory space for user and kernel.

How long does compiling a kernel take?

It took 11 hours! My most recent kernel, also 3.2, but now on a Pentium Dual Core T2370 with 2 GB dual-channel DDR2 and a SATA-3 SSD and all the unneeded modules turned off took 1 hour 48 minutes. It can vary a lot.

How can I speed up my kernel build?

I generally use make -j$(( $(nproc) * 2 )) and pass CFLAGS options like mtune=native, march=native, O3, fno-plt, pipe, etc. to make the kernel even faster. It’s proven to produce the better binaries.

What is the Linux kernel?

The Linux kernel is the heart of any Linux system. It handles user input/output, hardware, and controlling the power in the computer.

How do I compile a Linux kernel?

In order to compile the kernel, we’ll need to first install a few requirements. This can be done with a single command: Do note: You will need at least 12GB of free space on your local drive to get through the kernel compilation process. So make sure you have enough space.

How do I change the default kernel configuration in Linux?

There is actually a really easy way to do this. With a single command, you can copy the current kernel’s config file and then use the tried and true menuconfig command to make any necessary changes. To do this, issue the command: Now that you have a configuration file, issue the command make menuconfig.

How to make a new kernel bootable in Linux?

Make the kernel bootable. Go to boot. Run the following command. Remember to replace with the version number of the kernel you build. Point the boot loader at the new kernel. So it can be started. Use the tool that came with your distro to configure your bootloader. Add a new entry for the new kernel. Reboot.