The config files for the Arch kernel packages are in the Arch package source files (for example, linked from linux). For example support for things like Bluetooth, video4linux, 1000Mbit Ethernet, etc. You can reduce the size of your kernel (and therefore build time) by not including support for things you do not have or use.Best way to increase the speed of your system is to first tailor your kernel configuration to your architecture and processor type.Traditional compilation Involves manually downloading a source tarball, and compiling in your home directory as a normal user. Arch Build System Takes advantage of the high quality of existing linux PKGBUILD and the benefits of package management. Some more details can be found on (which provides kernel binaries based on Zen for Debian).įollowing methods can be used to compile your own kernel: Zen Kernel - Result of a collaborative effort of kernel hackers to provide the best Linux kernel possible for everyday systems.This is done by replacing most kernel spinlocks with mutexes that support priority inheritance, as well as moving all interrupt and software interrupts to kernel threads. This patch allows nearly all of the kernel to be preempted, with the exception of a few very small regions of code ("raw_spinlock critical regions"). Realtime kernel - Maintained by a small group of core developers led by Ingo Molnar.Longterm - Long-term support (LTS) Linux kernel and modules.It also enables more upstream kernel hardening features than linux. Hardened - A security-focused Linux kernel applying a set of hardening patches to mitigate kernel and userspace exploits.Stable - Vanilla Linux kernel and modules, with a few patches applied.When installing a different kernel or switching between multiple kernels, you must configure your boot loader to reflect the changes.Ĭommunity support on forum and bug reporting is available for officially supported kernels. Kernel packages are installed under the /usr/lib/modules/ path and subsequently used to generate the vmlinuz executable image in /boot/. The article ends with an overview of custom kernel compilation with links to various methods. There is also a description of patches that can be applied to the system's kernel. This article lists some of the options available in the repositories with a brief description of each. There are various alternative Linux kernels available for Arch Linux in addition to the latest stable kernel. Kernel.x86_64 5.0.10-300.fc30 5.0.13-300.fc30 5.0.16-300.The Linux kernel is an open-source monolithic Unix-like computer operating system kernel.Īrch Linux is based on the Linux kernel. You can also use YUM and DNF to check installed kernels. Ii linux-image-4.15.0-50-generic 4.15.0-50.54įor RedHat or RPM based systems (CentOS, Fedora, etc.) you can query the rpm database using the rpm command. Now that you know which kernel version you are currently running, you can check the installed versions and see if there are any later releases.įor Debian based systems (Ubuntu, Mint, etc.) you can use dpkg, then use grep to filter the results and only show the kernel (linux-image). uname -rĤ.15.0-50-generic List All Installed Kernel Versions This will output the kernel version (release) number. To check which kernel is currently running on your system, use the uname command with the “release” or -r switch. ![]() ![]() This will give you version numbers and you can see if there is an installed version higher than the running version. Q: Is there a way I can check to see a Linux system has a newer kernel installed? For example, if a system has installed a new kernel, but has not yet rebooted to load it?Ī: Yes, you can check the currently running kernel as well as which kernels are installed.
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