Language Selection

English French German Italian Portuguese Spanish

Linux: Custom Kernels Trim Fat and Tune Performance

Filed under
Linux

I have some shocking news: despite the astonishing growth of Linux, there is a whole new generation of Linux users who have never, ever compiled a kernel. How to account for this sad state of affairs? Perhaps it's because the distribution maintainers are doing such fine jobs it's not necessary. Maybe users just don't know that they can. Whatever the reasons, today we're taking a tour of some of the different ways to customize the Linux kernel. First we'll learn the old reliable generic way, and then take a tour of the Fedora Way and the Debian Way of customizing kernels.

A word of warning: while building a custom kernel isn't all that difficult, it is complex and time-consuming, and when you're all finished you might be the proud parent of a non-booting kernel. The good news is you can have as many do-overs as you want without hurting your system. Any Linux system can have any number of kernels and you can choose which one to boot to, so never delete old kernels until you're certain your new one works correctly. Your system will not try to boot to a new kernel until you explicitly configure it to do so, so it can't sneak up on you. So you can go on a wild spree and build and test a whole army of new kernels if you like.

Give yourself a couple of gigabytes of disk space to play with...

Why would you even want to do this?

Full Story.




More in Tux Machines

University fuels NextCloud's improved monitoring

Encouraged by a potential customer - a large, German university - the German start-up company NextCloud has improved the resource monitoring capabilities of its eponymous cloud services solution, which it makes available as open source software. The improved monitoring should help users scale their implementation, decide how to balance work loads and alerting them to potential capacity issues. NextCloud’s monitoring capabilities can easily be combined with OpenNMS, an open source network monitoring and management solution. Read more

Linux Kernel Developers on 25 Years of Linux

One of the key accomplishments of Linux over the past 25 years has been the “professionalization” of open source. What started as a small passion project for creator Linus Torvalds in 1991, now runs most of modern society -- creating billions of dollars in economic value and bringing companies from diverse industries across the world to work on the technology together. Hundreds of companies employ thousands of developers to contribute code to the Linux kernel. It’s a common codebase that they have built diverse products and businesses on and that they therefore have a vested interest in maintaining and improving over the long term. The legacy of Linux, in other words, is a whole new way of doing business that’s based on collaboration, said Jim Zemlin, Executive Director of The Linux Foundation said this week in his keynote at LinuxCon in Toronto. Read more

Car manufacturers cooperate to build the car of the future

Automotive Grade Linux (AGL) is a project of the Linux Foundation dedicated to creating open source software solutions for the automobile industry. It also leverages the ten billion dollar investment in the Linux kernel. The work of the AGL project enables software developers to keep pace with the demands of customers and manufacturers in this rapidly changing space, while encouraging collaboration. Walt Miner is the community manager for Automotive Grade Linux, and he spoke at LinuxCon in Toronto recently on how Automotive Grade Linux is changing the way automotive manufacturers develop software. He worked for Motorola Automotive, Continental Automotive, and Montevista Automotive program, and saw lots of original equipment manufacturers (OEMs) like Ford, Honda, Jaguar Land Rover, Mazda, Mitsubishi, Nissan, Subaru and Toyota in action over the years. Read more

Torvalds at LinuxCon: The Highlights and the Lowlights

On Wednesday, when Linus Torvalds was interviewed as the opening keynote of the day at LinuxCon 2016, Linux was a day short of its 25th birthday. Interviewer Dirk Hohndel of VMware pointed out that in the famous announcement of the operating system posted by Torvalds 25 years earlier, he had said that the OS “wasn’t portable,” yet today it supports more hardware architectures than any other operating system. Torvalds also wrote, “it probably never will support anything other than AT-harddisks.” Read more