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Intel UMWAIT Support Queued For Linux 5.3 - New Feature For Tremont Cores

Adding to the growing list of features for the upcoming Linux 5.3 kernel is now Intel UMWAIT support for better power-savings. UMWAIT is a new feature for Intel Tremont CPUs cores. UMWAIT can help enhance power savings during idle periods with "user mode wait" functionality. UMWAIT allows for monitoring a range of addresses in a lightweight power/performance state or an enhanced mode that can still help with conserving power but less so in order to offer lower latencies. UMWAIT is intended to be used as an alternative to kernel spinloops when needing to wait/sleep for short periods of time when the system is idle. Read more

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Five Linux Server Administration Mistakes And How To Avoid Them

In 2017, an employee at GitLab, the version control hosting platform, was asked to replicate a database of production data. Because of a configuration error, the replication did not work as expected, so the employee decided to remove the data that had been transferred and try again. He ran a command to delete the unwanted data, only to realize with mounting horror that he had entered the command into an SSH session connected to a production server, deleting hundreds of gigabytes of user data. Every seasoned system administrator can tell you a similar story. The Linux command line gives server admins control of their servers and the data stored on them, but it does little to stop them running destructive commands with consequences that can’t be undone. Accidental data deletion is just one type of mistake that new server administrators make. Read more

Fedora 31 Looking At No Longer Building i686 Linux Kernel Packages

Not to be confused with Ubuntu's varying stance on dropping 32-bit packages beginning with their next release later this year, Fedora 31 now has a proposal pending to discontinue their i686 kernel builds but they will still be keeping with their 32-bit packaging. This Fedora 31 change proposal by Justin Forbes, one of Fedora's kernel hackers, is just about ending i686 kernel builds beginning with this Fedora release due out in October. The i686 kernel-headers package would still be offered in order to satisfy necessary dependencies for 32-bit programs needing those headers. Of course, users will have to be running off a 64-bit kernel. All 32-bit programs should continue to work on Fedora 31. Read more Also: Fedora Workstation 31 Is Looking Great With Many Original Features Being Worked On Fedora booth at Red Hat Summit Fedora Update Week 23–24