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Canonical Contributing Upstream Improvements To Plymouth Ahead Of Ubuntu 20.04 LTS One of the immediate differences Ubuntu 20.04 desktop/laptop users will notice when booting in UEFI mode is the boot splash screen improvements thanks to leveraging Red Hat's work on providing a flicker-free boot experience and pulling in the UEFI BGRT system/motherboard logo during the boot process to provide a more transitive experience. Canonical in turn is working on pushing some of their improvements back into upstream Plymouth...
Intel P-State Driver Shifting To "Schedutil" Governor Default With Linux 5.7 On top of all the other changes in Linux 5.7 so far, a secondary set of power management updates were sent in today for this next version of the kernel and includes now using the Schedutil governor by default for Intel P-State and Arm big.LITTLE systems...
AMD's Marek Olšk Lands Even More OpenGL Threading Improvements Into Mesa 20.1 One month ago to the day I was writing about OpenGL threading improvements for Mesa 20.1 and since then more "GLTHREAD" work has materialized and successfully landed for improving the Mesa OpenGL driver performance...
Linux 5.7 Changes So Far: New exFAT Driver, Tiger Lake Graphics By Default, Apple Fast Charge, Etc We are now one week through the two week long Linux 5.7 kernel merge window where new/improved functionality is introduced. Here is a look at the changes so far for Linux 5.7...
C-SKY Architecture Gets Fix For Its Own Speculative Execution Bug In Linux 5.7 C-SKY is a Chinese 32-bit CPU architecture intended for low-power devices from media boxes / DVRs to printers and other consumer electronics. C-SKY has also worked its way into a ~$6 development board. With its updates for the Linux 5.7 kernel are various additions to this maturing architecture support along with a speculative execution fix...
Initial Benchmarks With Intel oneAPI Level Zero Performance Last week Intel released an initial set of micro-benchmarks for their oneAPI Level Zero and with L0 support being plumbed into their open-source Intel Compute Runtime, this weekend I started toying around with some Level Zero benchmarks on a variety of Intel processors.
L1d Cache Flush On Context Switch Moves Forward For Linux In Light Of Vulnerabilities A new patch series sent out just under one month ago was providing opt-in L1 data cache flushing on context switching. That work has now been revived again and now with documentation added it's clear that this work is being done in response to a recent CVE being made public...
Linux Exec Should Be Less Deadlock Prone In Future Kernels Ongoing work around Linux's exec() code should make it less deadlock prone in future kernel versions...
/dev/random Seeing Performance Work For Linux 5.7 The Linux 5.7 kernel will bring random performance improvements as in /dev/random...
Kaidan 0.5 Released As The KDE-Focused Jabber/XMPP Chat Client Kaidan is the open-source project that last year joined KDE as a Jabber/XMPP chat client. After a half year of work, Kaidan 0.5 has finally been released...
Linux 5.7 Perf Changes Include Additions For AMD Zen 3, Intel Tiger Lake The perf subsystem continues to be quite lively with improvements and for Linux 5.7 is seeing a number of low-level improvements...
Phoronix Test Suite 9.6 Milestone 2 Released For Latest Cross-Platform Benchmarking The second development release of the Phoronix Test Suite 9.6 cross-platform benchmarking software is now available for evaluation and testing...
Looking At The LVI Mitigation Impact On Intel Cascade Lake Refresh On Friday I posted some initial numbers looking at the LVI mitigation impact when using the LLVM Clang compiler with that open-source, multi-platform compiler having landed its mitigation this week for Intel's Load Value Injection (LVI) vulnerability that was disclosed in March. Through the weekend I have been running some additional tests of this compiler-based mitigation and in this article are some numbers off Cascade Lake Refresh, which while recently released is reported by Intel to still be vulnerable to this new disclosure.
KVM With Linux 5.7 Supporting Protected/Secure VM Guests For IBM POWER + s390 Both of IBM's s390 and POWER CPU architectures are seeing secure/protected guest virtual machine support with KVM on the in-development Linux 5.7 kernel...
XFS Working Towards Online Repair, Many Underlying Improvements While XFS dates back to the 90's and has been in the Linux kernel for nearly two decades, this proven file-system continues aging gracefully and continuing to see more improvements. With Linux 5.7 is another step forward for XFS...