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Kernel: Threading, Streebog, USB 3.0, "Thermal Pressure" and More

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Linux
  • A Look At Linux Application Scaling Up To 128 Threads

    Arriving last week in our Linux benchmarking lab was a dual EPYC server -- this Dell PowerEdge R7425 is a beast of a system with two AMD EPYC 7601 processors yielding a combined 64 cores / 128 threads, 512GB of RAM (16 x 32GB DDR4), and 20 x 500GB Samsung 860 EVO SSDs. There will be many interesting benchmarks from this server in the days and weeks ahead. For some initial measurements during the first few days of stress testing this 2U rack server, here is a look at how well various benchmarks/applications are scaling from two to 128 threads.

  • Linux Kernel Patches Posted For Streebog - Crypto From Russia's FSB

    Just months after the controversial Speck crypto code was added to the Linux kernel that raised various concerns due to its development by the NSA and potential backdoors, which was then removed from the kernel tree, there is now Russia's Streebog that could be mainlined.

    The Streebog cryptographic hash was developed by Russia's controversial FSB federal security service and other Russian organizations. Streebog is a Russian national standard and a replacement to their GOST hash function. Streebog doesn't have as much controversy as NSA's Speck, but then again it's not as well known but there is are some hypothetical attacks and some papers have questioned some elements of the design. Streebog is considered to be a competitor to the SHA-3 standard from the NIST.

  • The Linux Kernel In 2018 Finally Deems USB 3.0 Ubiquitous Rather Than An Oddity

    The latest news in the "it's about darn time" section is the Linux kernel's default i386/x86_64 kernel configurations will finally ship with USB 3.0 support enabled, a.k.a. CONFIG_USB_XHCI_HCD.

    For many years now pretty much all Linux distribution vendor kernels have been shipping with CONFIG_USB_XHCI_HCD enabled either built-in or as a module... But built-in is pretty much the best to avoid potential issues at start-up time. As of this week, CONFIG_USB_XHCI_HCD=y is finally set for the default configurations on the x86/x86_64-based kernel builds should you be spinning up a defconfig kernel.

  • "Thermal Pressure" Kernel Feature Would Help Linux Performance When Running Hot

    Linaro engineer Thara Gopinath sent out an experimental set of kernel patches today that introduces the concept of "thermal pressure" to the Linux kernel for helping assist Linux performance when the processor cores are running hot.

    While the Linux CPU frequency scaling code already deals with the event of CPU core(s) overheating as to downclock/limit the frequency, the kernel's scheduler isn't currently aware of the CPU capacity restrictions put in place due to that thermal event.

  • Containers are Linux

    Linux is the core of today’s operating system open source software development, and containers are a core feature of Linux. Linux containers and the Kubernetes community supporting them enable agencies to quickly stand up, distribute and scale applications in the hybrid clouds supporting the IT architecture of today’s digitally transformed government.

    But agencies need more than the speed and flexibility of containers and the power of Kubernetes to take full advantage of today’s hybrid cloud environment. They need open source enterprise software with full lifecycle support and a full complement of hardware certifications to ensure portability across platforms.

More in Tux Machines

Linux 4.20--rc76

Well, that's more like it. This is a *tiny* rc7, just how I like it. Maybe it's because everybody is too busy prepping for the holidays, and maybe it's because we simply are doing well. Regardless, it's been a quiet week, and I hope the trend continues. The patch looks pretty small too, although it's skewed by a couple of bigger fixes (re-apply i915 workarounds after reset, and dm zoned bio completion fix). Other than that it's mainly all pretty small, and spread out (usual bulk of drivers, but some arch updates, filesystem fixes, core fixes, test updates..) Read more Also: Linux 4.20-rc7 Kernel Released - Linux 4.20 Should Be Released In Time For Christmas

Android Leftovers

1080p Linux Gaming Performance - NVIDIA 415.22 vs. Mesa 19.0-devel RADV/RadeonSI

Stemming from the recent Radeon RX 590 Linux gaming benchmarks were some requests to see more 1080p gaming benchmarks, so here's that article with the low to medium tier graphics cards from the NVIDIA GeForce and AMD Radeon line-up while using the latest graphics drivers on Ubuntu 18.10. This round of benchmarking was done with the GeForce GTX 980, GTX 1060, GTX 1070, and GTX 1070 Ti using the newest 415.22 proprietary graphics driver. On the AMD side was using the patched Linux 4.20 kernel build (for RX 590 support) paired with Mesa 19.0-devel via the Padoka PPA while testing the Radeon RX 580 and RX 590. Read more

Sparky SU 0.1.0

This tool provides Yad based front-end for su (spsu) allowing users to give a password and run graphical commands as root without needing to invoke su in a terminal emulator. It can be used as a Gksu replacement to run any application as root. Read more