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Kernel: BOLT, OpenZFS, and Latency-Related Work

Submitted by Roy Schestowitz on Saturday 25th of September 2021 07:16:16 PM Filed under
Linux
  • Facebook Has Been Working On BOLT'ing The Linux Kernel For Greater Performance - Phoronix

    For several years now Facebook engineers have been working on BOLT as a way to speed-up Linux/ELF binaries. This "Binary Optimization and Layout Tool" is able to re-arrange executables once profiled to generate even faster performance than what can be achieved by a compiler's LTO and PGO optimizations. One of the latest BOLT efforts has been on optimizing the Linux kernel image.

  • OpenZFS 2.0.6 Released With Support For Newer Kernels

    While the OpenZFS 2.1 feature release has been available since July, for those still using the OpenZFS 2.0.x series and not yet prepared to make the jump to that big new release with dRAID and other changes, OpenZFS 2.0.6 was released this week.

    OpenZFS 2.0.6 is another maintenance release for those not migrating yet to the v2.1 series. OpenZFS 2.0.6 most notably brings support for newer versions of the Linux kernel: OpenZFS 2.0.5 supported up through Linux 5.12 while OpenZFS 2.0.6 now supports Linux 5.13/5.14 plus some early 5.15 compatibility patches.

  • Intel's User Interrupts With Sapphire Rapids Looking Quite Great For Faster IPC - Phoronix

    Earlier this month Intel engineers posted their initial Linux kernel enablement around x86 User Interrupts with this feature premiering with Xeon "Sapphire Rapids" CPUs. As implied by the name, the User Interrupt functionality allows for interrupts to bypass the kernel for more efficient, low-latency, low-utilization interrupts being received by other user-space tasks. Intel talked more about User Interrupts this week at LPC2021.

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