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Linux Kernel and Graphics: Jprobes, Performance Analysis in Linux, AMDGPU, UHD Graphics and Vulkan

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Graphics/Benchmarks
Linux
  • An end to jprobes

    "Jprobes" are an ancient kernel mechanism used to trace entry into kernel functions; they were described in this 2005 LWN article.

  • Performance analysis in Linux (continued)

    This blog post is based on the talk I gave at the Open Source Summit North America 2017 in Los Angeles. Let me start by thanking my employer Collabora, for sponsoring my trip to LA.

    Last time I wrote about Performance Assessment, I discussed how an apparently naive code snippet can hide major performance drawbacks. In that example, the issue was caused by the randomness of the conditional branch direction, triggered by our unsorted vector, which really confused the Branch Predictor inside the processor.

  • AMDGPU's DC Gets More Cleanups Ahead Of Linux 4.15

    It's indeed looking like the AMDGPU DC display code stack will finally be pulled for the Linux 4.15 merge window, assuming Linus Torvalds has no issues with it in a few weeks.

    Alex Deucher of AMD today sent in a secondary AMDGPU DC update for staging alongside DRM-Next of this new display code.

  • Running OpenCL With Intel UHD Graphics On Coffeelake Under Ubuntu Linux

    After running some basic OpenCL/Vulkan UHD Graphics tests yesterday using the brand new Core i7 8700K "Coffee Lake" processor, I next ventured into OpenCL computing with the UHD Graphics using Intel's open-source Beignet CL implementation.

  • VK_KHR_maintenance2 Lands For RADV, Other Improvements

    VK_KHR_maintenance2 is the latest extension supported by this open-source Radeon Vulkan driver. VK_KHR_maintenance2 was added in Vulkan 1.0.61 last month as various changes that were previously left out of Vulkan.

  • Intel UHD Graphics 630 "Coffee Lake" On Linux

    This morning I delivered the initial Linux processor benchmarks of the Core i7 8700K and Core i5 8400 for the just-launched "Coffee Lake" desktop processors. With these Intel "Gen 8" processors, the integrated "HD Graphics" from Kabylake have been rebranded to "UHD Graphics". While there wasn't any real changes architecturally to the graphics hardware, right now the Linux support isn't quite out-of-the-box.

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