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today's leftovers

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  • AMDGPU DC Gets "PERF_TRACE" To Help With Performance Profiling

    Published on Wednesday was the latest batch of AMDGPU DC display code changes for its eventual inclusion into the AMDGPU DRM driver for mainline past the 4.20~5.0 cycle with that feature merge window being over. The most notable change with this latest AMDGPU DC haul is a new "PERF_TRACE" addition.

    The 26 patches sent out on Wednesday refactor the DCE clock code as well as the DC to SMU interface. Most interesting to us though is this PERF_TRACE feature on Linux. This PERF_TRACE functionality isn't to be confused with the perf subsystem nor the perf-trace user-space utility.

  • Removing my favorite feature

    So in a decision that was long overdue, I’m removing the real-time graph from Builder 3.32. I never did a great job of porting that code to optimal Wayland use anyway. It was really designed with Xrender/Xshm in mind where XCopyArea() was cheap and done on the GPU.

  • Debian/TeX Live updates 20181009

    During this update some color profiles (icc) that had unclear licenses have been removed, which for now creates problems with the pdfx package. So if you use the pdfx package, please explicitly specify a color profile. The next upload will again allow using pdfx without specifying a profile in which case a default profile is used. I have uploaded already a set of free profiles to CTAN and they arrived in TeX Live, but pdfx package isn’t updated till now.During this update some color profiles (icc) that had unclear licenses have been removed, which for now creates problems with the pdfx package. So if you use the pdfx package, please explicitly specify a color profile. The next upload will again allow using pdfx without specifying a profile in which case a default profile is used. I have uploaded already a set of free profiles to CTAN and they arrived in TeX Live, but pdfx package isn’t updated till now.

More in Tux Machines

Five-Way Linux OS Comparison On Amazon's ARM Graviton CPU

Last month Amazon rolled out their "Graviton" ARM processors in the Elastic Compute Cloud. Those first-generation Graviton ARMv8 processors are based on the ARM Cortex-A72 cores and designed to offer better pricing than traditional x86_64 EC2 instances. However, our initial testing of the Amazon Graviton EC2 "A1" instances didn't reveal significant performance-per-dollar benefits for these new instances. In this second round of Graviton CPU benchmarking we are seeing what is the fastest of five of the leading ARM Linux distributions. An Amazon EC2 a1.4xlarge instance with 16 cores / 32GB RAM was used for this round of benchmarking across the five most common ARM Linux distributions that were available at the time of testing on the Elastic Compute Cloud. The tests included: Amazon Linux 2 - The reference Amazon Linux machine image with the Linux 4.14 kernel and GCC 7.3. Read more

Take a swim at your Linux terminal with asciiquarium

We're now nearing the end of our 24-day-long Linux command-line toys advent calendar. Just one week left after today! If this is your first visit to the series, you might be asking yourself what a command-line toy even is. We’re figuring that out as we go, but generally, it could be a game, or any simple diversion that helps you have fun at the terminal. Read more

Photography and Linux

So, as you can see, except for the printing step, pretty much the whole workflow is handled very easily by Linux and open-source photography software. Could I have done the whole thing in Linux? Yes and no. Depending on your printing needs, you could forego the printer entirely and use a local professional printing service. Many of those shops use the ROES system for the uploading and management of images to be printed. The ROES client is written in Java and is compatible with Linux. If you invest in a large format printer, you may have to investigate using a solution similar to what I have set up. Open-source software RIPs exist, but they have not been updated for more than a decade. Some commercial Linux solutions are available, but they are prohibitively expensive. Read more

Linux 3.18.130

I'm announcing the release of the 3.18.130 kernel. All users of the 3.18 kernel series must upgrade. The updated 3.18.y git tree can be found at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git linux-3.18.y and can be browsed at the normal kernel.org git web browser: http://git.kernel.org/?p=linux/kernel/git/stable/linux-st... Read more