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Red Hat Developing "eu-stacktrace" For Profiling Without Frame Pointers

While last year we saw Fedora to no longer omit the frame pointer to help in debugging/profiling Fedora packages and Ubuntu 24.04 LTS also enabled frame pointers for better debugging/profiling, among other distributions, there is the known performance implications of no longer omitting the frame pointer. But now in aiming to make the best of both worlds, it turns out Red Hat has been developing eu-stracktrace as a new means of profiling without relying on frame pointers...

AMD P-State Linux Patches Updated For Heterogeneous CPUs

Last month AMD Linux engineers posted ap atch series for better handling heterogeneous core type CPUs. This is for enhancing the P-State CPU frequency scaling on CPUs featuring a mix of conventional cores and efficiency cores, e.g. Zen 4 and Zen 4C. A third iteration of these patches were posted today...

oneAPI-Focused UXL Foundation Now Collaborating With The Khronos Group

Last year it was announced that Intel's oneAPI software initiative evolved into the UXL Foundation for making compute accelerators more open as well as opening things up to more cross-vendor collaboration and adoption. Intel started the Unified Acceleration Foundation with the Linux Foundation, Google, Arm, Qualcomm, Samsung, and others. Announced today is that the UXL Foundation has begun collaborating with The Khronos Group...

One-Line Patch For Intel Meteor Lake Yields Up To 72% Better Performance, +7% Geo Mean

Covered last week on Phoronix was a new patch from Intel that with tuning to the P-State CPU frequency scaling driver was showing big wins for Intel Core Ultra "Meteor Lake" performance and power efficiency. I was curious with the Intel claims posted for a couple benchmarks and thus over the weekend set out to run many Intel Meteor Lake benchmarks on this one-line kernel patch... The results are great for boosting the Linux performance of Intel Core ultra laptops with as much as 72% better performance.

AMD Posts New Linux Patches For Per-Core CPU Energy Counters

After an attempt in early 2023 didn't pan out, today an AMD Linux engineer posted a new kernel patch series for enabling per-core RAPL energy counter support for AMD processors. With this patch series when using Linux's venerable perf utility it's now possible for reading the power use on a per CPU core basis using a new "power_per_core" PMU...
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