A Nasty Performance Regression For Some Intel Systems Wound Up In Linux 6.5 Stable

Written by Michael Larabel in Software on 13 September 2023 at 04:00 PM EDT. Page 4 of 6. 5 Comments.
uvg266 benchmark with settings of Video Input: Bosphorus 4K, Video Preset: Very Fast. Linux 6.4.14 was the fastest.
uvg266 benchmark with settings of Video Input: Bosphorus 4K, Video Preset: Super Fast. Linux 6.4.14 was the fastest.
uvg266 benchmark with settings of Video Input: Bosphorus 1080p, Video Preset: Very Fast. Linux 6.4.14 was the fastest.
VVenC benchmark with settings of Video Input: Bosphorus 4K, Video Preset: Faster. Linux 6.4.14 was the fastest.
VVenC benchmark with settings of Video Input: Bosphorus 1080p, Video Preset: Faster. Linux 6.4.14 was the fastest.
x265 benchmark with settings of Video Input: Bosphorus 4K. Linux 6.4.14 was the fastest.

Nearly all of the video encoding workloads suffered brutal losses on Linux 6.5 with the Intel Core i9 13900K test system.

7-Zip Compression benchmark with settings of Test: Compression Rating. Linux 6.4.14 was the fastest.
7-Zip Compression benchmark with settings of Test: Decompression Rating. Linux 6.4.14 was the fastest.

Other multi-threaded workloads like 7-Zip compression also were slower on Linux 6.5.


Related Articles
Intel Core Ultra "Meteor Lake" Performance Improves With Linux 6.9
GCC 14 vs. LLVM Clang 18 Compiler Performance On Fedora 40
Intel Xeon Max Sees Some Performance Gains For OpenVINO & ONNX With Linux 6.9
Linux 6.9 Drives AMD 4th Gen EPYC Performance Even Higher For Some Workloads
Intel Core Ultra "Meteor Lake" Yields Faster Performance With Linux 6.9
Google Cloud's C3D Instances Provide Strong Performance Value For PingCAP's TiDB