December 15, 2025, 2:14 AM EST. In early Linux 6.19 benchmarks, a 2P AMD EPYC 9965 system (384 cores / 768 threads) on a Volcano reference platform was tested against Linux 6.18 stable. With Ubuntu 25.10 defaults, the author notes scheduler regressions and slower build times on 6.19-rc1, echoing Phoronix findings. Nonetheless, in AI/HPC workloads, Linux 6.19 Git shows gains: Incompact3D and other HPC tests improve; Altair OpenRadioss benefits are significant; OpenFOAM CFD shows improvements; PostgreSQL 18 and ClickHouse also look promising. The same kernel configuration was used, varying only the kernel version. More hardware tests across workloads are planned as Linux 6.19 approaches a February stable release.
