The X86_NATIVE_CPU Kconfig build time parameter has been merged for the Linux 6.16 merge window as an easy way to enforce the “-march=native” compiler behavior on AMD and Intel processors to optimize kernel builds for your system's local CPU architecture/family. For those who want “-march=native” for Linux kernel builds on AMD/Intel x86_64 processors, you can easily include a new CONFIG_X86_NATIVE_CPU parameter to set this compiler behavior in local kernel builds. The CONFIG_X86_NATIVE_CPU parameter is considered when compiling the Linux x86_64 kernel with GCC or LLVM Clang when using Clang 19 or later due to a compiler bug in the Linux kernel in older compiler versions. In addition to setting the compiler parameter “-march=native” for Linux kernel C code, enabling this new Kconfig build parameter also sets “-Ctarget-cpu=native” for Rust kernel code.
max_parallel_downloads: This parameter specifies the maximum number of packages that DNF can load in parallel. The default value is usually 3 or 5, depending on your system. Decreasing the value: By decreasing the value of max_parallel_downloads, you will force DNF to load packages sequentially or in smaller groups. For example, by setting max_parallel_downloads=1, you will effectively disable parallel downloading and DNF will only download one package at a time. Speed Impact: Reducing max_parallel_downloads will cause the update process to slow down. In conclusion, reducing max_parallel_downloads is a perfectly logical way to reduce the number of DNF packages being loaded in parallel. Just be aware of the impact on speed and test different values to find the best one for your conditions.