Ringing In 2020 By Clang'ing The Linux 5.5 Kernel - Benchmarks Of GCC vs. Clang Built Kernels
Written by Michael Larabel in Software on 31 December 2019. Page 4 of 5. 17 Comments

PostgreSQL when running on the Clang-built kernel did appear to have a slight advantage over the traditional GCC-built Linux kernel.

Some of the Stress-NG kernel micro-benchmarks also were siding with the Clang-built kernel but with some exceptions.

The context switching time measured by ctx_clock was slightly faster with the GCC-built kernel.

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