Out of curiosity I tried in my build-environment and my testing-rules to have comparable numbers...
..without passing "V=1" and "KBUILD_VERBOSE=1" as make-options: NOTE: Identical linux-config plus LLVM/Clang v12.0.0-rc3. debian-5.10.19 as host-kernel: 11655.755564957 seconds time elapsed dileks-5.12-rc3 plus x86-nops as host-kernel: 11941.439350080 seconds time elapsed I compared the build-times only: Approx. 04:45 [mm:ss] in the worst case. ( Brewing time of a strong Turkish tea-bag ~5mins. ) I will keep both make-options to see what's going on in my builds. - Sedat -