On 12.01.17 16:05:36, Will Deacon wrote:

On Mon, Jan 09, 2017 at 12:53:20PM +0100, Robert Richter wrote:

quoted

Kernel compile times (3 runs each):

pfn_valid_within():

real    6m4.088s
user    372m57.607s
sys     16m55.158s

real    6m1.532s
user    372m48.453s
sys     16m50.370s

real    6m4.061s
user    373m18.753s
sys     16m57.027s

Did you reboot the machine between each build here, or only when changing
kernel? If the latter, do you see variations in kernel build time by simply
rebooting the same Image?

I built it in a loop on the shell, so no reboots between builds. Note
that I was building the kernel in /dev/shm to not access harddisks. I
think build times should be comparable then since there is no fs
caching.

-Robert