Re: first bisection step takes quite a while

>
> Hello,
>
> today I did a bisection in the kernel repository:
>
>         linux$ git version
>         git version 2.47.1
>
>         linux$ time git bisect start 09fbf3d502050282bf47ab3babe1d4ed54dd1fd8 96d8eab5d0a1a9741a4cae1b3c125d75d1aabedf
>         Bisecting: 572238 revisions left to test after this (roughly 19 steps)
>         [eafdca4d7010a0e019aaaace3dd71b432a69b54c] Merge tag 'staging-4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
>
>         real    18m41.374s
>         user    27m18.306s
>         sys     1m0.565s
>
> I was surprised that it took that long to find and checkout the first
> revision to check. (That is on a 4 x Intel(R) Core(TM) i5-6440HQ CPU @
> 2.60GHz, 16 GiB RAM with a Samsung SSD. On a different machine (56 x
> Intel(R) Xeon(R) CPU E5-2660 v4 @ 2.00GHz, 256 GiB RAM and (I think a
> spinning hard disk)) it took nearly an hour.