Re: master e245c4f226: Add --with-native-compilation=aot configuration option

Re: master e245c4f226: Add --with-native-compilation=aot configuration option

[Lars Ingebrigtsen]

Lars Ingebrigtsen <larsi@gnus.org> writes:

>     Add --with-native-compilation=aot configuration option

I thought it might be interesting to look at some compilation numbers.

On "master", a non-native bootstrap build takes:

real	1m9.038s
user	10m7.189s

--with-native-compilation takes:

real	1m50.159s
user	15m56.087s

--with-native-compilation=aot (full ahead-of-time build) takes:

real	3m31.860s
user	55m17.325s

So there's a bigger percentage jump from non-native to native, than
there is from native to AOT.  (On this machine; as you can see from the
"user" numbers, the CPU usage tells a somewhat different story.)

Interestingly, the full AOT on "master" on this machine is now faster
than a --with-native-compilation on the emacs-28 branch:

real	4m3.930s
user	36m49.549s

Re: master e245c4f226: Add --with-native-compilation=aot configuration option

[Lars Ingebrigtsen]

Lars Ingebrigtsen <larsi@gnus.org> writes:

> So there's a bigger percentage jump from non-native to native, than
> there is from native to AOT. 

Er...  I shouldn't do such incredibly complicated maths in my head.