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Re: Two strange messages while building Emacs on MS-Windows


From: Dani Moncayo
Subject: Re: Two strange messages while building Emacs on MS-Windows
Date: Mon, 10 Dec 2012 21:57:32 +0100

> The mystery still stands.
>
> I suggest to separate variables here, and time the byte compilation
> alone.  Try this:
>
>   cd lisp
>   find . -name "*.elc" -delete
>   make compile
>
> and time the last command.
>
> With the current trunk, you can do "make -j6 compile" instead of the
> last command, and it should be about 3 to 4 times faster.

"mingw32-make [-j4] compile" takes:
  - With revno 111165 (before your changes in `lisp/makefile.w32-in'):
    . without "-jN": 15:57
    . with -j4: 15:34
  - With revno 111175:
    . without "-jN": 16:21
    . with -j4: 6:23


A full bootstrap with "-j4" (of the last trunk) has taken 13:53.

So it seems that I've got an speedup of 50% approximately.  (Not bad!)

And for the record, from a MSYS bash:

  $ time /c/emacs/trunk/bin/emacs --batch --eval '(message "Hello")'
  Hello

  real    0m1.189s
  user    0m0.031s
  sys     0m0.000s



-- 
Dani Moncayo



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