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Re: bug#18752: 24.3.94; Why is Cygwin Emacs 2x quicker than Windows Emacs?
- From: Fabrice Niessen <fni-news at pirilampo dot org>
- To: Eli Zaretskii <eliz at gnu dot org>
- Cc: 18752 at debbugs dot gnu dot org, cygwin at cygwin dot com, dmoncayo at gmail dot com
- Date: Sat, 18 Oct 2014 08:51:12 +0200
- Subject: Re: bug#18752: 24.3.94; Why is Cygwin Emacs 2x quicker than Windows Emacs?
- Authentication-results: sourceware.org; auth=none
- References: <86h9z2rb42 dot fsf at example dot com> <83siim1z6h dot fsf at gnu dot org> <86iojimmjg dot fsf at example dot com> <83wq7ydjc7 dot fsf at gnu dot org>
Eli Zaretskii wrote:
> Fabrice Niessen wrote:
>>> You also forgot to tell what compiler options were used for each
>>> build. E.g., if the Cygwin build is optimized, whereas the MinGW
>>> build is not, the twofold speedup is expected (I generally see
>>> a factor of 2.5 between an optimized and unoptimized build).
>> I have no idea how Cygwin Emacs gets compiled, nor Windows Emacs
>> (done by Dani). Putting them in Cc.
> As Ken points out, the variable system-configuration-options is the
> way to tell.
On my Windows Emacs:
"--enable-checking 'CFLAGS=-O0 -g3' CPPFLAGS=-DGLYPH_DEBUG=1"
> Given that the Cygwin build is optimized, it suffices to show that the
> MinGW one isn't, to explain the difference in speed.
Dani, can you build an optimized version as well next time?
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