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Date: Fri, 11 Mar 2022 16:22:18 -0800
From: Gary Johnson <garyjohn@spocom.com>
To: cygwin@cygwin.com
Subject: Re: Bash runs my vim slower than Cygwin's vim
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On 2022-03-11, Gary Johnson wrote:
> On 2022-03-11, Gary Johnson wrote:
> > On 2022-03-11, Adam Dinwoodie wrote:
> > > On Thu, Mar 10, 2022 at 04:55:40PM -0800, Gary Johnson wrote:
> 
> > > > So, does anyone know why is takes so much longer for bash to run the
> > > > vim I built than the official Cygwin vim?  More importantly, how do
> > > > I fix this?
> 
> > > - Cygwin packages built using Cygport and packaged for release will have
> > >   the binaries stripped, removing debug symbols and the like and
> > >   separating them into a different -debug package.  That means that the
> > >   binaries that are loaded for day-to-day use are smaller, and may well
> > >   mean they're faster too.
> > 
> > The Cygwin vim was built with -ggdb, but I didn't look for strip and
> > Cygwin's file doesn't report whether or not binaries are stripped--
> > it probably can't determine that.  I'll try stripping mine.
> 
> Just a quick update:  I stripped my version and the real time for my
> benchmark test dropped from 1.42 s to 0.40 s.  Still not as low as
> Cygwin's vim (0.12 s), but a substantial improvement.

I installed cygport and built vim using Adam's command.  It wanted
some libraries that I don't have installed, such as for X, which
I don't use on Windows, so I modified vim.cygport to not require
those.  The result ran a little slower than /usr/bin/vim.  So to
really understand this, I will probably have to install those
libraries and run vim.cygport unmodified.

However, by changing CFLAGS to remove -g3 and add -O2 for my own
build, and by stripping the binary, the startup time for vim to edit
a particular file dropped from 8 seconds to 2 seconds, and even
using /usr/bin/vim takes 1.4 seconds, so I'm happy for now.

Thanks, Adam, for the help.

Regards,
Gary


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