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Re: Time to drop the pre-dump phase in the build?

From: Glenn Morris
Subject: Re: Time to drop the pre-dump phase in the build?
Date: Sat, 11 Jan 2014 15:13:13 -0500
User-agent: Gnus (www.gnus.org), GNU Emacs (www.gnu.org/software/emacs/)

Stefan Monnier wrote:

>> That's why the XEmacs portable dumper is better than the current Emacs
>> setup.
> Right, a portable dumper would be nice to have.
> Tho I don't know enough of the details to know what are the downsides
> (e.g. does it require relocation?  If so that means the file can't just
> be mmap'd read-only and shared between processes, right?).

Apparently there was an Emacs 21 patch, but AFAIK it never appeared:


And it broke in 22:

If you read Japanese (I don't), there's a paper at:
  (Has some startup times listed!)

Source:  http://www.sodan.org/~knagano/emacs/pdump

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