From: Stefan Monnier <monnier@iro.umontreal.ca>
To: Daniel Colascione <dancol@dancol.org>
Cc: "Eric S. Raymond" <esr@thyrsus.com>,
stephen@xemacs.org, Emacs developers <emacs-devel@gnu.org>
Subject: Re: Time to drop the pre-dump phase in the build?
Date: Sat, 11 Jan 2014 00:13:09 -0500 [thread overview]
Message-ID: <jwv8uun2jo9.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <52D0BC7C.2000700@dancol.org> (Daniel Colascione's message of "Fri, 10 Jan 2014 19:37:32 -0800")
> Another possibility is to just allocate enough space in the emacs image
> itself in BSS, then replace that mapping with a view of the dump file.
Indeed, that should work, assuming you can mmap into existing space.
> image base). Or we can make the dump file a section in the image, but at
> that point, we're starting to talk about portability problems again.
But not nearly as bad: the main dump problem we have is with generating
the `emacs' executable, whereas here we'd only need to generate the
"swap file" which is later loaded into the same executable.
Should still be a lot more portable.
> By the way: is it me, or are we dirtying far too much of the current emacs
> image? On my Emacs, we're dirtying (and COWing) 8MB; if I make
> Fgarbage_collect a no-op, that drops to 4MB.
For sure, GC will dirty up pretty much all pages that hold Lisp objects
(except for those in the purespace), because of the need to set/reset
the `mark' bit.
Stefan
next prev parent reply other threads:[~2014-01-11 5:13 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-10 19:15 Time to drop the pre-dump phase in the build? Eric S. Raymond
2014-01-10 19:49 ` Eli Zaretskii
2014-01-11 6:16 ` Paul Eggert
2014-01-11 7:17 ` Richard Stallman
2014-01-12 0:16 ` Nix
2014-01-12 3:48 ` Eli Zaretskii
2014-01-12 3:53 ` Eric S. Raymond
2014-01-11 7:17 ` Richard Stallman
2014-01-10 19:51 ` Stefan Monnier
2014-01-10 20:09 ` Eric S. Raymond
2014-01-10 20:13 ` Eli Zaretskii
2014-01-10 20:20 ` Barry Warsaw
2014-01-10 20:30 ` Eli Zaretskii
2014-01-10 21:06 ` Barry Warsaw
2014-01-10 22:19 ` Daniel Colascione
2014-01-10 22:58 ` David Kastrup
2014-01-11 0:05 ` Daniel Colascione
2014-01-10 23:23 ` Stefan Monnier
2014-01-11 0:07 ` Daniel Colascione
2014-01-11 2:58 ` Stefan Monnier
2014-01-11 3:37 ` Daniel Colascione
2014-01-11 5:13 ` Stefan Monnier [this message]
2014-01-11 5:30 ` Daniel Colascione
2014-01-11 16:14 ` Stephen J. Turnbull
2014-01-11 20:13 ` Glenn Morris
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