From: David Kuehling <dvdkhlng@gmx.de>
To: Ken Raeburn <raeburn@raeburn.org>
Cc: Eli Zaretskii <eliz@gnu.org>, rms@gnu.org, emacs-devel@gnu.org
Subject: Re: Some OpenWrt port related problems
Date: Sun, 02 Jan 2011 14:53:47 +0100 [thread overview]
Message-ID: <87pqsfcsyc.fsf@snail.Pool> (raw)
In-Reply-To: <52B2D62A-17C0-4D11-9B48-8C9D0436807A@raeburn.org> (Ken Raeburn's message of "Sat, 1 Jan 2011 20:35:45 -0500")
[-- Attachment #1: Type: text/plain, Size: 2152 bytes --]
>>>>> "Ken" == Ken Raeburn <raeburn@raeburn.org> writes:
> On Jan 1, 2011, at 10:34, Eli Zaretskii wrote:
>>> From: David Kuehling <dvdkhlng@gmx.de> Date: Sat, 01 Jan 2011
>>> 15:20:58 +0100 Cc: rms@gnu.org, Emacs Dev <emacs-devel@gnu.org>
>>> Finding pointers to doc strings...done emacs: Can't allocate buffer
>>> for /usr/bin/emacs
>>>
>>> So it wants to pull a full copy of the emacs binary into memory?
>>
>> It tries to mmap it, yes:
> Contrary to the comment in unexelf.c saying "We do not use mmap
> because that fails with NFS." :-)
> Perhaps we could reduce the memory requirement a bit by (in the ELF
> case) mapping the ELF header and read-only sections as shared,
> read-only data, so the process wouldn't need space from the OS for
> private modifications to those pages.
Well, if those pages are not modified, no memory is needed from the OS
anyway (i.e. copy-on-write/lazy copy). Just that linux VM manager seems
to usually check whether it has enough pages just-in-case.
Similar problems seem to crop up with fork();exec() inside emacs. So
enabling overcommitting on the NanoNote may be a good thing in general.
[..]
> I did a MIPS32 (Lemote laptop) GNU/Linux build of the latest alpha
> snapshot; no error was produced. According to "readelf -e", temacs
> has no .sbss section. The on-disk part of segment 4 does end at the
> start of BSS, and it's the segment with the highest memory address
> (not file offset) overall, so there's nothing mapped higher than the
> BSS. So I'm afraid I can't help much, at least without more info
> (e.g., "readelf -e temacs", to see how it's different from mine). And
> I'm not sure I know enough about the linker view on MIPS to help
> anyways.
$ readelf -t /usr/bin/emacs
There are no sections in this file.
:)
Could it be that 'sstrip' (that's no typo, it's not vanilla 'strip')
used for openwrt packages causes collateral damage here? Emacs won't be
the only package effected.
David
--
GnuPG public key: http://user.cs.tu-berlin.de/~dvdkhlng/dk.gpg
Fingerprint: B17A DC95 D293 657B 4205 D016 7DEF 5323 C174 7D40
[-- Attachment #2: Type: application/pgp-signature, Size: 189 bytes --]
next prev parent reply other threads:[~2011-01-02 13:53 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-28 10:15 Some OpenWrt port related problems David Kuehling
2010-12-28 19:36 ` Stefan Monnier
2010-12-28 21:12 ` David Kuehling
2010-12-28 22:02 ` Stefan Monnier
2010-12-29 9:37 ` David Kuehling
2010-12-29 7:47 ` Richard Stallman
2010-12-29 9:28 ` David Kuehling
2010-12-30 4:08 ` Ken Raeburn
2011-01-01 14:20 ` David Kuehling
2011-01-01 15:06 ` Andreas Schwab
2011-01-01 15:34 ` Eli Zaretskii
2011-01-02 1:35 ` Ken Raeburn
2011-01-02 13:53 ` David Kuehling [this message]
2011-01-02 14:44 ` Stefan Monnier
2011-01-02 14:55 ` David Kuehling
2011-01-02 20:35 ` Ken Raeburn
2011-01-02 21:12 ` David Kuehling
2011-01-03 9:32 ` David Kuehling
2010-12-30 16:06 ` Richard Stallman
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=87pqsfcsyc.fsf@snail.Pool \
--to=dvdkhlng@gmx.de \
--cc=eliz@gnu.org \
--cc=emacs-devel@gnu.org \
--cc=raeburn@raeburn.org \
--cc=rms@gnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this external index
https://git.savannah.gnu.org/cgit/emacs.git
https://git.savannah.gnu.org/cgit/emacs/org-mode.git
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.