From: Paul Eggert <eggert@cs.ucla.edu>
To: Lars Magne Ingebrigtsen <larsi@gnus.org>, Eli Zaretskii <eliz@gnu.org>
Cc: emacs-devel@gnu.org
Subject: Re: default large-file-warning-threshold (was: Generating the ChangeLog files ...)
Date: Sun, 30 Nov 2014 13:50:31 -0800 [thread overview]
Message-ID: <547B9127.2080508@cs.ucla.edu> (raw)
In-Reply-To: <m34mtg7d7s.fsf@stories.gnus.org>
Lars Magne Ingebrigtsen wrote:
> Do we have a way to ask the OS how much (physical-ish) RAM it has?
We could easily add that, using Gnulib's physmem module. For example, GNU
'sort' uses physmem to calculate an internal buffer size ranging from 1/8 to 3/4
of physical memory, depending on some other factors.
Eli Zaretskii wrote:
> It could also be a security feature.
It's largely a security feature insofar as it avoids denial-of-service problems,
and deriving the limit from physical memory capacity helps to avoid these
problems too.
The 10 MB limit is too small nowadays for typical machines. I regularly run
into it and it's a genuine (albeit minor) annoyance. When the 10 MB limit was
established back in 2003, machines typically had 64 MiB or so of RAM. Nowadays
8 GiB is closer to being typical and the 10 MB limit is way below the sweet spot
for warnings.
If we were conservative and warned about files larger than 1/8 of physical
memory, my circa-2011 8-GiB work desktop would warn about files larger than 1
GiB, and my circa-2005 512-MiB laptop would warn about files larger than 64 MiB,
and both numbers sound about right.
next prev parent reply other threads:[~2014-11-30 21:50 UTC|newest]
Thread overview: 90+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-14 14:39 Include necessary git tools in the Emacs distribution? Lars Magne Ingebrigtsen
2014-11-14 14:57 ` Tassilo Horn
2014-11-14 14:58 ` Eli Zaretskii
2014-11-14 16:13 ` Ulrich Mueller
2014-11-15 19:28 ` Lars Magne Ingebrigtsen
2014-11-15 20:04 ` Ulrich Mueller
2014-11-15 20:07 ` Lars Magne Ingebrigtsen
2014-11-15 20:34 ` Kelvin White
2014-11-15 20:35 ` Lars Magne Ingebrigtsen
2014-11-15 20:57 ` Ulrich Mueller
2014-11-15 21:45 ` Glenn Morris
2014-11-16 0:01 ` Lennart Borgman
2014-11-18 2:07 ` Rüdiger Sonderfeld
2014-11-18 2:15 ` Paul Eggert
2014-11-18 14:45 ` Generating the ChangeLog files from the commit messages (was: Include necessary git tools in the Emacs distribution?) Stefan Monnier
2014-11-18 14:59 ` Generating the ChangeLog files from the commit messages Ted Zlatanov
2014-11-18 16:22 ` Rüdiger Sonderfeld
2014-11-18 17:10 ` Glenn Morris
2014-11-18 17:40 ` Eli Zaretskii
2014-11-18 17:56 ` Paul Eggert
2014-11-18 20:32 ` Thien-Thi Nguyen
2014-11-18 21:12 ` Stefan Monnier
2014-11-18 22:05 ` Paul Eggert
2014-11-19 22:36 ` Richard Stallman
2014-11-20 0:15 ` Paul Eggert
2014-11-20 2:50 ` Yuri Khan
2014-11-20 3:15 ` Paul Eggert
2014-11-20 4:04 ` Yuri Khan
2014-11-20 20:12 ` Paul Eggert
2014-11-21 4:25 ` Kelvin White
2014-11-21 7:57 ` Paul Eggert
2014-11-19 9:03 ` Bastien
2014-11-19 9:11 ` Lars Magne Ingebrigtsen
2014-11-29 22:35 ` Paul Eggert
2014-11-30 0:23 ` Jan D.
2014-11-30 9:12 ` Jorgen Schaefer
2014-11-30 16:15 ` Paul Eggert
2014-11-30 18:11 ` Stefan Monnier
2014-11-30 18:23 ` Eli Zaretskii
2014-11-30 18:30 ` Lars Magne Ingebrigtsen
2014-11-30 20:32 ` Eli Zaretskii
2014-11-30 21:50 ` Paul Eggert [this message]
2014-11-30 23:19 ` default large-file-warning-threshold Óscar Fuentes
2014-11-30 23:22 ` Lars Magne Ingebrigtsen
2014-11-30 23:31 ` Óscar Fuentes
2014-12-01 5:46 ` Paul Eggert
2014-12-01 15:52 ` Eli Zaretskii
2014-12-01 18:13 ` Paul Eggert
2014-12-01 18:19 ` Lars Magne Ingebrigtsen
2014-12-01 18:24 ` Paul Eggert
2014-12-01 20:21 ` Ted Zlatanov
2014-12-01 20:32 ` Lars Magne Ingebrigtsen
2014-12-02 1:17 ` Ted Zlatanov
2014-12-02 5:07 ` Lars Magne Ingebrigtsen
2014-12-01 19:00 ` Eli Zaretskii
2014-12-01 17:06 ` Achim Gratz
2014-12-01 17:56 ` Eli Zaretskii
2014-12-01 18:33 ` David Kastrup
2014-12-01 19:12 ` Eli Zaretskii
2014-12-01 19:15 ` Eli Zaretskii
2014-12-01 20:47 ` Rasmus
2014-12-01 19:15 ` default large-file-warning-threshold (was: Generating the ChangeLog files ...) Richard Stallman
2014-12-02 5:15 ` default large-file-warning-threshold Lars Magne Ingebrigtsen
2014-12-01 3:24 ` Generating the ChangeLog files from the commit messages Stefan Monnier
2014-12-01 3:39 ` Eli Zaretskii
2014-12-01 5:49 ` Paul Eggert
2014-12-01 7:45 ` H. Dieter Wilhelm
2014-11-30 16:35 ` Lars Magne Ingebrigtsen
2014-11-19 9:02 ` Bastien
2014-11-19 9:38 ` Rasmus
2014-11-19 11:17 ` Bastien
2014-11-19 13:34 ` Óscar Fuentes
2014-11-19 13:50 ` Bastien
2014-11-19 16:29 ` Yuri Khan
2014-11-19 16:43 ` Eli Zaretskii
2014-11-19 16:52 ` Yuri Khan
2014-11-19 18:49 ` Eli Zaretskii
2014-11-20 2:54 ` Yuri Khan
2014-11-20 9:38 ` Bastien
2014-11-20 9:33 ` Bastien
2014-11-20 9:31 ` Bastien
2014-11-19 16:43 ` David Engster
2014-11-19 22:21 ` Stefan Monnier
2014-11-19 22:51 ` David Engster
2014-11-21 10:03 ` Eli Zaretskii
2014-11-21 16:19 ` David Engster
2014-11-21 16:58 ` Eli Zaretskii
2014-11-21 17:19 ` Stefan Monnier
2014-11-21 17:21 ` David Engster
2014-11-19 16:54 ` Include necessary git tools in the Emacs distribution? David Engster
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