GNU logs - #31862, boring messages

Message sent to bug-gnu-emacs@HIDDEN:

Subject: bug#31862: 26.1; [feature request] Improve copying over a network connection in dired
Resent-From: Christoph Michelbach <michelbach94@HIDDEN>
Original-Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org>
Resent-CC: bug-gnu-emacs@HIDDEN
Resent-Date: Sat, 16 Jun 2018 18:24:01 +0000
Resent-Message-ID: <handler.31862.B.15291734219538 <at> debbugs.gnu.org>
Resent-Sender: help-debbugs@HIDDEN
To: 31862 <at> debbugs.gnu.org
Message-ID: <1529173406.941.8.camel@HIDDEN>
From: Christoph Michelbach <michelbach94@HIDDEN>
Date: Sat, 16 Jun 2018 20:23:26 +0200
Content-Type: text/plain; charset="UTF-8"
Mime-Version: 1.0
Content-Transfer-Encoding: 7bit
Precedence: list
Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org
Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org>

I noticed that copying many files via dired takes a lot of time when it's done
over a network connection. This seems to be because every single file is
compressed and then transmitted in sequence.

To illustrate the problem: Create files on a server using these commands:

mkdir /tmp/dir
cd /tmp/dir
dd if=/dev/urandom bs=1K count=10000 of=bigFile
mkdir smallFiles
cd smallFiles
for i in {0..9999}; do dd if=/dev/urandom bs=1K count=1 of="smallFile""$i"; done

Then copy the files over to your local machine using dired.

Copying the big file took 5 seconds (including user interaction) via my network
connection. Copying the small files with the same amount of data took almost 20
minutes.

Can't you simply compress and transfer several small files at once (up to some
limit so the server doesn't run out of RAM)?

Of course copying small files takes longer than copying a big one of the same
size as the small ones combined but this disparity is just way out of
proportion.

Message sent:

Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable
MIME-Version: 1.0
X-Mailer: MIME-tools 5.505 (Entity 5.505)
Content-Type: text/plain; charset=utf-8
X-Loop: help-debbugs@HIDDEN
From: help-debbugs@HIDDEN (GNU bug Tracking System)
To: Christoph Michelbach <michelbach94@HIDDEN>
Subject: bug#31862: Acknowledgement (26.1; [feature request] Improve
 copying over a network connection in dired)
Message-ID: <handler.31862.B.15291734219538.ack <at> debbugs.gnu.org>
References: <1529173406.941.8.camel@HIDDEN>
X-Gnu-PR-Message: ack 31862
X-Gnu-PR-Package: emacs
Reply-To: 31862 <at> debbugs.gnu.org
Date: Sat, 16 Jun 2018 18:24:01 +0000

Thank you for filing a new bug report with debbugs.gnu.org.

This is an automatically generated reply to let you know your message
has been received.

Your message is being forwarded to the package maintainers and other
interested parties for their attention; they will reply in due course.

Your message has been sent to the package maintainer(s):
 bug-gnu-emacs@HIDDEN

If you wish to submit further information on this problem, please
send it to 31862 <at> debbugs.gnu.org.

Please do not send mail to help-debbugs@HIDDEN unless you wish
to report a problem with the Bug-tracking system.

--=20
31862: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D31862
GNU Bug Tracking System
Contact help-debbugs@HIDDEN with problems

Last modified: Mon, 25 Nov 2019 12:00:02 UTC

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997 nCipher Corporation Ltd, 1994-97 Ian Jackson.