From: David Abrahams <dave@boostpro.com>
To: Michael Albinus <michael.albinus@gmx.de>
Cc: 2912@emacsbugs.donarmstrong.com
Subject: bug#2912: 23.0.92; Ediff over TRAMP too slow
Date: Tue, 7 Apr 2009 09:17:22 -0400 [thread overview]
Message-ID: <18584843-972F-4F9C-84FF-A9E621BD39CF@boostpro.com> (raw)
In-Reply-To: <nqd4bo9abz.fsf@alcatel-lucent.de>
On Apr 7, 2009, at 3:44 AM, Michael Albinus wrote:
> David Abrahams <dave@boostpro.com> writes:
>
>> Ediff two remote files using /ssh:... protocol
>>
>> It seems to go over the network for everything. At first I thought
>> it
>> was the auto-refining, but I turned that off and it didn't seem to
>> make
>> any difference in speed.
>
> In case of remote files, ediff compares local copies, indeed.
If that's all it was doing, I wouldn't be complaining. Each time I
move to the next diff, it appears to be going over the network.
> I'm not so
> familiar with ediff, therefore I don't know, whether this can be
> changed
> easily, running the diff command on the remote host. However, this
> introduces more complexity into ediff: there might be protocols
> which do
> not support execution of remote commands (like ftp or smb).
> Furthermore,
> ediff would need to check, whether the files to be compared reside on
> the same remote host.
I don't think that would be a big win. There is, however, a lot to be
gained somewhere *during* the ediff session.
> I don't believe that this shall be changed before the release of Emacs
> 23.1. After the release, it might be a new feature somebody (with more
> skills than I have on ediff) might implement.
>
> For larger files, I recommend to use the scp method instead of ssh.
Really! I thought they were roughly the same. Thanks for the hint.
--
David Abrahams
BoostPro Computing
http://boostpro.com
next prev parent reply other threads:[~2009-04-07 13:17 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <mailman.4745.1239066236.31690.bug-gnu-emacs@gnu.org>
2009-04-07 7:44 ` bug#2912: 23.0.92; Ediff over TRAMP too slow Michael Albinus
2009-04-07 13:17 ` David Abrahams [this message]
2009-04-07 13:29 ` Michael Albinus
2009-04-07 14:58 ` David Abrahams
2009-04-07 15:26 ` Stefan Monnier
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