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bug#3977: 23.1.50; Tramp slows down Emacs
From: |
Torsten Bronger |
Subject: |
bug#3977: 23.1.50; Tramp slows down Emacs |
Date: |
Mon, 03 Aug 2009 18:22:09 +0200 |
User-agent: |
Gnus/5.110011 (No Gnus v0.11) Emacs/23.1.50 (gnu/linux) |
Hallöchen!
Michael Albinus writes:
> Torsten Bronger <bronger@physik.rwth-aachen.de> writes:
>
> [...]
>
>> When using Emacs locally, you don't see this effect. However,
>> here at work, I start Emacs on my home machine through an SSH
>> tunnel, and then Tramp slows down Emacs significantly; not Emacs
>> per se but only the display. For example, I can scroll through a
>> large text file and it needs the same amount of time. But with
>> Tramp, I don't see the text scrolling, just reaching the end.
>
> Honestly, I cannot reproduce the effect. How do you start Emacs
> through the tunnel? I have done it via
>
> ssh -X otherhost /usr/local/src/emacs/src/emacs -Q
This is equivalent to my test.
And then, I say "M-x customize-group RET RET" and have 4 TCP packets
per second (maybe cursor blinking). If I start the above command
again and say "M-x customize-group RET tramp RET", I have 60 packets
per second.
> [...]
>
> [...] But as I said, I cannot see a difference in network activity
> with loaded / not loaded Tramp. Could you, please, analyze these
> additional packages in more detail?
Then somebody must tell me how. ;-) I'm really not an expert in
packet sniffing. Those packages are encrypted, so Wireshark shows
me only garbage.
> Which port are they speaking to, which application is behind? Is
> it really X?
I think -X means that only the X port is forwarded. Besides, the
local machine has nothing else listening. There is no shared
directory, and no SSH server.
Tschö,
Torsten.
--
Torsten Bronger, aquisgrana, europa vetus
Jabber ID: torsten.bronger@jabber.rwth-aachen.de
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