From: Michael Albinus via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
To: Dmitry Gutov <dmitry@gutov.dev>
Cc: 70901@debbugs.gnu.org
Subject: bug#70901: 30.0.50; Tramp doesn't use ControlMaster even with (setq tramp-use-connection-share nil)
Date: Wed, 15 May 2024 10:17:55 +0200 [thread overview]
Message-ID: <87y18bebf0.fsf@gmx.de> (raw)
In-Reply-To: <19d0563d-2778-4e27-92b0-03a86c8e1473@gutov.dev> (Dmitry Gutov's message of "Tue, 14 May 2024 22:02:35 +0300")
Dmitry Gutov <dmitry@gutov.dev> writes:
> Hi Michael,
Hi Dmitry,
>> The Tramp ssh call looks like it should. Tramp doesn't care about
>> ControlMaster with your settings:
>>
>>> 14:41:04.227455 tramp-maybe-open-connection (3) # Sending command ‘exec ssh -l dgutov -e none fencepost.gnu.org || exit’
>>> 14:41:04.227485 tramp-send-command (6) # exec ssh -l dgutov -e none fencepost.gnu.org || exit
>>> 14:41:06.037182 tramp-process-actions (6) #
>>> Last login: Mon May 13 07:39:46 2024 from 82.102.62.129
>>> dgutov@fencepost:~$
>
> Shouldn't it then take advantage of ControlMaster, which has been
> configured for this host?
It should. You could check which settings will be used by calling
'ssh -G fencepost.gnu.org'.
> ssh logs in to the remote server very quickly from the terminal with
> my ControlMaster configuration.
>
> But I don't see any speed improvement in Tramp operations from it. For
> example, I evaluate just 'ls' using M-& (async-shell-command), and the
> time it takes to complete doesn't seem to be affected by the contents
> of my ~/.ssh/config.
Sure. The connection is fast. But then, Tramp makes an initial
hand-shake, which needs some roundtrips. Set
(add-to-list 'tramp-connection-properties
(list (regexp-quote "/ssh:fencepost.gnu.org:")
"direct-async-process" t))
prior connecting the host the very first time in Tramp. This should
improve the speed. Since it doesn't ask for passwords interactively, you
might configure your password via auth-source.
See the discussion in (info "(tramp)Improving performance of asynchronous
remote processes")
Best regards, Michael.
next prev parent reply other threads:[~2024-05-15 8:17 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-13 2:00 bug#70901: 30.0.50; Tramp doesn't use ControlMaster even with (setq tramp-use-connection-share nil) Dmitry Gutov
2024-05-13 6:07 ` Michael Albinus via Bug reports for GNU Emacs, the Swiss army knife of text editors
[not found] ` <44185444-8a6a-4924-88f9-853f65a1c61a@gutov.dev>
2024-05-14 9:01 ` Michael Albinus via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-05-14 19:02 ` Dmitry Gutov
2024-05-15 8:17 ` Michael Albinus via Bug reports for GNU Emacs, the Swiss army knife of text editors [this message]
2024-05-15 14:45 ` Dmitry Gutov
2024-05-15 18:15 ` Michael Albinus via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-05-15 19:55 ` Dmitry Gutov
2024-05-16 9:42 ` Michael Albinus via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-05-16 19:50 ` Dmitry Gutov
2024-05-17 14:57 ` Michael Albinus via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-05-18 2:29 ` Dmitry Gutov
2024-05-18 11:19 ` Michael Albinus via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-05-18 14:11 ` Dmitry Gutov
2024-05-18 17:00 ` Michael Albinus via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-05-18 17:02 ` Dmitry Gutov
2024-05-18 17:47 ` Michael Albinus via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-05-19 0:07 ` Dmitry Gutov
2024-05-23 16:25 ` Michael Albinus via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-05-24 19:12 ` Dmitry Gutov
2024-05-25 9:42 ` Michael Albinus via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-05-19 0:49 ` Dmitry Gutov
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