From: Kim Barrett <kab@conundrums.ca>
To: Michael Albinus <michael.albinus@gmx.de>
Cc: help-gnu-emacs@gnu.org
Subject: Re: emacs find-file extremely slow over sshfs+vpn
Date: Mon, 4 Sep 2023 20:18:36 -0400 [thread overview]
Message-ID: <9AB6C447-E192-43DD-8E2C-4DA27067889F@conundrums.ca> (raw)
In-Reply-To: <87sf7u6y0f.fsf@gmx.de>
> On Sep 4, 2023, at 6:20 AM, Michael Albinus <michael.albinus@gmx.de> wrote:
>
> Kim Barrett <kab@conundrums.ca> writes:
>
> Hi Kim,
>
>> I'm trying to use emacs (29.1-1, also 28.2 and 28.1-4) on MacOS to edit files
>> on a remote machine via VPN and sshfs. (Mac-compatible emacs obtained from
>> https://emacsformacosx.com/builds.) Using emacs to read or write such files
>> takes a very long time, like 2-3 minutes. These are not large files. Obviously
>> this very usable.
>>
>> It seems like the VPN is connected to the problem, since I don't see such a
>> delay when reading and writing files accessed via sshfs on a remote machine
>> that doesn't need VPN for access.
>>
>> The network performance over VPN isn't amazing, but by itself it's nowhere
>> near bad enough to account for what I'm seeing with emacs. And I don't see
>> anything like that slowdown with other applications (including Aquamacs, a mac
>> port of emacs 25).
>>
>> Searching the web finds various similar sounding complaints of various
>> vintages, but I'm not finding anything that matches what I'm seeing and has a
>> solution.
>>
>> Any suggestions? I'd really like to switch to a recent version of emacs (I've
>> been using Aquamacs, but it's been stuck on emacs 25 for a long time). But
>> this problem makes that impossible for one of my main uses.
>
> In my experience, it matters to set proper cache values for sshfs. Read
> the man page.
Playing with caching options seems to me unlikely to fix my problem, since I
only see it with emacs, not with anything else (including Aquamacs, a MacOS
port of emacs 25). Emacs seems to be doing "something" when used over my
sshfs+vpn configuration, but I've no idea what or how to find out.
I spent some time fiddling with cache options anyway, and didn't detect any
improvements.
> Alternatively, you could try Tramp for accessing your remote files via
> its "ssh" method. Read the Tramp manual.
>
> Best regards, Michael.
prev parent reply other threads:[~2023-09-05 0:18 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-03 20:54 emacs find-file extremely slow over sshfs+vpn Kim Barrett
2023-09-04 10:20 ` Michael Albinus
2023-09-05 0:18 ` Kim Barrett [this message]
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