bug#31099: 27.0.50; ultra long tramp entries in recentf file

bug#31099: 27.0.50; ultra long tramp entries in recentf file

[Thomas Hisch]

I have a recentf file containing only 171 lines but it's 56MB big! Due to
its large size loading and closing emacs is slowed down.

The large size is due to a few tramp entries like the following (each 
entry consumes approx 10MB):

   #("/ssh:user@host:/file1" 1 4 (match-part #("/ssh:user@host:/file2" 1 4
    ....

I guess that this is either a bug in recentf or in tramp.



In GNU Emacs 27.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.18.9)
  of 2018-04-08 built on thomas-XPS-13-9360
Repository revision: 8df23a82042fa7dbaaa4377bc376d705595b073f
Windowing system distributor 'The X.Org Foundation', version 11.0.11804000
System Description: Ubuntu 16.04.4 LTS

Recent messages:
Invalid face attribute :bold t [64 times]
Quit
Updating buffer list...
Formats have changed, recompiling...done
Updating buffer list...done
Commands: m, u, t, RET, g, k, S, D, Q; q to quit; h for help
Saving file /home/thomas/*message*-20180408-204229...
Wrote /home/thomas/*message*-20180408-204229
Quit
Mark set

Configured using:
  'configure --prefix=/opt/emacs --with-x-toolkit=gtk3 --with-xpm
  --without-jpeg --without-gif --without-tiff'

Configured features:
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TOOLKIT_SCROLL_BARS GTK3 X11 THREADS

Important settings:
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Major mode: Fundamental

Minor modes in effect:
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Load-path shadows:
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bug#31099: 27.0.50; ultra long tramp entries in recentf file

[Michael Albinus]

Thomas Hisch <thomas.hisch@ims.co.at> writes:

Hi Thomas,

> I have a recentf file containing only 171 lines but it's 56MB big! Due to
> its large size loading and closing emacs is slowed down.
>
> The large size is due to a few tramp entries like the following (each
> entry consumes approx 10MB):
>
>   #("/ssh:user@host:/file1" 1 4 (match-part #("/ssh:user@host:/file2" 1 4
>    ....
>
> I guess that this is either a bug in recentf or in tramp.

I cannot reproduce it locally. Usually, I don't use recentf. For testing
I've enabled it via `M-x recentf-mode', closed Emacs, and started a new
Emacs session. Visiting the recentf file, it doesn't look suspicious.

Do you reproduce the problem with a similar setting, starting with
"emacs -Q"?

Could you send me your recentf file? Maybe I'll see something Tramp
related there.

Best regards, Michael.

bug#31099: 27.0.50; ultra long tramp entries in recentf file

[Thomas Hisch]

Hi Michael,

no I can't reproduce it neither using emacs -Q nor with my current emacs 
setup. I regularly update and recompile emacs and my installed elisp 
packages. Approx. 2 weeks ago I noticed that closing emacs takes longer 
than 10sec, but I didn't investigate this further until yesterday.

My recentf config is quite simple:

(setq recentf-save-file (concat thi::cache-file-dir "/recentf"))

(require 'recentf)
(recentf-mode 1)
(setq recentf-keep '(file-remote-p file-readable-p))
(setq recentf-max-menu-items 60)
(setq recentf-max-saved-items 500)
(setq recentf-exclude '("COMMIT_EDITMSG"
                         ".newsrc-dribble"))

I'll keep an eye on this issue.

On 2018-04-09 16:38, Michael Albinus wrote:
> Thomas Hisch <thomas.hisch@ims.co.at> writes:
> 
> Hi Thomas,
> 
>> I have a recentf file containing only 171 lines but it's 56MB big! Due to
>> its large size loading and closing emacs is slowed down.
>>
>> The large size is due to a few tramp entries like the following (each
>> entry consumes approx 10MB):
>>
>>    #("/ssh:user@host:/file1" 1 4 (match-part #("/ssh:user@host:/file2" 1 4
>>     ....
>>
>> I guess that this is either a bug in recentf or in tramp.
> 
> I cannot reproduce it locally. Usually, I don't use recentf. For testing
> I've enabled it via `M-x recentf-mode', closed Emacs, and started a new
> Emacs session. Visiting the recentf file, it doesn't look suspicious.
> 
> Do you reproduce the problem with a similar setting, starting with
> "emacs -Q"?
> 
> Could you send me your recentf file? Maybe I'll see something Tramp
> related there.
> 
> Best regards, Michael.
> 
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E-Mail: imsoffice@ims.co.at; DVR-Nr: 0374369; www.ims.co.at

bug#31099: 27.0.50; ultra long tramp entries in recentf file

[Michael Albinus]

Thomas Hisch <thomas.hisch@ims.co.at> writes:

> Hi Michael,

Hi Thomas,

> I'll keep an eye on this issue.

So let's keep this bug report open for a couple of weeks. If the
problems happens again, pls send me your recentf file.

Best regards, Michael.

bug#31099: 27.0.50; ultra long tramp entries in recentf file

[Michael Albinus]

Michael Albinus <michael.albinus@gmx.de> writes:

Hi Thomas,
>
>> I'll keep an eye on this issue.
>
> So let's keep this bug report open for a couple of weeks. If the
> problems happens again, pls send me your recentf file.

No further report; I'm closing the bug.

Best regards, Michael.