RFE: Improve ement's memory footprint #299
Description
OS/platform
GNU/Linux
Emacs version and provenance
GNU Emacs 29.4.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.33, cairo version 1.16.0) of 2024-07-16
I built my own Emacs.
Emacs command
emacs server + client
Emacs frame type
A mix of both (but I only use ement on GUI)
Ement package version and provenance
0.15.1, from ELPA
Actions taken
Like many Emacs users, I leave mine open for several days/weeks/months. Ever since I started using ement, I've been noticing Emacs getting slower and slower over time, to the point where the best "fix" is to restart it.
I haven't tried to tweak any garbage collector settings, but I don't think that's where the problem lies. It seems like all this memory (see below) is actually being used, so there's nothing to be collected.
Observed results
I ran memory-report, which took almost 1 hour to gather all data (!!!). This is what I saw:
Estimated Emacs Memory Usage
3.2 GiB Total Buffer Memory Usage
751 MiB Overall Object Memory Usage
549 MiB Memory Used By Global Variables
83 MiB Reserved (But Unused) Object Memory
11 MiB Memory Used By Symbol Plists
812 KiB Total Image Cache Size
Object Storage
279 MiB Strings
259 MiB Conses
148 MiB Vectors
58 MiB Intervals
7.1 MiB Symbols
219 KiB Buffer-Objects
39 KiB Floats
Largest Buffers
186 MiB *Ement Notifications*
186 MiB *Ement Mentions*
149 MiB *Ement Room: REDACTED
148 MiB *Ement Room: REDACTED
148 MiB *Ement Room: REDACTED
147 MiB *Ement Room: REDACTED
147 MiB *Ement Room: REDACTED
146 MiB *Ement Room: REDACTED
146 MiB *Ement Room: REDACTED
146 MiB *ement-room--format-message*
145 MiB *Ement Room: REDACTED
145 MiB *Ement Room: REDACTED
145 MiB *Ement Room: REDACTED
145 MiB *Ement Room: REDACTED
145 MiB *Ement Room: REDACTED
145 MiB *Ement Room: REDACTED
145 MiB *Ement Room: REDACTED
145 MiB *Ement Room: REDACTED
145 MiB *Ement Room: REDACTED
145 MiB *Ement Room: REDACTED
Largest Variables
354 MiB ement-syncs
145 MiB ement-sessions
9.2 MiB package-archive-contents
7.1 MiB gnus-dup-hashtb
6.9 MiB gnus-dup-list
4 MiB gnus-active-hashtb
1.7 MiB load-history
1.4 MiB org-fold-core--property-symbol-cache
1.4 MiB org-persist--associated-buffer-cache
1 MiB ucs-normalize-hangul-translation-alist
813 KiB nerd-icons/mdicon-alist
805 KiB ement-users
764 KiB easy-menu-converted-items-table
630 KiB info-lookup-cache
620 KiB gnus-newsgroup-data
558 KiB emoji--names
556 KiB face--new-frame-defaults
430 KiB modus-themes-faces
345 KiB uni-confusable-table
327 KiB package--compatibility-table
Expected results
I'd like to be able to keep using Emacs without having to restart it :-).
Backtrace
No response
Etc.
I compile my own Emacs, but I try to stick to upstream's release branch and that's what I've been using on my two main machines. On both, I see the same symptoms.