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Re: How to profile restoring from .emacs.desktop
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From: |
Steinar Bang |
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Subject: |
Re: How to profile restoring from .emacs.desktop |
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Date: |
Thu, 28 Jan 2021 23:31:46 +0100 |
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User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/26.3 (windows-nt) |
>>>>> Stefan Monnier <monnier@iro.umontreal.ca>:
>> So it's projectile project discovery that spends most of the time.
>> I wonder if that information can be cached...?
> I don't use Projectile and never looked at its code, so I can't answer
> that.
I googled and found this: https://stackoverflow.com/a/50997907
I changed the script I use to restore an emacs tunnelled over an SSH X
forwarding from:
#!/bin/sh
#
# Brukes til å sparke igang eclipse og emacs når jeg tar en ssh til lorenzo
#
export REPOUSER=maven
cd ~/workspaces
emacs --eval "(progn (desktop-read)(desktop-save-mode 1))" >/dev/null 2>&1 &
to
#!/bin/sh
#
# Brukes til å sparke igang eclipse og emacs når jeg tar en ssh til lorenzo
#
export REPOUSER=maven
cd ~/workspaces
emacs --eval "(progn (setq projectile-enable-caching
't)(desktop-read)(desktop-save-mode 1))" >/dev/null 2>&1 &
I then started emacs once and stopped it, and started emacs again with
profiling on.
The caching didn't seem to have much effect. See the opened profiling
below.
C-h v projectile-enable-caching says:
projectile-enable-caching is a variable defined in ‘projectile.el’.
Its value is t
Original value was nil
(ie. the variable was successfully set)
> I don't know either how Projectile compares to Emacs's builtin support
> for projects (tho I expect it's significantly more featureful), but
> you may want to try that builtin support instead of Projectile to see
> if it suffers from a similar problem, and/or if it provides the subset
> of features you happen to use.
Sounds interesting.
I've googled this as well and the one hit I found was emacs 28:
https://www.gnu.org/software/emacs/manual/html_node/emacs/Projects.html
Is this emacs 28 only?
(I'm still on emacs 26 and 27)
Here's the profile from starting up with a projectile cache in place:
- normal-top-level 116753 92%
- command-line 116753 92%
- command-line-1 116749 92%
- eval 116749 92%
- progn 116749 92%
- desktop-read 116745 92%
- load 116609 92%
- load-with-code-conversion 116609 92%
- eval-buffer 116602 92%
- desktop-create-buffer 116501 92%
- projectile-mode 102763 81%
- projectile-discover-projects-in-search-path 96535 76%
- mapcar 96535 76%
- projectile-discover-projects-in-directory 96535 76%
- mapcar 96039 76%
- #<compiled 0xf66071> 96009 76%
- projectile-add-known-project 90801 72%
- projectile-merge-known-projects 86378 68%
- projectile-save-known-projects 46828 37%
- projectile-serialize 44868 35%
- write-region 12417 9%
- select-safe-coding-system 11873 9%
- find-auto-coding 9805 7%
auto-coding-alist-lookup 3012 2%
sgml-html-meta-auto-coding-function 1011
0%
auto-coding-regexp-alist-lookup 540 0%
sgml-xml-auto-coding-function 392 0%
+ mapcar 58 0%
find-coding-systems-region 43 0%
coding-system-get 26 0%
coding-system-type 22 0%
+ #<compiled 0x124135d> 2120 1%
+ get-buffer-create 68 0%
- projectile-difference 17815 14%
- cl-remove-if 17598 14%
- apply 17580 13%
cl-remove 11888 9%
- projectile-unserialize 15191 12%
+ insert-file-contents 5195 4%
+ #<compiled 0x119c0b9> 3287 2%
+ generate-new-buffer 838 0%
delete-dups 3816 3%
+ abbreviate-file-name 1526 1%
delete-dups 1263 1%
+ projectile-ignored-project-p 20 0%
+ projectile-project-p 4475 3%
directory-files 11 0%
+ projectile--cleanup-known-projects 5847 4%
+ projectile-load-known-projects 236 0%
+ projectile-commander-bindings 64 0%
+ advice-add 56 0%
called-interactively-p 1 0%
+ desktop-restore-file-buffer 7767 6%
+ dired-restore-desktop-buffer 3833 3%
+ bury-buffer 1074 0%
+ rename-buffer 529 0%
+ desktop-load-file 338 0%
+ auto-revert-mode 52 0%
+ flycheck-mode 33 0%
editorconfig-mode 8 0%
buffer-list 4 0%
+ nxml-psgml-compatibility-mode 3 0%
+ smerge-mode 3 0%
+ internal-macroexpand-for-load 23 0%
+ do-after-load-evaluation 7 0%
+ desktop-restore-frameset 136 0%
#<compiled 0x1dda91> 4 0%
+ ... 8194 6%
+ timer-event-handler 563 0%
+ command-execute 99 0%
+ redisplay_internal (C function) 34 0%
+ flycheck-handle-signal 8 0%