joshukraine

What I’ve learned about slow performance in Vim

January 27, 2018

I started this PR because Vim had gotten very slow and laggy. The problem seemed particularly painful when editing Ruby files. For example, when trying to move down by holding the “j” key, the downward motion would continue for a second or two after I’d released the key, causing me to far overshoot my target.

There were many other performance issues beyond scrolling. Sometimes even just simply typing in insert mode was noticeably slow. I knew things were getting serious when I found myself watching tutorial videos for Microsoft Visual Studio Code.

Happily, I’ve found a path back to a speedy and responsive Vim. Here’s what I’ve learned.

joshukraine

javascript: Promise.all([import('https://unpkg.com/turndown@6.0.0?module'), import('https://unpkg.com/@tehshrike/readability@0.2.0'), ]).then(async ([{
    default: Turndown
}, {
    default: Readability
}]) => {

  /* Optional vault name */
  const vault = "obsidian-main";

  /* Optional folder name such as "Clippings/" */

joshukraine

[oh-my-zsh] Insecure completion-dependent directories detected:
drwxrwxr-x   7 joshukraine  admin  224 May  2 07:35 /usr/local/share/zsh
drwxrwxr-x  12 joshukraine  admin  384 May  2 07:33 /usr/local/share/zsh/site-functions

[oh-my-zsh] For safety, we will not load completions from these directories until
[oh-my-zsh] you fix their permissions and ownership and restart zsh.
[oh-my-zsh] See the above list for directories with group or other writability.

[oh-my-zsh] To fix your permissions you can do so by disabling
[oh-my-zsh] the write permission of "group" and "others" and making sure that the

joshukraine

  TOTAL      COUNT  MATCH   SLOWEST     AVERAGE   NAME               PATTERN
  0.057130   9929   4703    0.000084    0.000006  rubySymbol         [[:space:],{(]\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*[!?]\=:[[:space:],]\@=
  0.052588   7070   1844    0.000155    0.000007  rubySymbol         []})\"':]\@1<!\<\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*[!?]\=:[[:space:],]\@=
  0.050374   5257   31      0.000122    0.000010  rubyKeywordAsMethod \(defined?\|exit!\)\@!\<[_[:lower:]][_[:alnum:]]*[?!]
  0.042170   5228   0       0.000079    0.000008  rubyString         \%(^.*\%(\%(class\|::\)\s*\|\%([]}).]\)\s\|\w\)\@<!<<[-~]`\z([^`]*\)`.*\)\@<=\n
  0.040648   5228   0       0.000088    0.000008  rubyString         \%(^.*\%(\%(class\|::\)\s*\|\%([]}).]\)\s\|\w\)\@<!<<[-~]\z(\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*\)\>.*$\)\@<=\n
  0.039729   5228   0       0.000071    0.000008  rubyString         \%(^.*\%(\%(class\|::\)\s*\|\%([]}).]\)\s\|\w\)\@<!<<[-~]'\z([^']*\)'.*\)\@<=\n
  0.039659   5228   0       0.000072 

joshukraine

  TOTAL      COUNT  MATCH   SLOWEST     AVERAGE   NAME               PATTERN
  0.494780   7555   0       0.000914    0.000065  rubyString         \%(^.*\%(\%(class\|::\)\s*\|\%([]}).]\)\s\|\w\)\@<!<<[-~]`\z([^`]*\)`.*\)\@<=\n
  0.489842   7555   0       0.000980    0.000065  rubyString         \%(^.*\%(\%(class\|::\)\s*\|\%([]}).]\)\s\|\w\)\@<!<<[-~]\z(\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*\)\>.*$\)\@<=\n
  0.481765   7555   0       0.000933    0.000064  rubyString         \%(^.*\%(\%(class\|::\)\s*\|\%([]}).]\)\s\|\w\)\@<!<<\z(\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*\).*$\)\@<=\n
  0.478531   7555   0       0.000908    0.000063  rubyString         \%(^.*\%(\%(class\|::\)\s*\|\%([]}).]\)\s\|\w\)\@<!<<[-~]'\z([^']*\)'.*\)\@<=\n
  0.476628   7555   0       0.000893    0.000063  rubyString         \%(^.*\%(\%(class\|::\)\s*\|\%([]}).]\)\s\|\w\)\@<!<<"\z([^"]*\)".*\)\@<=\n
  0.475943   7555   0       0.000882    0.000063  rubyString         \%(^.*\%(\%(class\|::\)\s*\|\%([]}).]\)\s\|\w\)\@<!<<`\z([^`]*\)`

joshukraine

That time I had to compile Vim from source...

January 2, 2018

Recently, something broke in Homebrew's version of Vim. Several things seemed weird, but what first caught my eye was that misspelled words were no longer highlighted in Markdown files. This is a feature that I have previously configured and I use it often when writing blog posts and such.

Initially, I assumed I had a problem with my Vim settings. After much troubleshooting and no joy, I finally uninstalled Homebrew's version of Vim which caused my system to fall back to the default version of Vim that ships with macOS. Suddenly the highlighting worked fine.

After doing some further research, I decided I would try to compile and install Vim myself. After some googling and patching together a few different articles, this is what worked for me.

joshukraine

rails: bin/rails server
postgres: postgres -D /usr/local/var/postgres
redis: redis-server /usr/local/etc/redis.conf
livereload: bin/guard -P livereload

joshukraine

This is a test!

Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

joshukraine

# lib/capistrano/tasks/remote_rake_task.rake
#
# This task allows you to run rake tasks on the remote server using Capistrano.
# The rake task itself is passed in as an argument.
# Example:
# bin/cap staging "task:invoke[app:setup]"
#
# References:
# http://www.jetthoughts.com/blog/magic/2013/09/26/capistrano-3-passing-parameters-to-your-task.html
# http://stackoverflow.com/questions/23828950/how-to-run-custom-rake-task-via-capistrano-3

joshukraine

// ~/.config/powerline/themes/vim/default.json

{
	"segment_data": {
		"branch": {
			"before": ""
		},
		"modified_indicator": {
			"args": { "text": "+" }
		},