Vim configuration slow in Terminal & iTerm2 but not in MacVim
- by Jey Balachandran
Ideally, I want to use Vim from Terminal or iTerm2. However, it becomes unbearably slow so I had to resort to using MacVim. There is nothing wrong with MacVim, however my workflow would be much smoother if I used only Terminal/iTerm2.
When its slow
Loading files, in particular Rails files takes about 1 - 1.5s. Removing rails.vim decreases this time to 0.5 - 1s. In MacVim this is instantaneous.
Scrolling through the rows and columns via h, j, k, l. It progressively gets slower the longer I hold down the keys. Eventually, it starts jumping rows. I have my Key Repeat set to Fast and Delay Until Repeat set to Short.
After 10 - 15 minutes of usage, using plugins such as ctrlp or Command-T gets very laggy. I'd type a letter, wait 2 - 3s, then type the next.
My Setup
11" MacBook Air running Mac OS X Version 10.7.3 (1.6 Ghz Intel Core 2 Duo, 4 GB DDR3)
My dotfiles.
> vim --version
VIM - Vi IMproved 7.3 (2010 Aug 15, compiled Nov 16 2011 16:44:23)
MacOS X (unix) version
Included patches: 1-333
Huge version without GUI. Features included (+) or not (-):
+arabic +autocmd -balloon_eval -browse ++builtin_terms +byte_offset +cindent
-clientserver +clipboard +cmdline_compl +cmdline_hist +cmdline_info +comments
+conceal +cryptv -cscope +cursorbind +cursorshape +dialog_con +diff +digraphs
-dnd -ebcdic +emacs_tags +eval +ex_extra +extra_search +farsi +file_in_path
+find_in_path +float +folding -footer +fork() -gettext -hangul_input +iconv
+insert_expand +jumplist +keymap +langmap +libcall +linebreak +lispindent
+listcmds +localmap -lua +menu +mksession +modify_fname +mouse -mouseshape
+mouse_dec -mouse_gpm -mouse_jsbterm +mouse_netterm -mouse_sysmouse
+mouse_xterm +multi_byte +multi_lang -mzscheme +netbeans_intg +path_extra -perl
+persistent_undo +postscript +printer +profile +python -python3 +quickfix
+reltime +rightleft +ruby +scrollbind +signs +smartindent -sniff +startuptime
+statusline -sun_workshop +syntax +tag_binary +tag_old_static -tag_any_white
-tcl +terminfo +termresponse +textobjects +title -toolbar +user_commands
+vertsplit +virtualedit +visual +visualextra +viminfo +vreplace +wildignore
+wildmenu +windows +writebackup -X11 -xfontset -xim -xsmp -xterm_clipboard
-xterm_save
system vimrc file: "$VIM/vimrc"
user vimrc file: "$HOME/.vimrc"
user exrc file: "$HOME/.exrc"
fall-back for $VIM: "/usr/local/Cellar/vim/7.3.333/share/vim"
Compilation: /usr/bin/llvm-gcc -c -I. -Iproto -DHAVE_CONFIG_H -DMACOS_X_UNIX -no-cpp-precomp -O3 -march=core2 -msse4.1 -w -pipe -D_FORTIFY_SOURCE=1
Linking: /usr/bin/llvm-gcc -L. -L/usr/local/lib -o vim -lm -lncurses -liconv -framework Cocoa -framework Python -lruby
I've tried running without any plugins or syntax highlighting. It opens files a lot faster but still not as fast as MacVim. But the other two problems still exist.
Why is my vim configuration slow?
How can I improve the speed of my vim configuration within Terminal or iTerm2?
