VIM: dynamic runtimepath per module.vim and slow startup

I'm using VIM 7.1 on Debian. I have 9 plugins that I load via pathogen.vim. It takes around 8 sec's to load which is quite 开发者_C百科slow since this is in non-GUI/xterm mode. I ran vim -V and it shows that each module is being searched for in multiple directories.

Initially, ftoff.vim, debian.vim and other "system" related .vim files are searched for in ~/.vim/ and then in /usr/share/vim/vim71/ - I fixed this by moving my .vimrc to .vim/vimrc and: export VIM=/root/.vim, within .vimrc i did a set runtimepath=/usr/share/vim/vim71

But now, when the modules load, they alter this runtimepath and when pathogen loads it's even worse. Is there a way to specify a hash of module-name to dirPath so that this error prone lookup is avoided? Or a way to manually specify runtimepath on a per module basis within vimrc?

Here is an example of my runtimepath after pathogen loads my modules. Obviously, any further loading of a module invovles searching all those pathnames before locating the right path.

runtimepath=~/.vim,~/.vim/bundle/Align294,~/.vim/bundle/minibufexpl.vim_-_Elegant_buffer_explorer,~/.vim/bu ndle/The_NERD_Commenter,~/.vim/bundle/The_NERD_tree,~/.vim/bundle/pathogen,~/.vim/bundle/vim-addon-mw-utils, /.vim/bundle/tlib,~/.vim/bundle/snipMate,~/.vim/bundle/SuperTab,~/.vim/bundle/surround,~/.vim/bundle/taglist ~/.vim/bundle/Align294,~/.vim/bundle/minibufexpl.vim_-_Elegant_buffer_explorer,~/.vim/bundle/pathogen,~/.vim bundle/snipMate,~/.vim/bundle/SuperTab,~/.vim/bundle/surround,~/.vim/bundle/taglist,~/.vim/bundle/The_NERD_C mmenter,~/.vim/bundle/The_NERD_tree,~/.vim/bundle/tlib,~/.vim/bundle/vim-addon-manager,~/.vim/bundle/vim-add n-manager-known-repositories,~/.vim/bundle/vim-addon-mw-utils,/var/lib/vim/addons,/usr/share/vim/vimfiles,/u r/share/vim/vim71,/usr/share/vim/vimfiles/after,/var/lib/vim/addons/after,~/.vim/bundle/snipMate/after,~/.vi /after,~/.vim/bundle/snipMate/after

I use vim-addon-manager and have 33 paths in rtp, but it takes around 0.7-0.8 seconds to start and immideately close vim (with vim -c 'qa!'), so the problem is either one of the plugins or your system. To check how long it takes to load each plugin, try the following script:

vim --cmd 'profile start profile.log' \
    --cmd 'profile func *' \
    --cmd 'profile file *' \
    -c 'profdel func *' \
    -c 'profdel file *' \
    -c 'qa!'

You will get all timings in the profile.log. Table with function timings will be present at the end of the file, to get per-script timings, use the following script:

" Open profile.log file in vim first
let timings=[]
g/^SCRIPT/call add(timings, [getline('.')[len('SCRIPT  '):], matchstr(getline(line('.')+1), '^Sourced \zs\d\+')]+map(getline(line('.')+2, line('.')+3), 'matchstr(v:val, ''\d\+\.\d\+$'')'))
enew
call setline('.', ['count total (s)   self (s)  script']+map(copy(timings), 'printf("%5u %9s   %8s  %s", v:val[1], v:val[2], v:val[3], v:val[0])'))

This will open a new file containing just the same table as at the end of profile.log, but 1) for scripts, not for functions, 2) unsorted.

If problem is your system, you may try the following:

1. When computer starts create a ram disk and mount it to ~/.vim, then copy all plugins there.
2. Try merging plugins into a single file, see :h scriptmanager2#MergePluginFiles() (vim-addon-manager must be activated)
3. Upgrade your computer

4. Try creating a hardlinks to all plugins in ~/.vim:

   cd ~/.vim/bundle;for d in *;do cd "$d";for f in **/*.vim;do t="$HOME/.vim/$(dirname "$f")";test -d "$t"||mkdir -p "$t";ln "$f" "$t";done;cd ..;done
   

it might not be related, but for me the variable DISPLAY makes a big difference in the time it takes to start vim (even when I have vim compiled without gui). Try with

DISPLAY= vim

and

DISPLAY=:0 vim

and see if you notice a difference.

http://pastebin.com/R6E4czN7

I've pasted the output of vim -V to pastebin (should be valid for 1 month). It's self explanatory. There are a gazillion searches(414 search lines - most of them are useless). I need to reduce the number of incorrect searches.

1297651453.71068: Searching for "/root/.vim/bundle/pathogen/autoload/scriptmanager.vim"[J 1297651453.71456: Searching for "/root/.vim/bundle/snipMate/autoload/scriptmanager.vim"[J 1297651453.71846: Searching for "/root/.vim/bundle/SuperTab/autoload/scriptmanager.vim"[J 1297651453.78737: Searching for "/root/.vim/bundle/surround/autoload/scriptmanager.vim"[J 1297651453.79179: Searching for "/root/.vim/bundle/taglist/autoload/scriptmanager.vim"[J 1297651453.79684: Searching for "/root/.vim/bundle/The_NERD_Commenter/autoload/scriptmanager.vim"[J 1297651453.80756: Searching for "/root/.vim/bundle/The_NERD_tree/autoload/scriptmanager.vim"[J 1297651453.83: Searching for "/root/.vim/bundle/tlib/autoload/scriptmanager.vim"[J 1297651453.86193: Searching for "/root/.vim/bundle/vim-addon-manager/autoload/scriptmanager.vim"[J 1297651453.8662: line 3: sourcing "/root/.vim/bundle/vim-addon-manager/autoload/scriptmanager.vim"[J 1297651453.88259: finished sourcing /root/.vim/bundle/vim-addon-manager/autoload/scriptmanager.vim[J