Leaderf line is slow to open (3-5 seconds)

[eyalk11]

• vim or neovim?

  • vim
  • [x ] neovim

• Output of vim --version or nvim --version:

• Output of :echo has("python"):

• Output of :echo has("python3"):

• Output of :py print(sys.version):

• Output of :py3 print(sys.version):

NVIM v0.10.0-dev-3122+ga0a189a8e
Build type: RelWithDebInfo
LuaJIT 2.1.1713484068
Run ":verbose version" for more info
0
1
3.9.6 (tags/v3.9.6:db3ff76, Jun 28 2021, 15:26:21) [MSC v.1929 64 bit (AMD64)]
3.9.6 (tags/v3.9.6:db3ff76, Jun 28 2021, 15:26:21) [MSC v.1929 64 bit (AMD64)]

• Operating system:
  • Linux
  • Mac OS X
  • [ X] Windows
  • Etc.
• Configurations related to LeaderF in vimrc:

command! LeaderfEnablePreview let g:Lf_PreviewResult = {
			\ 'File': 1,
			\ 'Buffer': 1,
			\ 'Mru': 0,
			\ 'Tag': 0,
			\ 'BufTag': 1,
			\ 'Function': 1,
			\ 'Line': 1,
			\ 'Colorscheme': 0,
			\ 'Rg' : 1
			\}

command LeaderfDisablePreview let g:Lf_PreviewResult = {
\ 'File': 0,
\ 'Buffer': 0,
\ 'Mru': 0,
\ 'Tag': 0,
\ 'BufTag': 0,
\ 'Function': 0,
\ 'Line': 0,
\ 'Colorscheme': 0,
\ 'Rg' : 0
\}

let g:Lf_DevIconsFont = "DroidSansMono Nerd Font Mono"

set ambiwidth=double
let g:Lf_PreviewResult = {
			\ 'File': 0,
			\ 'Buffer': 1,
			\ 'Mru': 0,
			\ 'Tag': 0,
			\ 'BufTag': 1,
			\ 'Function': 1,
			\ 'Line': 1,
			\ 'Colorscheme': 0,
			\ 'Rg' : 1
			\}
let g:Lf_PopupPreviewPosition='top'
"When you go to normal mode , doing I inserts the line
"call win_execute(%d, "exec 'norm! %yy'")""" % (self._preview_winid, line_nr))
			"\'Line':[['I','"zyy:exec g:Lf_py "lineExplManager.quit()"<CR>"zp']],

"			\'Line':[['I','exec g:Lf_py "call win_execute(%d, "exec ''norm! "zyy''")" % (lineExplManager._preview_winid)<CR>:exec g:Lf_py "lineExplManager.quit()"<CR>"zp']]
let g:Lf_NormalMap ={ 
			\ 'Line':[['I','"zyt[:exec g:Lf_py "lineExplManager.quit()"<CR>"zp']],
			\ 'File':[['I','"zyy:exec g:Lf_py "lineExplManager.quit()"<CR>"zp']],
		\ 'History' :[['I','"zyy:exec g:Lf_py "lineExplManager.quit()"<CR>"zp']]
			\} 

let g:Lf_StlSeparator = { 'left': '', 'right': '' }

let g:Lf_StlColorscheme = 'powerline'
"Make c-h , c-l a valid option in leaderf
let g:Lf_CommandMap = {'<C-k>':['<C-h>'], '<C-j>':['<C-l>'], '<Down>': ['<C-j>','<Down>'], '<UP>': ['<C-k>','<UP>']}

let g:Lf_MruMaxFiles=100000
let g:Lf_ShowHidden  = 1
let g:Lf_MaxCount = 0
let g:Lf_PreviewInPopup =0

let g:Lf_PopupHeight =0.5
let g:Lf_PopupWidth =0.9
let g:Lf_WindowPosition = 'popup'

""ideally would be called each time
let g:Lf_PopupPosition=[max([float2nr(&lines * 0.4),10]),1]
let g:Lf_CacheDirectory = "c:\\users\\ekarni\\.vim\\lcache"
let g:Lf_IndexTimeLimit =7
let g:Lf_RgConfig = [ "--max-columns=150"]
let g:Lf_WorkingDirectoryMode = 'c'

Describe your question, feature request, or bug.

Very slow to start and takes around 3 secs until appears.

I did some profiling both in python and in neovim (see attached)

   10   1.566076             provider#python3#Call()
    1   1.561781   0.000023  leaderf#Any#start()
    1   1.561758   1.504095  leaderf#LfPy()


FUNCTION  provider#python3#Call()
    Defined: ~\nvim-lasttempxx\nvim-temp\share\nvim\runtime\autoload\provider\python3.vim:26
Called 12 times
Total time:   1.783535
 Self time:   1.783535

count  total (s)   self (s)
   12              0.000052   if s:err != ''
                                return
   12              0.000009   endif
   12              0.000047   if !exists('s:host')
                                let s:rpcrequest = function('rpcrequest')
                            
                                " Ensure that we can load the Python3 host before bootstrapping
                                try
                                  let s:host = remote#host#Require('legacy-python3-provider')
                                catch
                                  let s:err = v:exception
                                  echohl WarningMsg
                                  echomsg v:exception
                                  echohl None
                                  return
                                endtry
   12              0.000006   endif
   12              0.326054   return call(s:rpcrequest, insert(insert(a:args, 'python_'.a:method), s:host))

---

I did the profiling on slightly different version (on key mapping only) , but checked it on the last one (from today).

e67d7b5 (last commit I have , 17 days ago )

Steps to reproduce

IDK, I tried with leaderf as only plugin and it did OK (didn't happen)_

I tried just disabling all au and it was slow.
I tried disabling popup and it was slow.
Tried closing all other buffers.

nmap <nowait> , <CMD>Leaderf line<CR>

This is my mapping^

For debug

nmap <nowait> , <CMD>call Lff()<CR>
function! Lff()
py3 << EOF
import cProfile
import pstats
profiler = cProfile.Profile()
profiler.enable()
anyHub.start('line')
profiler.disable()
stats = pstats.Stats(profiler).sort_stats('cumulative')
stats.dump_stats('output.pstats')
EOF
endfunction

Actual behaviour

Expected behaviour

[eyalk11]

output.pstats.txt

That is python pstat file. IIRC the wait time is mainly when waiting for vim. RPC

[eyalk11]

Apparently, it is reasonable after I removed some mappings. The nowait had limited effected for some reason. Still takes around 1.5 sec

[Yggdroot]

What about using :Leaderf line directly?

[eyalk11]

It should be probably 1.5 sec as well. Now it seems fine. I just have to open bug sometimes for something to be solved.