Bram Moolenaar <[email protected]> wrote: > > > Gianmaria Bajo wrote: > > > Even getting/setting lines in one go (as in the lua version) doesn't=20 > > improve it for me: > > > > vim9script > > > > def g:VimTest(): void > > var totallen = 0 > > var start = reltime() > > new > > setline(1, range(100000)) > > var lines = getline(1, 100000) > > for i in range(100000) > > lines[i] = ' ' .. lines[i] > > totallen += len(lines[i]) > > endfor > > setline(1, lines) > > echom totallen > > echom reltimestr(reltime(start)) > > bwipe! > > enddef > > > > Result: > > > > :call VimTest() > > 888890 > > 0.330822 > > You are taking it in the wrong direction. The benchmark is for a plugin > that would go over the text and make changes here and there, e.g. adjust > the indent. That would only change some lines, but to get it do more > work for a more reliable measurement the benchmark changes many lines. > Changing this to take all lines at once, change them, then set all lines > at once, is changing what it is trying to measure. > > It is no surprise Lua would be faster with list manipulations. Thus if > you shift work from interacting with the buffer lines to string > manipulations it can be expected that using Lua is faster. In practice > plugins do have to manipulate buffer lines, so I rather do more of that > to have a representative benchmark. > > Note that even when Vim script is a bit slower than Lua I'm still > satisfied. I expect Lua was already tweaked for performance, Vim9 is > still young, there probably is a performance gain if we put some effort > into it. If Vim script was ten times slower I would wonder if we are > doing something wrong.
The 2 benchmarks in README_VIM9.md (sum and indent) have loops with many iterations. So they only benchmark execution time of compiled code as opposed to measuring the time to compile the script. I suppose that often, some functions are executed only a few times (sometimes only once) and so speed of compilation could also matter for large scripts. It's harder to compare compilation time between Vim9 and LuaJIT though. Dominique -- -- You received this message from the "vim_use" maillist. Do not top-post! Type your reply below the text you are replying to. For more information, visit http://www.vim.org/maillist.php --- You received this message because you are subscribed to the Google Groups "vim_use" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/vim_use/CAON-T_hObEODB3fs52HeDwR7PzEi7RL98BBScKTUOWRbeeM0Ng%40mail.gmail.com.
