On Wed, Apr 1, 2020 at 7:15 PM Pratyush Yadav <m...@yadavpratyush.com> wrote: > > Hi, > > I am using the built-in ccomplete#Complete omnifunc for tags-based > completion. It works pretty well with a small or medium sized project. > But on larger projects like Linux or U-Boot, the tags file is pretty big > (~650k lines/70 for U-Boot and ~4.8 mil lines/630MB for Linux). > > On these projects, especially Linux, if I use ccomplete, completion > takes a huge amount of time. And since the completion is synchronous, > vim just freezes up for that time and I have to wait for the completion > results to show up. On Linux the wait times can go more than a minute on > my modest quad core 4th gen i7 and a SATA SSD. > > So, I intend to set aside some time and try to speed up the completion > and make it asynchronous. I haven't read or written much vimscript so I > don't expect it to be easy or quick. So before I do that, I'd like to > know if anyone here attempted this before. > > If someone did succeed, could you please point me to the optimized > version? If someone tried but failed, could you please let me know where > you had trouble? Is it that the ctags format just not suitable for large > projects? Is there some limitation with vim that makes it impossible? Is > it something else entirely? > > -- > Regards, > Pratyush Yadav
The Vim tags file is pretty large, but how is your tags file built? In particular, is it case-fold-sorted? If your Vim is built with +tag_binary (nowadays it always is, if yours isn't you need a newer model), and 'tagbsearch' is on (which is the default), then finding a tag in an unsorted tags file uses linear time, in a case-folded sorted tags file it uses logarithmic time, which is much faster, especially for large tags files. Best regards, Tony. -- -- 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 vim_use+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/vim_use/CAJkCKXutxihhmz38GMK7xiyYcAWtY1ogXfwPAsWaarGczcnp9Q%40mail.gmail.com.
