Hi Yakov,
On 4/28/06, Yakov Lerner <[EMAIL PROTECTED]> wrote:
I identified which functions are slow and which are fast out of functions
called (load_dummy_buffer() + wipe_dummy_buffer()) pair.
As I wrote earlier this pair of functions is what slows down vimgrep,
not the search. The loop of 1000x (load_dummy_buffer() + wipe_dummy_buffer())
takes 30 seconds per 1000 pairs on my machine (800 MHZ). These tests
are on empty files, so data size is not a problem. No regexp searching is
performed.
Results:
check_need_swap() - 50% major contributor to slowdown
Maybe the 'noswapfile' option should be set for buffers opened during
the ":vimgrep" operation?
- Yegappan
ml_open() - 30% 2nd contributor
setfname() - 19% surprise, surprise
The rest of functions are blazingly fast, take <1% of time.
Fast functions (negligible overhead) include:
- wipe_dummy_buffer()
- buf_copy_options()
- buflist_new()
- aucmd_prepbuf()
- aucmd_restbuf()
I don't have real results for readfile() because I
tested on empty files. But on empty file readfile() works fast.
Yakov
