Re: Cream unusably slow for some Vim scripts (e.g. TOhtml)

[BG - B. A. <BAr...@dy...>]

On Wed, 2005-12-28 at 15:09 -0400, BG - Ben Armstrong wrote:
> If we could defeat most or all Cream autocmds during this expensive
> operation, only re-enabling them (and triggering them) when we are all
> done, the performance could be greatly improved.

Taking a cue from our earlier performance problem report and your
suggestions about what to try, I devised a manual workaround:

^O:set eventignore=all
^O:TOhtml
^O:set eventignore=

Then, to retrigger the BufEnter autocmds (e.g. filetype detection/syntax
highlighting,) I had to leave the newly created html output buffer and
re-enter it.

This time, the TOhtml conversion only took 25 seconds.  Re-measuring the
same test in gvim, but without the set eventignore=all, it took 27
seconds, so I must have made an error (or my test environment wasn't
"clean") the first time.

Neat trick.  But it needs packaging.  I'd hate to have to write a Cream
wrapper per expensive Vim function, but that's what it's looking like to
me, with my limited Vim skills.

By the way, I tried disabling autocmds one group at a time: autocmd!
BufEnter *, autocmd! BufWinEnter *, etc. to narrow it down to a specific
group that was causing the most trouble, but I never did find the
culprit.  (I probably wasn't patient enough and gave up too early --
there are an awful lot of autocmds!)

Ben