On 2007-05-22, Robert Maxwell Robinson <[EMAIL PROTECTED]> wrote:
> ":set undolevels=-1" caused my test to run in less than 15 sec, with no
> other options fiddled with. Thanks Tim, now I have a work-around!
>
> Now, does having the undo facility available _necessarily_ mean deleting a
> large chunk of a file takes so long, or can that be added to the list of
> desired performance enhancements?
Not in my experience. In both experiments I reported earlier I
hadn't done anything special with 'undolevels' and checking them now
shows "undolevels=1000".
I repeated the experiment on the Linux system staring vim as
vim -u NONE two_million_lines
":.,$d" took 13 seconds. I did notice that the CPU was railed at
100% during that time, so loading of your CPU by other tasks may
have an effect, as might the actual physical memory available to
vim.
":set undolevels=-1" did reduce the time to 10 seconds.
Regards,
Gary
--
Gary Johnson | Agilent Technologies
[EMAIL PROTECTED] | Mobile Broadband Division
| Spokane, Washington, USA
