Re: Emacs 23.0 is much slower starting than Emacs 22.3

[David De La Harpe Golden]

Lennart Borgman wrote:

> It is probably different on w32 then. It looks like `normal-mode'
> takes maybe 1.5 time insert+file-attr+file-modes+file-exist on w32.
> (But I did not use elp, maybe I missed something.)

I have a vague recollection that emacs' reading of certain file 
attributes can be slow on w32 as it's emulating them or something?
There's a variable w32-get-true-file-attributes that may be relevant?

Reminds me: the ext3 fs I was testing on was mounted "relatime"
http://kerneltrap.org/node/14148
(also turns out NTFS apparently has something very much akin to the 
atime "feature", something I didn't know until just now, might want to 
try turning it off [1])

FWIW, elp - I just added the following to the end of my .emacs

(require 'elp)
(setq elp-function-list
        '(find-file
          find-file-noselect)) ; and so forth.
(elp-set-master 'find-file-noselect)
(elp-instrument-list)

Then, starting emacs with
emacs -l fftest.el -f elp-results
I was presented with my profiling results when they were ready.

(or you can hit M-x elp-results)


[1] no. 8 
http://www.windowsdevcenter.com/pub/a/windows/2005/02/08/NTFS_Hacks.html