Re: Emacs 23.0 is much slower starting than Emacs 22.3

[Alan Mackenzie <acm@muc.de>]

Hi, Eli!

On Wed, Oct 22, 2008 at 11:19:56PM +0200, Eli Zaretskii wrote:
> > Date: Wed, 22 Oct 2008 21:12:02 +0000
> > From: Alan Mackenzie <acm@muc.de>
> > Cc: Stefan Monnier <monnier@iro.umontreal.ca>, emacs-devel@gnu.org

> > > >>>Starting Emacs 22.3 takes 23 seconds.
> > > >>>Starting Emacs 23.0 takes 38 seconds.

> Is this with cold or warm cache?  Is there a difference?

A warm start each time.

> > > FWIW, I'd find your emacs22 time pretty unacceptable, never mind
> > > the emacs23 one, even on a 1.2GHz-class machine. Are a lot of
> > > people putting up with that sort of start time? Ouch.

> > Hey, don't be so hard on my poor little PC!  It's getting on a
> > bit[*].  There's 83 files being loaded by desktop, with a total of
> > 7801019 bytes.

> How many seconds does it take to run "sed -n -e s/xyzzy/xyzzy/p" on
> all those files, on that machine?  (That should give us a baseline of
> the disk and filesystem performance.)

From a cold start, "time grep wtioxxhs $BUFFERS" gave
real    0m1.798s
user    0m0.015s
sys     0m0.034s

Second time round, with the files presumably in the file cache:
real    0m0.034s
user    0m0.012s
sys     0m0.020s

So I don't think my PC's disk drives are the cause.

[ .... ]

-- 
Alan Mackenzie (Nuremberg, Germany).