GNU bug report logs - #20887
'make bootstrap' now verrrry slow due to recent isearch changes

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Paul Eggert <eggert <at> cs.ucla.edu>
Subject: bug#20887: closed (Re: bug#20887: 'make bootstrap' now verrrry
 slow due to recent isearch changes)
Date: Thu, 25 Jun 2015 02:49:02 +0000

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Your bug report

#20887: 'make bootstrap' now verrrry slow due to recent isearch changes

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 20887 <at> debbugs.gnu.org.

-- 
20887: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=20887
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Glenn Morris <rgm <at> gnu.org>
Cc: 20887-done <at> debbugs.gnu.org, Artur Malabarba <bruce.connor.am <at> gmail.com>
Subject: Re: bug#20887: 'make bootstrap' now verrrry slow due to recent isearch
 changes
Date: Wed, 24 Jun 2015 19:48:14 -0700

Glenn Morris wrote:
> No, because I do a proper bootstrap. Accept no imitations!:)
> There are no "stale" messages in such a build, and the isearch slowness
> only happens once.

OK.  Still, running this from a fresh checkout:

./autogen.sh
./configure
make

also exhibited the "stale" messages and the extreme slowdown.  So the problem 
wasn't limited to my rm hack (which I do, by the way, because it's ordinarily 
much faster than "make bootstrap").

Anyway, the performance bug seems to be fixed now -- thanks! -- so I'm marking 
this as done.

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From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Emacs bug reports and feature requests <bug-gnu-emacs <at> gnu.org>
Cc: Artur Malabarba <bruce.connor.am <at> gmail.com>
Subject: 'make bootstrap' now verrrry slow due to recent isearch changes
Date: Tue, 23 Jun 2015 18:35:12 -0700

When I run 'make bootstrap' now it's veerrrrry slow, hanging after this output:

...
Reloading stale subr-x.el
Loading /home/eggert/src/gnu/emacs/tmn/lisp/emacs-lisp/subr-x.el (source)...
Reloading stale isearch.el
Loading /home/eggert/src/gnu/emacs/tmn/lisp/isearch.el (source)...

It pauses for a loooongg time here (minutes) and then finally continues.  It has 
to do this many times during 'make bootstrap', so 'make bootstrap' is now 
realllly slooooow.

This is no doubt due to commit c7a19e0c80ec6134ab6fb1950d3e1ac59a7b986f, 
recently installed in the master, so I'm CC'ing Artur Malabarba.

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