GNU bug report logs - #18713
Very slow startups with TERM=xterm

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Roy Smith <roy <at> panix.com>
To: bug-gnu-emacs <at> gnu.org
Subject: Very slow startups with TERM=xterm
Date: Mon, 13 Oct 2014 19:00:45 -0400

[Message part 1 (text/plain, inline)]

I'm running GNU Emacs 24.3.1, with the -nw flag.  If have TERM=xterm or TERM=xterm-256color, it takes 2 or 3 seconds to start up.  Setting TERM=ansi (or vt100, or vt102), I get instant startups.  I'm running on goobuntu (Google's own flavor of ubuntu linux)

Tracing the emacs process as it starts up, I see that all the time is spent in a set of select() calls (fd 3 is "/dev/tty" at this point):

15215 pselect6(4, [3], [], NULL, {1, 996360390}, {NULL, 8}) = 1 (in [3], left {1, 980201052}) <0.016169>
15215 pselect6(4, [3], [], NULL, {1, 999612379}, {NULL, 8}) = 0 (Timeout) <2.001673>
15215 pselect6(4, [3], [], NULL, {0, 499948991}, {NULL, 8}) = 0 (Timeout) <0.500516>
15215 pselect6(4, [3], [], NULL, {27, 497597665}, {NULL, 8}) = 1 (in [3], left {27, 83731691}) <0.413916>
15215 pselect6(4, [3], [], NULL, {0, 499864020}, {NULL, 8}) = 1 (in [3], left {0, 287729575}) <0.212174>
Based on the write() calls I see to fd 3 immediately before this, it looks like it's in the process of initializing the screen.  Does this sound like I'm running into http://lists.gnu.org/archive/html/bug-gnu-emacs/2013-06/msg00362.html?

--
Roy Smith
roy <at> panix.com

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Message #8 received at 18713 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Roy Smith <roy <at> panix.com>
Cc: 18713 <at> debbugs.gnu.org
Subject: Re: bug#18713: Very slow startups with TERM=xterm
Date: Tue, 14 Oct 2014 09:21:43 +0300

> From: Roy Smith <roy <at> panix.com>
> Date: Mon, 13 Oct 2014 19:00:45 -0400
> 
> I'm running GNU Emacs 24.3.1, with the -nw flag. If have TERM=xterm or
> TERM=xterm-256color, it takes 2 or 3 seconds to start up. Setting TERM=ansi (or
> vt100, or vt102), I get instant startups. I'm running on goobuntu (Google's own
> flavor of ubuntu linux)

Please try a recent pretest of Emacs 24.4 (available from
alpha.gnu.org and probably also from goobuntu), I believe this was
already solved there.

See http://debbugs.gnu.org/cgi/bugreport.cgi?bug=17648.

Message #11 received at 18713 <at> debbugs.gnu.org (full text, mbox):

From: Roy Smith <roy <at> panix.com>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 18713 <at> debbugs.gnu.org
Subject: Re: bug#18713: Very slow startups with TERM=xterm
Date: Tue, 14 Oct 2014 10:33:39 -0400

[Message part 1 (text/plain, inline)]

I downloaded emacs-24.3.94 (I assume that’s what you intended?) and built it with:

./configure --prefix=`/bin/pwd` --with-x-toolkit=no --with-xpm=no --with-jpeg=no --with-png=no --with-gif=n
o --with-tiff=no
./configure --prefix=`/bin/pwd` --with-x-toolkit=no --with-xpm=no --with-jpeg=no --with-png=no --with-gif=n
o --with-tiff=no

It has exactly the same behavior.  Starting it with TERM=xterm-256color, it takes a couple of seconds to get to the welcome screen.  Same pselect6() calls in the trace output:

pselect6(4, [3], [], NULL, {1, 995148137}, {NULL, 8}) = 1 (in [3], left {1, 952766953}) <0.042444>
pselect6(4, [3], [], NULL, {1, 999909468}, {NULL, 8}) = 0 (Timeout) <2.000402>
pselect6(4, [3], [], NULL, {0, 499943592}, {NULL, 8}) = 0 (Timeout) <0.500541>
pselect6(4, [3], [], NULL, {29, 498901886}, {NULL, 8}) = 1 (in [3], left {29, 361558588}) <0.137381>
pselect6(4, [3], [], NULL, {0, 499841425}, {NULL, 8}) = 1 (in [3], left {0, 308628336}) <0.191243>

TERM=ansi starts instantly.


On Oct 14, 2014, at 2:21 AM, Eli Zaretskii <eliz <at> gnu.org> wrote:

>> From: Roy Smith <roy <at> panix.com>
>> Date: Mon, 13 Oct 2014 19:00:45 -0400
>> 
>> I'm running GNU Emacs 24.3.1, with the -nw flag. If have TERM=xterm or
>> TERM=xterm-256color, it takes 2 or 3 seconds to start up. Setting TERM=ansi (or
>> vt100, or vt102), I get instant startups. I'm running on goobuntu (Google's own
>> flavor of ubuntu linux)
> 
> Please try a recent pretest of Emacs 24.4 (available from
> alpha.gnu.org and probably also from goobuntu), I believe this was
> already solved there.
> 
> See http://debbugs.gnu.org/cgi/bugreport.cgi?bug=17648.
> 
> 
> 

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Message #14 received at 18713 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: Roy Smith <roy <at> panix.com>
Cc: Eli Zaretskii <eliz <at> gnu.org>, 18713 <at> debbugs.gnu.org
Subject: Re: bug#18713: Very slow startups with TERM=xterm
Date: Tue, 14 Oct 2014 19:44:56 -0400

> I downloaded emacs-24.3.94 (I assume that’s what you intended?) and built it with:
> ./configure --prefix=`/bin/pwd` --with-x-toolkit=no --with-xpm=no --with-jpeg=no --with-png=no --with-gif=n
> o --with-tiff=no
> ./configure --prefix=`/bin/pwd` --with-x-toolkit=no --with-xpm=no --with-jpeg=no --with-png=no --with-gif=n
> o --with-tiff=no

> It has exactly the same behavior.  Starting it with TERM=xterm-256color, it
> takes a couple of seconds to get to the welcome screen.  Same pselect6()
> calls in the trace output:

Could you show the result of typing `C-h l' right after this slow startup?


        Stefan

Message #17 received at 18713 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: Roy Smith <roy <at> panix.com>
Cc: Eli Zaretskii <eliz <at> gnu.org>, 18713 <at> debbugs.gnu.org
Subject: Re: bug#18713: Very slow startups with TERM=xterm
Date: Tue, 14 Oct 2014 19:45:44 -0400

> It has exactly the same behavior.  Starting it with TERM=xterm-256color, it
> takes a couple of seconds to get to the welcome screen.  Same pselect6()
> calls in the trace output:

Also, could you describe precisely what terminal emulator you're
using (including version number)?


        Stefan

Message #20 received at 18713 <at> debbugs.gnu.org (full text, mbox):

From: Noam Postavsky <npostavs <at> gmail.com>
To: Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: Eli Zaretskii <eliz <at> gnu.org>, Roy Smith <roy <at> panix.com>,
 18713 <at> debbugs.gnu.org
Subject: Re: bug#18713: Very slow startups with TERM=xterm
Date: Tue, 05 Jun 2018 20:11:50 -0400

tags 18713 + moreinfo
close 18713
quit

Stefan Monnier <monnier <at> iro.umontreal.ca> writes:

>> I downloaded emacs-24.3.94 (I assume that’s what you intended?) and built it with:
>> ./configure --prefix=`/bin/pwd` --with-x-toolkit=no --with-xpm=no --with-jpeg=no --with-png=no --with-gif=n
>> o --with-tiff=no
>> ./configure --prefix=`/bin/pwd` --with-x-toolkit=no --with-xpm=no --with-jpeg=no --with-png=no --with-gif=n
>> o --with-tiff=no
>
>> It has exactly the same behavior.  Starting it with TERM=xterm-256color, it
>> takes a couple of seconds to get to the welcome screen.  Same pselect6()
>> calls in the trace output:
>
> Could you show the result of typing `C-h l' right after this slow startup?

> Also, could you describe precisely what terminal emulator you're
> using (including version number)?

Closing since OP hasn't responded.

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