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From: Stephen Berman <stephen.berman@gmx.net>
To: James McClain <jamezmcclain@gmail.com>
Cc: Nicolas Petton <nicolas@petton.fr>, 23457@debbugs.gnu.org
Subject: bug#23457: 24.5; interactive use of next-line and previous-line (holding down C-n or C-p) lag in a buffer with all spaces and newlines
Date: Fri, 06 May 2016 11:13:46 +0200	[thread overview]
Message-ID: <874mab8s6t.fsf@gmx.net> (raw)
In-Reply-To: <CAEsaJvPTBHbrdnmwUvO27A0PAgXN90MZKthKMuAk-_7+nWNgzg@mail.gmail.com> (James McClain's message of "Fri, 6 May 2016 01:43:55 -0700")

On Fri, 6 May 2016 01:43:55 -0700 James McClain <jamezmcclain@gmail.com> wrote:

> Here is another take on the recipe, hopefully I can clear up any confusion.
> This is without resizing the window, so window-body-width should be 80.
> 1. .\emacs-25.0.93.exe -Q
> 2. C-x b test-2 <ret>
> 3. <f3>
> 4. C-u 80 <space>
> 5. C-j
> 6. <f4>
> 7. C-u 120 <f4>
> 8. You should now be at the bottom of the buffer and at the first column,
>     but it doesn't hurt to hit M-> and C-a, so do that.
> 9. Now try moving up to the top of the buffer with C-p
>
> I experience lag doing this [...]

I can reproduce this with the above recipe.  At step 9 I held down C-p
for five seconds; after about 1 second point moved up one line (from 122
to 121), then Emacs froze for about 45 seconds, after which point jumped
to bob.

Here's my build:

In GNU Emacs 25.0.93.3 (x86_64-suse-linux-gnu, GTK+ Version 3.14.15)
 of 2016-05-04 built on rosalinde
Repository revision: adc80b7e238e09b1b8c392ecf902d2b978d9016d
Windowing system distributor 'The X.Org Foundation', version 11.0.11601000
System Description:	openSUSE 13.2 (Harlequin) (x86_64)

Configured using:
 'configure --with-xwidgets 'CFLAGS=-Og -g3''

Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND DBUS GCONF GSETTINGS NOTIFY
GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB TOOLKIT_SCROLL_BARS
GTK3 X11 XWIDGETS

Important settings:
  value of $LANG: en_US.UTF-8
  value of $XMODIFIERS: @im=ibus
  locale-coding-system: utf-8-unix


And here's /proc/cpuinfo:

processor       : 0
vendor_id       : AuthenticAMD
cpu family      : 15
model           : 95
model name      : AMD Sempron(tm) Processor 3400+
stepping        : 2
cpu MHz         : 1000.000
cache size      : 256 KB
physical id     : 0
siblings        : 1
core id         : 0
cpu cores       : 1
apicid          : 0
initial apicid  : 0
fpu             : yes
fpu_exception   : yes
cpuid level     : 1
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext fxsr_opt rdtscp lm 3dnowext 3dnow rep_good nopl extd_apicid pni cx16 lahf_lm extapic cr8_legacy
bogomips        : 2010.12
TLB size        : 1024 4K pages
clflush size    : 64
cache_alignment : 64
address sizes   : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp tm stc

Steve Berman





  reply	other threads:[~2016-05-06  9:13 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-05-05  9:01 bug#23457: 24.5; interactive use of next-line and previous-line (holding down C-n or C-p) lag in a buffer with all spaces and newlines jamezmcclain
2016-05-05 16:01 ` Eli Zaretskii
     [not found]   ` <CAEsaJvOMYP=VtqjdH06Yztagn084yYMe2QW986=nq6nv5pKc4g@mail.gmail.com>
2016-05-05 19:26     ` Eli Zaretskii
2016-05-05 19:59       ` Eli Zaretskii
2016-05-06  0:34         ` James McClain
2016-05-06  7:03           ` Eli Zaretskii
2016-05-06  7:59             ` Nicolas Petton
2016-05-06  8:41               ` Eli Zaretskii
2016-05-06  8:43               ` James McClain
2016-05-06  9:13                 ` Stephen Berman [this message]
2016-05-06  9:20                   ` Eli Zaretskii
2016-05-06  9:15                 ` Eli Zaretskii
2016-05-06  9:19                   ` James McClain
2016-05-06  9:24                     ` Eli Zaretskii
2016-05-07  8:02                       ` Eli Zaretskii

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