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bug#29889: 27.0.50; Slow visual selection
From: |
Sujith |
Subject: |
bug#29889: 27.0.50; Slow visual selection |
Date: |
Sun, 31 Dec 2017 10:55:32 +0530 |
User-agent: |
mu4e 0.9.18; emacs 27.0.50 |
Eli Zaretskii <eliz@gnu.org> writes:
> Run Emacs under 'perf' (or build with C-level profiling), and show the
> C-level profile while moving the cursor with region highlighted? That
> should tell whether my hypothesis above holds any water, and if not,
> point out some other suspects.
I did 'perf record emacs' and then 'perf report --stdio'.
Profile report (just the top few lines):
# Overhead Command Shared Object Symbol
# ........ ........... ..........................
................................
#
41.09% emacs emacs-27.0.50 [.] mark_object
10.90% emacs emacs-27.0.50 [.] balance_an_interval
4.23% emacs emacs-27.0.50 [.] mark_interval
3.77% emacs emacs-27.0.50 [.] Flength
3.45% emacs emacs-27.0.50 [.] sweep_strings
3.11% emacs emacs-27.0.50 [.] sweep_conses
2.94% emacs emacs-27.0.50 [.]
balance_intervals_internal
2.85% emacs emacs-27.0.50 [.] sweep_intervals
1.91% emacs emacs-27.0.50 [.]
traverse_intervals_noorder
1.70% emacs emacs-27.0.50 [.] mark_char_table
1.65% emacs emacs-27.0.50 [.] next_interval
1.52% emacs emacs-27.0.50 [.] copy_intervals
1.50% emacs emacs-27.0.50 [.] concat
1.43% emacs emacs-27.0.50 [.] sweep_vectors
1.28% emacs emacs-27.0.50 [.] scan_sexps_forward
0.93% emacs emacs-27.0.50 [.] Fcons
0.84% emacs emacs-27.0.50 [.] exec_byte_code
0.81% emacs emacs-27.0.50 [.] sweep_symbols
0.72% emacs emacs-27.0.50 [.] re_match_2_internal
Using gprof with --enable-profiling, the report looks like:
Flat profile:
Each sample counts as 0.01 seconds.
% cumulative self self total
time seconds seconds calls ms/call ms/call name
33.97 6.33 6.33 111195700 0.00 0.00 mark_object
10.26 8.24 1.91 31639099 0.00 0.00 balance_an_interval
3.54 8.90 0.66 22239242 0.00 0.00 mark_interval
2.95 9.45 0.55 7431 0.07 0.25 balance_intervals_internal
2.79 9.97 0.52 223 2.33 10.50 sweep_strings
2.42 10.42 0.45 7826133 0.00 0.00 Flength
2.42 10.87 0.45 223 2.02 2.26 sweep_conses
2.09 11.26 0.39 223 1.75 1.89 sweep_intervals
2.09 11.65 0.39 419665 0.00 0.00 assq_no_quit
2.04 12.03 0.38 11148108 0.00 0.00 next_interval
1.93 12.39 0.36 42738 0.01 0.02 scan_sexps_forward
1.88 12.74 0.35 7482960 0.00 0.00 concat
1.66 13.05 0.31 24810407 0.00 0.00 FETCH_MULTIBYTE_CHAR
1.40 13.31 0.26 34595 0.01 0.01 mark_char_table
1.34 13.56 0.25 7431 0.03 0.12 traverse_intervals_noorder
1.29 13.80 0.24 422335 0.00 0.00 exec_byte_code
1.18 14.02 0.22 223 0.99 1.14 sweep_vectors
1.07 14.22 0.20 282 0.71 0.71 evxprintf
- bug#29889: 27.0.50; Slow visual selection, Sujith, 2017/12/28
- bug#29889: 27.0.50; Slow visual selection, Eli Zaretskii, 2017/12/29
- bug#29889: 27.0.50; Slow visual selection, Sujith, 2017/12/29
- bug#29889: 27.0.50; Slow visual selection, Eli Zaretskii, 2017/12/30
- bug#29889: 27.0.50; Slow visual selection,
Sujith <=
- bug#29889: 27.0.50; Slow visual selection, Eli Zaretskii, 2017/12/31
- bug#29889: 27.0.50; Slow visual selection, Eli Zaretskii, 2017/12/31
- bug#29889: 27.0.50; Slow visual selection, Sujith, 2017/12/31
- bug#29889: 27.0.50; Slow visual selection, Eli Zaretskii, 2017/12/31
- bug#29889: 27.0.50; Slow visual selection, Eli Zaretskii, 2017/12/31