diff options
| author | Stefan Monnier <monnier@iro.umontreal.ca> | 2017-02-20 14:05:41 -0500 |
|---|---|---|
| committer | Stefan Monnier <monnier@iro.umontreal.ca> | 2017-02-20 14:05:41 -0500 |
| commit | 160bcfeed6047b65cf8b9f00c404061b03dfe141 (patch) | |
| tree | 339ced0e1542dc8b40b4f9e244df91c1d5e52184 /src/insdel.c | |
| parent | 27a76829fe71efcb048686a3c42221aec1020f10 (diff) | |
| download | emacs-160bcfeed6047b65cf8b9f00c404061b03dfe141.tar.gz | |
* src/insdel.c (make_gap): Improve comment.
Diffstat (limited to 'src/insdel.c')
| -rw-r--r-- | src/insdel.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/insdel.c b/src/insdel.c index 76af3ff9a4c..5a95d41e7ab 100644 --- a/src/insdel.c +++ b/src/insdel.c @@ -572,7 +572,9 @@ make_gap (ptrdiff_t nbytes_added) * With /4096 => 131s * With /∞ => gave up after 858s * Of couse, ideally we should never call set-buffer-multibyte on - * a non-empty buffer (e.g. use buffer-swa-text instead). */ + * a non-empty buffer (e.g. use buffer-swap-text instead). + * We chose /64 because it already brings almost the best performance while + * limiting the potential wasted memory to 1.5%. */ make_gap_larger (max (nbytes_added, (Z - BEG) / 64)); #if defined USE_MMAP_FOR_BUFFERS || defined REL_ALLOC || defined DOUG_LEA_MALLOC else |