blob: 8baee47b22e0a82f0b8295b00d59f719892336f4 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
|
;;; profile-dotemacs.el --- Profile your Emacs init file
;; Copyright (C) 2010, 2012 David Engster
;; Author: David Engster <dengste@eml.cc>
;; This file is NOT part of GNU Emacs.
;; This program is free software; you can redistribute it and/or
;; modify it under the terms of the GNU General Public License
;; as published by the Free Software Foundation; either version 2
;; of the License, or (at your option) any later version.
;;
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;;
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;;
;; Profiles profile-dotemacs-file by evaluating top-level sexps with
;; benchmark-run, then overlays the source buffer so expensive forms stand out
;; by percentage of total runtime.
;;
;; Run with:
;; emacs -Q -l /path/to/profile-dotemacs.el -f profile-dotemacs
;;
;; Full sexps are the unit of measurement; split large conditional blocks before
;; profiling if finer detail is needed.
;;; Code:
(require 'thingatpt)
(require 'benchmark)
;; User variables
(defvar profile-dotemacs-file "~/.emacs.d/init.el"
"File to be profiled.")
(defvar profile-dotemacs-low-percentage 3
"Percentage which should be considered low.
All sexp's with a running time below this percentage will be
grayed out.")
(defface profile-dotemacs-time-face
'((((background dark)) (:background "OrangeRed1"))
(t (:background "red3")))
"Background color to indicate percentage of total time.")
(defface profile-dotemacs-low-percentage-face
'((((background dark)) (:foreground "gray25"))
(t (:foreground "gray75")))
"Face for sexps below `profile-dotemacs-low-percentage'.")
(defface profile-dotemacs-highlight-face
'((((background dark)) (:background "blue"))
(t (:background "yellow")))
"Highlight face for benchmark results.")
;; Main function
(defun profile-dotemacs ()
"Load `profile-dotemacs-file' and benchmark its sexps."
(interactive)
(with-current-buffer (find-file-noselect profile-dotemacs-file t)
(setq buffer-read-only t) ;; just to be sure
(goto-char (point-min))
(let (start end results)
(while
(< (point)
(setq end (progn
(forward-sexp 1)
(point))))
(forward-sexp -1)
(setq start (point))
(add-to-list
'results
`(,start ,end
,(benchmark-run
(eval (sexp-at-point)))))
(goto-char end))
(profile-dotemacs-show-results results)
(switch-to-buffer (current-buffer)))))
;; Helper functions
(defun profile-dotemacs-show-results (results)
"Show timings from RESULTS in current buffer."
(let ((totaltime (profile-dotemacs-totaltime results))
current percentage ov)
(while results
(let* ((current (pop results))
(ov (make-overlay (car current) (cadr current)))
(current (car (last current)))
(percentage (/ (+ (car current) (nth 2 current))
totaltime))
col benchstr lowface)
(setq col
(profile-dotemacs-percentage-color
percentage
(face-background 'default)
(face-background 'profile-dotemacs-time-face)))
(setq percentage (round (* 100 percentage)))
(setq benchstr (profile-dotemacs-make-benchstr current))
(overlay-put ov 'help-echo benchstr)
(if (and (numberp profile-dotemacs-low-percentage)
(< percentage profile-dotemacs-low-percentage))
(overlay-put ov 'face 'profile-dotemacs-low-percentage-face)
(overlay-put ov 'before-string
(propertize benchstr
'face 'profile-dotemacs-highlight-face))
(overlay-put ov 'face
`(:background ,col)))))
(setq ov (make-overlay (1- (point-max)) (point-max)))
(overlay-put ov 'after-string
(propertize
(format "\n-----------------\nTotal time: %.2fs\n"
totaltime)
'face 'profile-dotemacs-highlight-face))))
(defun profile-dotemacs-totaltime (results)
"Calculate total time of RESULTS."
(let ((totaltime 0))
(mapc (lambda (x)
(let ((cur (car (last x))))
(setq totaltime (+ totaltime (car cur) (nth 2 cur)))))
results)
totaltime))
(defun profile-dotemacs-percentage-color (percent col-begin col-end)
"Calculate color according to PERCENT between COL-BEGIN and COL-END."
(let* ((col1 (color-values col-begin))
(col2 (color-values col-end))
(col
(mapcar (lambda (c)
(round
(+ (* (- 1 percent) (nth c col1))
(* percent (nth c col2)))))
'(0 1 2))))
(format "RGB:%04x/%04x/%04x"
(car col)
(nth 1 col)
(nth 2 col))))
(defun profile-dotemacs-make-benchstr (timings)
"Create descriptive benchmark string from TIMINGS."
(format
(concat
"<Percentage: %d ; "
"Time: %.2f ; "
"Number of GC: %d ; "
"Time for GC: %.2f>\n")
percentage
(car timings) (nth 1 timings) (nth 2 timings)))
;; profile-dotemacs.el ends here
|
