diff options
Diffstat (limited to 'lisp/profiler.el')
| -rw-r--r-- | lisp/profiler.el | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/lisp/profiler.el b/lisp/profiler.el index 64d71f4aab2..4c427692cb8 100644 --- a/lisp/profiler.el +++ b/lisp/profiler.el @@ -499,7 +499,7 @@ RET: expand or collapse")) (defun profiler-report-header-line-format (fmt &rest args) (let* ((header (apply #'profiler-format fmt args)) - (escaped (replace-regexp-in-string "%" "%%" header))) + (escaped (string-replace "%" "%%" header))) (concat (propertize " " 'display '(space :align-to 0) @@ -822,8 +822,12 @@ below entry at point." (defun profiler-start (mode) "Start/restart profilers. MODE can be one of `cpu', `mem', or `cpu+mem'. -If MODE is `cpu' or `cpu+mem', time-based profiler will be started. -Also, if MODE is `mem' or `cpu+mem', then memory profiler will be started." +If MODE is `cpu' or `cpu+mem', start the time-based profiler, + whereby CPU is sampled periodically using the SIGPROF signal. +If MODE is `mem' or `cpu+mem', start profiler that samples CPU + whenever memory-allocation functions are called -- this is useful + if SIGPROF is not supported, or is unreliable, or is not sampling + at a high enough frequency." (interactive (list (if (not (fboundp 'profiler-cpu-start)) 'mem (intern (completing-read (format-prompt "Mode" "cpu") |