(setq n (* n memory-usage-word-size))
(cons (* n (car c)) (* n (cdr c))))
+(defun memory-usage-format (bytes)
+ (setq bytes (/ bytes 1024.0))
+ (let ((units '(;; "B"
+ "kB" "MB" "GB" "TB")))
+ (while (>= bytes 1024)
+ (setq bytes (/ bytes 1024.0))
+ (setq units (cdr units)))
+ (cond
+ ;; ((integerp bytes) (format "%4d%s" bytes (car units)))
+ ((>= bytes 100) (format "%4.0f%s" bytes (car units)))
+ ((>= bytes 10) (format "%4.1f%s" bytes (car units)))
+ (t (format "%4.2f%s" bytes (car units))))))
+
;;;###autoload
(defun memory-usage ()
"List all buffers and their memory usage."
(floats (memory-usage-mult-cons 2 (nth 5 gc-stats)))
(intervals (memory-usage-mult-cons 7 (nth 6 gc-stats)))
(strings (memory-usage-mult-cons 4 (nth 7 gc-stats))))
+ (if (consp vectors) (setq vectors (cdr vectors)))
(insert (format "Garbage collection stats:\n%s\n\n =>" gc-stats))
- (insert (format "\t%d+%d bytes in cons cells\n" (car conses) (cdr conses)))
- (insert (format "\t%d+%d bytes in symbols\n" (car symbols) (cdr symbols)))
- (insert (format "\t%d+%d bytes in markers\n" (car markers) (cdr markers)))
- (insert (format "\t%d+%d bytes in floats\n" (car floats) (cdr floats)))
- (insert (format "\t%d+%d bytes in intervals\n"
- (car intervals) (cdr intervals)))
- (insert (format "\t%d+%d bytes in string headers\n"
- (car strings) (cdr strings)))
- (insert (format "\t%d bytes of string chars\n" chars))
- (insert (format "\t%d bytes of vector slots\n" vectors))
+ (dolist (x `(("cons cells" . ,conses)
+ ("symbols" . ,symbols)
+ ("markers" . ,markers)
+ ("floats" . ,floats)
+ ("intervals" . ,intervals)
+ ("string headers" . ,strings)))
+ (insert (format "\t%s (+ %s dead) in %s\n"
+ (memory-usage-format (cadr x))
+ (memory-usage-format (cddr x))
+ (car x))))
+ (insert (format "\t%s of string chars\n" (memory-usage-format chars)))
+ (insert (format "\t%s of vector slots\n" (memory-usage-format vectors)))
(let ((live (+ (car conses)
(car symbols)
(car markers)
(cdr intervals)
(cdr strings))))
- (insert (format "\nTotal bytes in lisp objects: %d (live %d, dead %d)\n\n"
- (+ dead live) live dead)))
-
- (insert (format "Buffer ralloc memory usage:\n%d buffers\n%d bytes total (%d in gaps)\n"
- num
- (apply #'+ (mapcar #'memory-usage-buffer-total-bytes bufs))
- (apply #'+ (mapcar #'memory-usage-buffer-gap-bytes bufs))))
+ (insert (format "\nTotal in lisp objects: %s (live %s, dead %s)\n\n"
+ (memory-usage-format (+ dead live))
+ (memory-usage-format live)
+ (memory-usage-format dead))))
+
+ (insert
+ (format "Buffer ralloc memory usage:\n%d buffers\n%s total (%s in gaps)\n"
+ num
+ (memory-usage-format
+ (apply #'+ (mapcar #'memory-usage-buffer-total-bytes bufs)))
+ (memory-usage-format
+ (apply #'+ (mapcar #'memory-usage-buffer-gap-bytes bufs)))))
(insert (format "%10s\t%s\t%s\n\n" "Size" "Gap" "Name"))
(insert (mapconcat
(lambda (b)
(insert "\n"))
(goto-char (point-min)))
+(defun memory-usage-find-large-variables ()
+ "Find variables whose printed representation takes over 100KB."
+ (interactive)
+ (let ((min-size (* 100 1024)))
+ (pop-to-buffer "*Memory Explorer*")
+ (delete-region (point-min) (point-max))
+ ;; First find large global variables.
+ (mapatoms
+ (lambda (sym)
+ (let ((size (or (and (boundp sym)
+ (length (prin1-to-string (symbol-value sym))))
+ 0)))
+ (when (> size min-size)
+ (insert (format "%d\tGlobal\t%s\n"
+ size
+ (symbol-name sym)))))))
+ ;; Second find large buffer-local variables.
+ (mapc
+ (lambda (buffer)
+ (let ((holder ""))
+ (with-current-buffer buffer
+ (mapc
+ (lambda (var-cons)
+ (let ((size (or (and (consp var-cons)
+ (length (prin1-to-string (cdr var-cons))))
+ 0)))
+ (if (> size min-size)
+ (setq holder (format "%d\t%s\t%s\n"
+ size (buffer-name buffer)
+ (symbol-name (car var-cons)))))))
+ (buffer-local-variables)))
+ (insert holder)))
+ (buffer-list))
+ (sort-numeric-fields 1 (point-min) (point-max))))
(provide 'memory-usage)
-;; arch-tag: 04e012f0-3c59-4319-8d1a-e86204671ec5
;;; memory-usage.el ends here