Re: Memory again

[Dmitry Antipov]

On 12/07/2011 11:52 AM, Eli Zaretskii wrote:

> You are, in fact, saying that fontifying a 60-MByte compilation buffer
> creates text properties and other supporting data structures that can
> accrue to a total of 2G bytes.  I find this extremely hard to believe.
> A simple calculation will show that a file that has 1 million lines
> with 5 different faces (warning, line number, column number,
> underline, default) per line needs only a few million intervals -- how
> can this require 2G bytes of memory?

Start fresh Emacs instance, make sure you're in *scratch*. Type M-x
compilation-minor-mode, then eval (staying in *scratch*, of course):

(let ((x 0)) (while (< x 1000000) (insert "test:1:oops\n") (setq x (1+ x))))

Wait for completion, then see RSS. Next, kill *scratch*, M-x garbage-collect
and see RSS again.

Dmitry