Re: Improving emacs process performance (for free?)

[storm@cua.dk (Kim F. Storm)]

"Eli Zaretskii" <eliz@gnu.org> writes:

> > From: storm@cua.dk (Kim F. Storm)
> > Date: 26 May 2004 23:23:21 +0200
> > 
> > The buffer is allocated on the stack (with alloca), so it could be a
> > problem on systems with limited stack size -- do we still have such
> > systems?
> 
> How much limited is ``limited''?  Can you give a quantitative
> estimate?

My change uses extra 9K on the stack in read_process_output.
Since that function can call a filter, which in turn calls
accept-process-output (etc), you may look at perhaps 3*9K
xtra on the stack.

Also, read_process_output calls decode_coding_string which may
allocate 16K on the stack.

So a minimum stack usage would be 3*10+16 = 46KB + what's allocated
elsewhere.  Pretty close to 64K if you ask me :-|

-- 
Kim F. Storm <storm@cua.dk> http://www.cua.dk