Re: [PATCH] Re: redisplay-dont-pause is not mentioned in the Emacs manual

[Jan Djärv]

Kim F. Storm skrev:
> Richard Stallman <address@hidden> writes:

> > Pre-emption probably doesn't work very well with added latency of an
> > internet connection, especially given all the buffering.  (The Supdup
> > protocol, which I worked on in 1980 or so, limited the amount of
> > buffering so that pre-emption of Emacs redisplay would work better.)
> > Usually the whole screenful will get buffered anyway.
>
> Does the X protocol buffer requests like that?  Last time I looked,
> it didn't do much buffering before transmitting on the wire.  But
> IIRC, there may be some X-aware protocol which does buffering.

For the client (Emacs) X buffers all outgoing requests, until you do an 
XFlush, XSync or tries to read another XEvent (XNextEvent and such) or until 
the output buffer becomes full.

For the server, X buffers answers before sending.  If there is an answer to be 
sent but there is another incoming request from a client, the answers are not 
sent until the input buffer is empty (except for "important" stuff, such as 
errors).

That said, your changes seem to have a positive effect on slow connections, it 
feels faster.

        Jan D.