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bug#895: slow processing of process output
From: |
Markus Triska |
Subject: |
bug#895: slow processing of process output |
Date: |
Sun, 01 Mar 2009 15:33:14 +0100 |
I can reproduce the problem on OSX, and could significantly improve the
running time by setting process-connection-type to nil before doing the
rgrep. Let rgrep.el consist of:
(grep-compute-defaults)
(setq process-connection-type nil)
(rgrep "emacs" "*.el" "~/emacs/lisp/")
(while (process-status "grep")
(sit-for 0.1))
and do:
$ time emacs -Q --script rgrep.el
Then contrast this with retaining t for process-connection-type.
I have seen that using a pty can be a major performance problem also
when communicating with other external programs, and I recommend to
let-bind it to nil before starting the process when a pipe suffices.
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