Re: Performance issues after upgrading from Emacs 23.3 to 24.3+prelude

[Nicolas Goaziou <n.goaziou@gmail.com>]

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Hello,

Karl Voit <devnull@Karl-Voit.at> writes:

> IMHO, the profiler reports showed a common pattern: a reasonable
> amount of CPU got into line-number-at-pos if I read the profiler
> report correctly. (see below)

Does the following patch improve the situation?


Regards,

-- 
Nicolas Goaziou

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From 54b8e7466d4689be3c34f7041244563771e2178a Mon Sep 17 00:00:00 2001
From: Nicolas Goaziou <n.goaziou@gmail.com>
Date: Thu, 9 Jan 2014 20:36:23 +0100
Subject: [PATCH] ob-core: Speed improvement

* lisp/ob-core.el (org-babel-get-inline-src-block-matches): Do not
  compute line number if all is needed is to know if we're on the
  first one.
---
 lisp/ob-core.el | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lisp/ob-core.el b/lisp/ob-core.el
index f06cdaf..e8943c6 100644
--- a/lisp/ob-core.el
+++ b/lisp/ob-core.el
@@ -217,7 +217,7 @@ Returns non-nil if match-data set"
   (let ((src-at-0-p (save-excursion
 		      (beginning-of-line 1)
 		      (string= "src" (thing-at-point 'word))))
-	(first-line-p (= 1 (line-number-at-pos)))
+	(first-line-p (= (line-beginning-position) (point-min)))
 	(orig (point)))
     (let ((search-for (cond ((and src-at-0-p first-line-p  "src_"))
 			    (first-line-p "[[:punct:] \t]src_")
-- 
1.8.5.2