another tip

[ikiwiki.git] / doc / tips / optimising_ikiwiki.mdwn

diff --git a/doc/tips/optimising_ikiwiki.mdwn b/doc/tips/optimising_ikiwiki.mdwn
index 085ef0306760de98a0d87a466f6a470cc1472aca..caed75ba6fb18356c37dbdf249c6e815a4fdf88c 100644 (file)
--- a/doc/tips/optimising_ikiwiki.mdwn
+++ b/doc/tips/optimising_ikiwiki.mdwn
@@ -38,6 +38,14 @@ If your version of ikiwiki is not [[!version]], try upgrading. New
 optimisations are frequently added to ikiwiki, some of them yielding
 *enormous* speed increases.
 
+## run ikiwiki in verbose mode
+
+Try changing a page, and run ikiwiki with `-v` so it will tell you
+everything it does to deal with that changed page. Take note of
+which other pages are rebuilt, and which parts of the build take a long
+time. This can help you zero in on individual pages that contain some of
+the expensive things listed below. 
+
 ## expensive inlines
 
 Do you have an archive page for your blog that shows all posts, 
@@ -64,7 +72,7 @@ smaller.
        
        \[[!inline pages="blog/* and link(tag)" show=0 archive=yes quick=yes]]
 
-Only downsides: This won't show titles set by the [[!ikiwiki/directive/meta]]
+Only downsides: This won't show titles set by the [[ikiwiki/directive/meta]]
 directive. And there's no RSS feed for users to use -- but if this page
 is only for the archives or tag for your blog, users should be subscribing
 to the blog's main page's RSS feed instead.
@@ -85,7 +93,7 @@ The resulting html file might get big and expensive to generate as you
 keep adding pages.
 
 First, consider removing the "show=title". Then the map will not show page
-titles set by the [[!ikiwiki/directive/meta]] directive -- but will also
+titles set by the [[ikiwiki/directive/meta]] directive -- but will also
 only need to be generated when pages are added or removed, not for every
 page change.
 
@@ -148,7 +156,7 @@ ikiwiki.
 
 The best way to do it is:
 
-* Install [[cpan Devel::NYTProf]]
+* Install [[!cpan Devel::NYTProf]]
 * `PERL5OPT=-d:NYTProf`
 * `export PER5OPT`
 * Now run ikiwiki as usual, and it will generate a `nytprof.out` file.
@@ -168,7 +176,7 @@ Finally, let's think about how huge number of pages can affect ikiwiki.
   quickly, but still, lots more pages will make PageSpecs more expensive.
 
 * The backlinks calculation has to consider every link on every page
-  in the wiki. (In practice, most pages only like to at most a few dozen
+  in the wiki. (In practice, most pages only link to at most a few dozen
   other pages, so this is not a `O(N^2)`, but closer to `O(N)`.)
 
 * Ikiwiki also reads and writes an `index` file, which contains information