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-rw-r--r--docs/manual/mod/mod_headers.xml18
1 files changed, 18 insertions, 0 deletions
diff --git a/docs/manual/mod/mod_headers.xml b/docs/manual/mod/mod_headers.xml
index 620ee5c90f..528e7f2d0d 100644
--- a/docs/manual/mod/mod_headers.xml
+++ b/docs/manual/mod/mod_headers.xml
@@ -427,6 +427,24 @@ Header merge Cache-Control no-store env=NO_STORE
of the request. The value is preceded by <code>D=</code>.
The value is measured in microseconds.</td></tr>
+ <tr><td><code>%l</code></td>
+ <td>The current load averages of the actual server itself. It is
+ designed to expose the values obtained by <code>getloadavg()</code>
+ and this represents the current load average, the 5 minute average, and
+ the 15 minute average. The value is preceded by <code>l=</code> with each
+ average separated by <code>/</code>.
+ </td></tr>
+
+ <tr><td><code>%i</code></td>
+ <td>The current idle percentage of httpd (0 to 100) based on available
+ processes and threads. The value is preceded by <code>i=</code>.
+ </td></tr>
+
+ <tr><td><code>%b</code></td>
+ <td>The current busy percentage of httpd (0 to 100) based on available
+ processes and threads. The value is preceded by <code>b=</code>.
+ </td></tr>
+
<tr><td><code>%{VARNAME}e</code></td>
<td>The contents of the <a href="../env.html">environment
variable</a> <code>VARNAME</code>.</td></tr>