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Subject svn commit: r1057049 - /httpd/httpd/trunk/docs/manual/mod/mpm_common.xml
Date Sun, 09 Jan 2011 23:04:56 GMT
Author: covener
Date: Sun Jan  9 23:04:56 2011
New Revision: 1057049

warn about FAQ of trying to decrease thread stack size with ThreadStackSize
on Linux.


Modified: httpd/httpd/trunk/docs/manual/mod/mpm_common.xml
--- httpd/httpd/trunk/docs/manual/mod/mpm_common.xml (original)
+++ httpd/httpd/trunk/docs/manual/mod/mpm_common.xml Sun Jan  9 23:04:56 2011
@@ -741,6 +741,12 @@ client connections</description> 
       The minimum required stack size strongly depends on the modules
       used, but any change in the web server configuration can invalidate
       the current <directive>ThreadStackSize</directive> setting.</li>
+      <li>On Linux, this directive can only be used to increase the default
+      stack size, as the underlying system call uses the value as a 
+      <em>minimum</em> stack size.  The (often large) soft limit for 
+      <code>ulimit -s</code> (8MB if unlimited) is used as the default stack

+      size.</li>
     <note>It is recommended to not reduce <directive>ThreadStackSize</directive>

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