regen

diff --git a/FAQ.xml b/FAQ.xml
index 1cb66a176316017f73e65f0ca183a117cb9eb179..3b0c8dffedb1fe94aa7d44292c99ef5535e85672 100644 (file)
--- a/FAQ.xml
+++ b/FAQ.xml
@@ -17,7 +17,7 @@
  - PERFORMANCE OF THIS SOFTWARE.
 -->
 
-<!-- $Id: FAQ.xml,v 1.4.4.12 2007/09/05 13:49:41 marka Exp $ -->
+<!-- $Id: FAQ.xml,v 1.4.4.13 2007/09/24 02:40:29 marka Exp $ -->
 
 <article class="faq">
   <title>Frequently Asked Questions about BIND 9</title>
@@ -620,6 +620,49 @@ zone "list.dsbl.org" {
       </answer>
     </qandaentry>
     
+        <qandaentry>
+          <question>
+       <para>
+         Can you help me understand how BIND 9 uses memory to store DNS zones?
+       </para>
+       <para>
+         Some times it seems to take several times the amount of memory it needs to store the zone.
+       </para>
+          </question>
+          <answer>
+            <para>
+               When reloading a zone named my have multiple copies of the
+               zone in memory at one time.  The zone it is serving and the
+               one it is loading.  If reloads are ultra fast it can have more
+               still.
+               </para>
+            <para>
+               e.g.
+                       Ones that are transferring out, the one that it is serving
+               and the one that is loading.
+               </para>
+          <para>
+               BIND 8 destroyed the zone before loading and also killed
+               off outgoing transfers of the zone.
+               </para>
+          <para>
+               The new strategy allows slaves to get copies of the new
+               zone regardless of how often the master is loaded compared
+               to the transfer time.  The slave might skip some intermediate
+               versions but the transfers will complete and it will
+               keep reasonably in sync with the master.
+               </para>
+          <para>
+               The new strategy also allows the master to recover from
+               syntax and other errors in the master file as it still has
+               an in-core copy of the old contents.
+               </para>
+          </answer>
+        </qandaentry>
+    
+    
+    
+    
     </qandadiv> <!-- Configuration and Setup Questions -->
     
     <qandadiv><title>General Questions</title>