add faq entry for new autoSync option

git-svn-id: https://svn.code.sf.net/p/jackcess/code/jackcess/trunk@142 f203690c-595d-4dc9-a70b-905162fa7fd2

diff --git a/xdocs/faq.fml b/xdocs/faq.fml
index 72c2a991dc9ca5f48ae831e7e94dd2609f7e6b33..025f0245b90295e055ee03658f8576e65380b042 100644 (file)
--- a/xdocs/faq.fml
+++ b/xdocs/faq.fml
@@ -140,6 +140,22 @@
       </answer>
     </faq>
 
+    <faq id="speed">
+      <question>Why is jackcess so slow for large updates?</question>
+      <answer>
+        <p>
+          While there is much room for improvement in update speed, one factor
+          is whether or not all writes are automatically forced to disk.  By
+          default, "autoSync" is enabled, which keeps the database file in a
+          more consistent state, but can be very slow for large updates.
+          Disabling "autoSync" can dramatically increase update speed, but
+          exceptions during update can leave the file in an unusable state.
+          So, modifying this option essentially trades off speed for
+          recoverability.
+        </p>
+      </answer>
+    </faq>
+    
     <faq id="hms">
       <question>Who is Health Market Science?</question>
       <answer>