X-Git-Url: http://sigaev.ru/git/gitweb.cgi?p=plantuner.git;a=blobdiff_plain;f=README.plantuner;fp=README.plantuner;h=49141c0d932921abe797de2b39640e3986cac3be;hp=2d01f8e28d8f3026c31cef0d464a0d369a3b0f8f;hb=a07b2ca58b6804b8a261e674a159eb442362471a;hpb=6f6cf9c1eceefad467bbe333fd3ed270ea937bdf

diff --git a/README.plantuner b/README.plantuner
index 2d01f8e..49141c0 100644
--- a/README.plantuner
+++ b/README.plantuner
@@ -23,6 +23,12 @@ Motivation
    specific index(es), without dropping them, or to instruct planner to
    use specific index.
 
+   Next, for some workload PostgreSQL could be too pessimistic for
+   newly created tables and assumps much more rows in table than
+   it actually has. If plantuner.fix_empty_table GUC variable is set
+   to true then module will set to zero number of pages/tuples of
+   table which hasn't blocks in file.
+
 Installation
 
      * Get latest source of plantuner from CVS Repository