fsync test tools

Add link to exteran fsync testing script and our fsync test tool.

diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml
index e4a79782ae372a611578d1557a21acbf93dadd19..2cb006fa7524d8f839ff5bde71e09cbbd7252b51 100644 (file)
--- a/doc/src/sgml/config.sgml
+++ b/doc/src/sgml/config.sgml
@@ -1,4 +1,4 @@
-
+
 
 
   Server Configuration
@@ -1432,6 +1432,8 @@ SET ENABLE_SEQSCAN TO OFF;
         The default is the first method in the above list that is supported
         by the platform.
         The open_* options also use O_DIRECT if available.
+        The utility src/tools/fsync in the PostgreSQL source tree
+        can do performance testing of various fsync methods.
         This parameter can only be set in the postgresql.conf
         file or on the server command line.
        

diff --git a/doc/src/sgml/wal.sgml b/doc/src/sgml/wal.sgml
index c21e4a4d6230943a168c77634f72b095d02d403d..76f1fdcf3b8d8e43a12a51f234719b2f379de1fc 100644 (file)
--- a/doc/src/sgml/wal.sgml
+++ b/doc/src/sgml/wal.sgml
@@ -1,4 +1,4 @@
-
+
 
 
  Reliability and the Write-Ahead Log
@@ -86,6 +86,8 @@
    ensure data integrity.  Avoid disk controllers that have non-battery-backed
    write caches.  At the drive level, disable write-back caching if the
    drive cannot guarantee the data will be written before shutdown.
+   You can test for reliable I/O subsystem behavior using 
+   url="http://brad.livejournal.com/2116715.html">diskchecker.pl.