diff -ruN ../mysql-5.5.8/storage/innobase/fsp/fsp0fsp.c ./storage/innobase/fsp/fsp0fsp.c
--- ../mysql-5.5.8/storage/innobase/fsp/fsp0fsp.c	2010-12-03 09:58:26.000000000 -0800
+++ ./storage/innobase/fsp/fsp0fsp.c	2011-03-22 13:34:28.000000000 -0700
@@ -1179,7 +1179,7 @@
 	ut_a(page_no >= size);
 
 	success = fil_extend_space_to_desired_size(&actual_size, space,
-						   page_no + 1);
+                                                  page_no + srv_tablespace_extra_extend + 1);
 	/* actual_size now has the space size in pages; it may be less than
 	we wanted if we ran out of disk space */
 
diff -ruN ../mysql-5.5.8/storage/innobase/handler/ha_innodb.cc ./storage/innobase/handler/ha_innodb.cc
--- ../mysql-5.5.8/storage/innobase/handler/ha_innodb.cc	2010-12-03 09:58:26.000000000 -0800
+++ ./storage/innobase/handler/ha_innodb.cc	2011-03-22 13:34:28.000000000 -0700
@@ -11194,6 +11194,13 @@
   "trigger a readahead.",
   NULL, NULL, 56, 0, 64, 0);
 
+static MYSQL_SYSVAR_ULONG(tablespace_extra_extend,
+  srv_tablespace_extra_extend,
+  PLUGIN_VAR_RQCMDARG,
+  "Number of extra pages added to tablespace when it needs "
+  "to grow",
+  NULL, NULL, 0, 0, LONG_MAX, 0);
+
 static struct st_mysql_sys_var* innobase_system_variables[]= {
   MYSQL_SYSVAR(additional_mem_pool_size),
   MYSQL_SYSVAR(autoextend_increment),
@@ -11255,6 +11262,7 @@
   MYSQL_SYSVAR(change_buffering_debug),
 #endif /* UNIV_DEBUG || UNIV_IBUF_DEBUG */
   MYSQL_SYSVAR(read_ahead_threshold),
+  MYSQL_SYSVAR(tablespace_extra_extend),
   MYSQL_SYSVAR(io_capacity),
   MYSQL_SYSVAR(purge_threads),
   MYSQL_SYSVAR(purge_batch_size),
diff -ruN ../mysql-5.5.8/storage/innobase/include/srv0srv.h ./storage/innobase/include/srv0srv.h
--- ../mysql-5.5.8/storage/innobase/include/srv0srv.h	2010-12-03 09:58:26.000000000 -0800
+++ ./storage/innobase/include/srv0srv.h	2011-03-22 13:34:28.000000000 -0700
@@ -164,6 +164,7 @@
 extern ulong	srv_read_ahead_threshold;
 extern ulint	srv_n_read_io_threads;
 extern ulint	srv_n_write_io_threads;
+extern ulint  srv_tablespace_extra_extend;
 
 /* Number of IO operations per second the server can do */
 extern ulong    srv_io_capacity;
diff -ruN ../mysql-5.5.8/storage/innobase/srv/srv0srv.c ./storage/innobase/srv/srv0srv.c
--- ../mysql-5.5.8/storage/innobase/srv/srv0srv.c	2010-12-03 09:58:26.000000000 -0800
+++ ./storage/innobase/srv/srv0srv.c	2011-03-22 13:34:28.000000000 -0700
@@ -231,6 +231,7 @@
 in the buffer cache and accessed sequentially for InnoDB to trigger a
 readahead request. */
 UNIV_INTERN ulong	srv_read_ahead_threshold	= 56;
+ulint srv_tablespace_extra_extend = 0;
 
 #ifdef UNIV_LOG_ARCHIVE
 UNIV_INTERN ibool		srv_log_archive_on	= FALSE;