1 files changed, 46 insertions, 11 deletions
diff --git a/mysql-test/t/variables-big.test b/mysql-test/t/variables-big.test
index 43326f3d016..fdb11ffa907 100644
--- a/mysql-test/t/variables-big.test
+++ b/mysql-test/t/variables-big.test
@@ -5,16 +5,51 @@
 --source include/big_test.inc
 
 #
-# Bug #27322  	failure to allocate transaction_prealloc_size causes crash
+# Bug#27322 failure to allocate transaction_prealloc_size causes crash
 #
+#
+# Manual (6.0):
+# Platform Bit Size  Range                      Default
+# 32                 1024-4294967295 (4 Gi - 1) 4096
+# 64                 1024-18446744073709547520  4096
+#
+# Observation(mleich):
+# 1. - Linux 64 Bit, MySQL 64 Bit, 4 GiB RAM, 8 GiB swap
+#    - SET SESSION transaction_prealloc_size=1099511627776;
+#      SHOW PROCESSLIST;
+#      Id   User ... Info
+#      <Id> root ... SHOW PROCESSLIST
+#      SELECT @@session.transaction_prealloc_size;
+#      @@session.transaction_prealloc_size
+#      1099511627776
+#      very short runtime in 5.0
+#      excessive resource consumption + long runtime in 5.1 and 6.0
+# 2. - Win in VM, slightly older version of this test, MySQL 5.0
+#    - testcase timeout after 900s
+#      analyze-timeout-mysqld.1.err :
+#      Id User ... Time Info
+#      83 root ... 542  set session transaction_prealloc_size=1024*1024*1024*2
+#      84 root ... 1    SHOW PROCESSLIST
+#
+# There is a significant probablitity that this tests fails with testcase
+# timeout if the testing box is not powerful enough.
+#
+
+--disable_warnings
+SET SESSION transaction_prealloc_size=1024*1024*1024*1;
+--replace_column 1 <Id> 6 <Time>
+SHOW PROCESSLIST;
+SET SESSION transaction_prealloc_size=1024*1024*1024*2;
+--replace_column 1 <Id> 6 <Time>
+SHOW PROCESSLIST;
+SET SESSION transaction_prealloc_size=1024*1024*1024*3;
+--replace_column 1 <Id> 6 <Time>
+SHOW PROCESSLIST;
+SET SESSION transaction_prealloc_size=1024*1024*1024*4;
+--replace_column 1 <Id> 6 <Time>
+SHOW PROCESSLIST;
+SET SESSION transaction_prealloc_size=1024*1024*1024*5;
+--replace_column 1 <Id> 6 <Time>
+SHOW PROCESSLIST;
+--enable_warnings
 
-set session transaction_prealloc_size=1024*1024*1024*1;
-show processlist;
-set session transaction_prealloc_size=1024*1024*1024*2;
-show processlist;
-set session transaction_prealloc_size=1024*1024*1024*3;
-show processlist;
-set session transaction_prealloc_size=1024*1024*1024*4;
-show processlist;
-set session transaction_prealloc_size=1024*1024*1024*5;
-show processlist;