+# The following variables can be set in the environment, or on the
+# command line
+# result file prefix (date/time + hostname makes unique)
+# NB ensure path to it exists
+rslt_loc=${rslt_loc:-"/tmp"}
+rslt=${rslt:-"$rslt_loc/obdfilter_survey_`date +%F@%R`_`uname -n`"}
+
+# Set this true to check file contents
+verify=${verify:-0}
+
+# total size (MBytes) per obd instance
+# large enough to avoid cache effects
+# and to make test startup/shutdown overhead insignificant
+size=${size:-16384}
+
+# record size (KBytes)
+rszlo=${rszlo:-1024}
+rszhi=${rszhi:-1024}
+
+# number of objects per OST
+nobjlo=${nobjlo:-1}
+#was nobjhi=${nobjhi:-512}
+nobjhi=${nobjhi:-16}
+
+# threads per OST (1024 max)
+thrlo=${thrlo:-1}
+thrhi=${thrhi:-16}
+
+# End of variables
+