diff --git a/tests/perftest-scripts/perftest-taosdemo.sh b/tests/perftest-scripts/perftest-taosdemo.sh
index ae9e8dd7371cca2f522810da6d7816adba86a862..dffa251ef76d866f33247bd0ce6fd5bb718449de 100755
--- a/tests/perftest-scripts/perftest-taosdemo.sh
+++ b/tests/perftest-scripts/perftest-taosdemo.sh
@@ -16,6 +16,9 @@ fi
 logDir=`grep "^logDir" /etc/taos/taos.cfg | awk '{print $2}'`
 dataDir=`grep "^dataDir" /etc/taos/taos.cfg | awk '{print $2}'`
 
+[ -z "$logDir" ] && logDir="/var/log/taos"
+[ -z "$dataDir" ] && dataDir="/var/lib/taos"
+
 # Coloured Echoes 
 function red_echo      { echo -e "\033[31m$@\033[0m";   }
 function green_echo    { echo -e "\033[32m$@\033[0m";   }
diff --git a/tests/perftest-scripts/perftest-tsdb-compare-13d.sh b/tests/perftest-scripts/perftest-tsdb-compare-13d.sh
index 110ab9e5fa6463db9f55c8320b1fd3e36380d7a1..3f56a048e9f78b9e6d02bf8f1d704d27d46e1149 100755
--- a/tests/perftest-scripts/perftest-tsdb-compare-13d.sh
+++ b/tests/perftest-scripts/perftest-tsdb-compare-13d.sh
@@ -16,6 +16,9 @@ fi
 logDir=`grep "^logDir" /etc/taos/taos.cfg | awk '{print $2}'`
 dataDir=`grep "^dataDir" /etc/taos/taos.cfg | awk '{print $2}'`
 
+[ -z "$logDir" ] && logDir="/var/log/taos"
+[ -z "$dataDir" ] && dataDir="/var/lib/taos"
+
 # Coloured Echoes                                                                                                       #
 function red_echo      { echo -e "\033[31m$@\033[0m";   }                                                               #
 function green_echo    { echo -e "\033[32m$@\033[0m";   }                                                               #
diff --git a/tests/perftest-scripts/perftest-tsdb-compare-1d.sh b/tests/perftest-scripts/perftest-tsdb-compare-1d.sh
index 9e8bc697bc18e0e5c3a6d5957fed948192c09241..29e72d7b3ff62aa30fdefd694e435335e752e630 100755
--- a/tests/perftest-scripts/perftest-tsdb-compare-1d.sh
+++ b/tests/perftest-scripts/perftest-tsdb-compare-1d.sh
@@ -16,6 +16,9 @@ fi
 logDir=`grep "^logDir" /etc/taos/taos.cfg | awk '{print $2}'`
 dataDir=`grep "^dataDir" /etc/taos/taos.cfg | awk '{print $2}'`
 
+[ -z "$logDir" ] && logDir="/var/log/taos"
+[ -z "$dataDir" ] && dataDir="/var/lib/taos"
+
 # Coloured Echoes                                                                                                       #
 function red_echo      { echo -e "\033[31m$@\033[0m";   }                                                               #
 function green_echo    { echo -e "\033[32m$@\033[0m";   }                                                               #
diff --git a/tests/perftest-scripts/perftest-tsdb-compare-var10k-int100s.sh b/tests/perftest-scripts/perftest-tsdb-compare-var10k-int100s.sh
index 5fc5b9d03a4339263eb07a9af9b76ee2fc324f1b..3bc63b831b901b9a8a4b9b96385574a345ab58c6 100755
--- a/tests/perftest-scripts/perftest-tsdb-compare-var10k-int100s.sh
+++ b/tests/perftest-scripts/perftest-tsdb-compare-var10k-int100s.sh
@@ -16,6 +16,9 @@ fi
 logDir=`grep "^logDir" /etc/taos/taos.cfg | awk '{print $2}'`
 dataDir=`grep "^dataDir" /etc/taos/taos.cfg | awk '{print $2}'`
 
+[ -z "$logDir" ] && logDir="/var/log/taos"
+[ -z "$dataDir" ] && dataDir="/var/lib/taos"
+
 # Coloured Echoes                                                                                                       #
 function red_echo      { echo -e "\033[31m$@\033[0m";   }                                                               #
 function green_echo    { echo -e "\033[32m$@\033[0m";   }                                                               #
diff --git a/tests/perftest-scripts/perftest-tsdb-compare-var10k-int10s.sh b/tests/perftest-scripts/perftest-tsdb-compare-var10k-int10s.sh
index bafa04f174955d9938810f9b5bc353a0b712c3c3..566479c967320e9bbb8a9e877d26e1bbeb750add 100755
--- a/tests/perftest-scripts/perftest-tsdb-compare-var10k-int10s.sh
+++ b/tests/perftest-scripts/perftest-tsdb-compare-var10k-int10s.sh
@@ -16,6 +16,9 @@ fi
 logDir=`grep "^logDir" /etc/taos/taos.cfg | awk '{print $2}'`
 dataDir=`grep "^dataDir" /etc/taos/taos.cfg | awk '{print $2}'`
 
+[ -z "$logDir" ] && logDir="/var/log/taos"
+[ -z "$dataDir" ] && dataDir="/var/lib/taos"
+
 # Coloured Echoes                                                                                                       #
 function red_echo      { echo -e "\033[31m$@\033[0m";   }                                                               #
 function green_echo    { echo -e "\033[32m$@\033[0m";   }                                                               #