diff --git a/check_psqlserver b/check_psqlserver
index b161b96745156dbe1e399e47297dce84d8f1fe27..026654bd0a80e2ad873a2787e92b445be36d72cd 100755
--- a/check_psqlserver
+++ b/check_psqlserver
@@ -16,12 +16,13 @@
 # 2023-06-07  v0.2  <axel.hahn@unibe.ch>
 # 2023-06-08  v0.3  <axel.hahn@unibe.ch>  show unknown if database connection fails
 # 2023-06-08  v0.4  <axel.hahn@unibe.ch>  get summary for cronflicts and problems
+# 2023-06-09  v0.5  <axel.hahn@unibe.ch>  deltaunit can be set as parameter
 # ======================================================================
 
 
 . $(dirname $0)/inc_pluginfunctions
 self_APPNAME=$( basename $0 | tr [:lower:] [:upper:] )
-self_APPVERSION=0.2
+self_APPVERSION=0.5
 
 # --- other vars...
 cfgfile=/etc/icingaclient/.psql.conf
@@ -142,13 +143,15 @@ EOH
 # render incremental counters from integer results of a given sql query
 # global string  out  output of check
 # param  string       database query
+# param  string       time unit; one of sec|min; default: sec
 function renderCounters(){
   local _query;      _query="$1"
+  local _sDeltaUnit; _sDeltaUnit=${2:-sec}
+
   local _out;        _out=$( psql -c "${_query} " 2>&1) || _queryFailed
   local _iCounter;   typeset -i _iCounter=0
   local _header;     _header=$( echo "${_out}" | head -1 | tr -d ' ')
   local _data;       _data=$( echo "${_out}" | head -3 | tail -1 | tr -d ' ')
-  local _sDeltaUnit; _sDeltaUnit=sec
   local _iSpeed;     typeset -i _iSpeed=0
   local _sStoreid;   _sStoreid=$( md5sum <<< "${_query}" | awk '{ print $1 }' )
   local _iValue;     typeset -i _iValue
@@ -229,7 +232,11 @@ case "${sMode}" in
         typeset -i iQOther;    iQOther=$iQTotal-$iQActive-$iQIdle-$iQFastpath
 
         descr="Running total: $iQTotal ... active: $iQActive idle: $iQIdle fastpath: $iQFastpath other: $iQOther"
-        out=$( grep "^.[a-z]" <<< "${_out}" | cut -c 1-150 | tr '|' ':' )
+        typeset -i iMax; iMax=20
+        out=$( grep "^.[a-z]" <<< "${_out}" | cut -c 1-150 | tr '|' ':' | head -${iMax} )
+        if [ ${iQTotal} -gt ${iMax} ]; then
+            out+="${NL}(showing ${iMax} of ${iQTotal} lines)${NL}"
+        fi
         ph.perfadd "running-total"     "${iQTotal}"
         ph.perfadd "running-active"    "${iQActive}"
         ph.perfadd "running-idle"      "${iQIdle}"
@@ -238,6 +245,7 @@ case "${sMode}" in
         ;;
 
     "conflicts")
+        deltaunit=min
         descr="Detected conflicts (from pg_stat_database_conflicts)"
         renderCounters "select                              \
             sum(confl_tablespace)  as confl_tablespace,  \
@@ -245,14 +253,14 @@ case "${sMode}" in
             sum(confl_snapshot)    as confl_snapshot,    \
             sum(confl_bufferpin)   as confl_bufferpin,   \
             sum(confl_deadlock)    as confl_deadlock     \
-            from pg_stat_database_conflicts "
+            from pg_stat_database_conflicts " "${deltaunit}"
 
         # sum of 7th column (with delta per sec)
         typeset -i iTotal; iTotal=$( echo "$out" | awk '{ sum+=$7} END { print sum;}' )
         if [ $iTotal -gt 0 ]; then
-                ph.setStatus "warning"
+                ph.setStatus "critical"
         fi
-        descr+=" - currently $iTotal per sec"
+        descr+=" - currently $iTotal per ${deltaunit}"
         ;;
 
     "dbrows")
@@ -275,6 +283,7 @@ case "${sMode}" in
         ;;
 
     "problems")
+        deltaunit=min
         descr="Problems and troublemakers (from pg_stat_database)"
         renderCounters "select                           \
             sum(conflicts)          as conflicts,        \
@@ -282,14 +291,14 @@ case "${sMode}" in
             sum(checksum_failures)  as checksumfailures, \
             sum(temp_files)         as temp_files,       \
             sum(temp_bytes)         as temp_bytes        \
-            from pg_stat_database "
+            from pg_stat_database" "${deltaunit}"
 
         # sum of 7th column (with delta per sec)
         typeset -i iTotal; iTotal=$( echo "$out" | awk '{ sum+=$7} END { print sum;}' )
         if [ $iTotal -gt 0 ]; then
-                ph.setStatus "warning"
+                ph.setStatus "critical"
         fi
-        descr+=" - currently $iTotal per sec"
+        descr+=" - currently $iTotal per ${deltaunit}"
         ;;
 
     "replication")