Pause: temporarily stop processing

atom

@@ -594,11 +594,29 @@ do
 			[qQ])
 				quit=1
 			;;
+			[pP])
+				if (( pause ))
+				then
+					pause=0
+					((
+						pausedtime +=
+							$(date +%s) - pausestart
+					))
+					concurrencychange=$(date +%s)
+				else
+					pause=1
+					pausestart=$(date +%s)
+					(( concurrency = maxload / 2 ))
+					(( concurrency )) || concurrency=1
+				fi
+			;;
 		esac
 	fi
 	read humanload garbage < /proc/loadavg
 	load=${humanload%.*}
-	if [ -z "$quit" ] && (( $(date +%s)-concurrencychange >= loadinterval ))
+	if [ -z "$quit" ]					\
+	&& (( ! pause ))					\
+	&& (( $(date +%s)-concurrencychange >= loadinterval ))
 	then
 		if (( concurrency > 1 ))	\
 		&& (( load > maxload ))
@@ -613,12 +631,18 @@ do
 	fi
 	checkworkers
 	cleaner
-	master
+	(( pause )) || master
 	if (( ran - failed ))
 	then
 		currenttime=$(date +%s)
+		if (( pause ))
+		then
+			(( runtime = pausestart - starttime - pausedtime ))
+		else
+			(( runtime = currenttime - starttime - pausedtime ))
+		fi
 		avgduration=$((
-			((currenttime - starttime) * 1000)
+			( runtime * 1000)
 			/
 			( ran - failed )
 		))
@@ -673,12 +697,21 @@ do
 		${minutes:-0}						\
 		${seconds:-0}   					\
 		${avgdsec:-0}.${avgdmsec:-0}
+	if (( pause ))
+	then
+		if (( active ))
+		then
+			echo -n ' | (pause)'
+		else
+			echo -n ' | PAUSED'
+		fi
+	fi
 done
 unset count
 
 endtime=$(date +%s)
 
-(( elapsedseconds = endtime - starttime ))
+(( elapsedseconds = endtime - starttime - pausedtime ))
 (( days =
 	elapsedseconds
 	/