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go/neo/t/neotest

@@ -403,33 +403,83 @@ header() {
 	echo -n "# "; uname -a
 
 	# cpu
-	# XXX review and read about CPU idle states more	XXX
-	# XXX +power consumption
 	# XXX show C states usage diff after each benchmark	XXX + same for P-states
 	# XXX +cpufreq transition statistics (CPU_FREQ_STAT)
 	echo -n "# cpu: "; grep "^model name" /proc/cpuinfo |head -1 |sed -e 's/model name\s*: //'
 	syscpu=/sys/devices/system/cpu
 	sysidle=$syscpu/cpuidle
-	ls -vd $syscpu/cpu[0-9]* | \
+
+	freqcpuv=()	# [] of cpu
+	freqstr=""	# text about cpufreq for cpus in ^^^
+	freqdump() {
+		test "${#freqcpuv[@]}" = 0 && return
+		echo "# ${freqcpuv[*]}: $freqstr"
+		freqcpuv=()
+		freqstr=""
+	}
+
+	# ----//---- for cpuidle
+	idlecpuv=()
+	idlestr=""
+	idledump() {
+		test "${#idlecpuv[@]}" = 0 && return
+		echo "# ${idlecpuv[*]}: $idlestr"
+		idlecpuv=()
+		idlestr=""
+	}
+
 	while read cpu; do
-		# XXX deduplicate cpu info - if it is the same as prev - print "----//----"
 		cpuname=`basename $cpu`
 		f="$cpu/cpufreq"
-		echo "# $cpuname:"
-		echo -e "#\tfreq: `cat $f/scaling_driver`/`cat $f/scaling_governor` [`fkghz $f/scaling_min_freq` - `fkghz $f/scaling_max_freq`]"
-		#echo -e "#\tenergy: `cat $f/energy_performance_preference`"
-		echo -en "#\tidle: `cat $sysidle/current_driver`/`cat $sysidle/current_governor_ro`:"
-		ls -vd $cpu/cpuidle/state[0-9]* | \
+		fs="freq: `cat $f/scaling_driver`/`cat $f/scaling_governor` [`fkghz $f/scaling_min_freq` - `fkghz $f/scaling_max_freq`]"
+		if [ "$fs" != "$freqstr" ]; then
+			freqdump
+			freqstr="$fs"
+		fi
+		freqcpuv+=($cpuname)
+
+		is="idle: `cat $sysidle/current_driver`/`cat $sysidle/current_governor_ro`:"
 		while read state; do
-			# XXX add target residency? (clarify about its meaning)
-			echo -n " "
-			test "`cat $state/disable`" = "1" && echo -n "!"
-			echo -n "`cat $state/name`(`cat $state/latency`μs)"
-		done
-		echo
-		# XXX warn if freq != stable
-		# XXX warn if idle latency is too much
-	done
+			# XXX add target residency?
+			is+=" "
+			test "`cat $state/disable`" = "1" && is+="!"
+			is+="`cat $state/name`(`cat $state/latency`μs)"
+		done \
+		< <(ls -vd $cpu/cpuidle/state[0-9]*)
+
+		if [ "$is" != "$idlestr" ]; then
+			idledump
+			idlestr="$is"
+		fi
+		idlecpuv+=($cpuname)
+	done \
+	< <(ls -vd $syscpu/cpu[0-9]*)
+
+	freqdump
+	idledump
+
+	#echo
+	#ls -vd $syscpu/cpu[0-9]* | \
+	#while read cpu; do
+	#	# XXX deduplicate cpu info - if it is the same as prev - print "----//----"
+	#	cpuname=`basename $cpu`
+	#	f="$cpu/cpufreq"
+	#	echo -n "# $cpuname: "
+	#	echo -e "freq: `cat $f/scaling_driver`/`cat $f/scaling_governor` [`fkghz $f/scaling_min_freq` - `fkghz $f/scaling_max_freq`]"
+	#	#echo -e "#\tenergy: `cat $f/energy_performance_preference`"
+	#	echo -n "# $cpuname: "
+	#	echo -en "idle: `cat $sysidle/current_driver`/`cat $sysidle/current_governor_ro`:"
+	#	ls -vd $cpu/cpuidle/state[0-9]* | \
+	#	while read state; do
+	#		# XXX add target residency?
+	#		echo -n " "
+	#		test "`cat $state/disable`" = "1" && echo -n "!"
+	#		echo -n "`cat $state/name`(`cat $state/latency`μs)"
+	#	done
+	#	echo
+	#	# XXX warn if freq != stable
+	#	# XXX warn if idle latency is too much
+	#done
 
 	# disk under .
 	mntpt=`stat -c '%m' .`				# mountpoint of current filesystem