Report status of performance relevant governors

README.md

@@ -95,7 +95,7 @@ Provides some insights about cache sizes/speed and memory latency/bandwidth. Stu
 
 ### [cpuminer](https://github.com/tkinjo1985/cpuminer-multi.git)
 
-This is the most demanding benchmark of the four and pretty efficient to check for appropriate heat dissipation and even instabilities under load. It makes heavy use of [SIMD optimizations](https://en.wikipedia.org/wiki/SIMD) (NEON on ARM and SSE on x86) therefore generating more heat than unoptimized 'standard' code.
+This is the most demanding benchmark of the five and pretty efficient to check for appropriate heat dissipation and even instabilities under load. It makes heavy use of [SIMD optimizations](https://en.wikipedia.org/wiki/SIMD) (NEON on ARM and SSE on x86) therefore generating more heat than unoptimized 'standard' code.
 
 Heavy SIMD optimizations aren't really common and therefore this test is optional. Unless you execute `sbc-bench -c` it will be skipped since results can be misleading. So consider this being a load generator to check whether your board will start to throttle or becomes unstable but take the benchmark numbers with a grain of salt unless you're a programmer and know what [NEON](https://en.wikipedia.org/wiki/ARM_architecture#Advanced_SIMD_(NEON)) or [SSE](https://en.wikipedia.org/wiki/Streaming_SIMD_Extensions) really are and whether your application can make use of.
 

Results.md

@@ -35,8 +35,8 @@ So do **not** rely on collected numbers unless you carefully read through all th
 | [Jetson Nano](http://ix.io/3Ufc) | 2000 MHz | 4.9 | Bionic arm64 | 6260 | 376900 | 717500 | 4100 | 11760 | 8.72 |
 | [Jetson Xavier NX](http://ix.io/3YWp) | 1890 MHz | 4.9 | Bionic arm64 | 13230 | 992690 | 706280 | 9190 | 18480 | - |
 | [Kendryte K510](http://ix.io/41Qa) | 790 MHz | 4.17 | Sid riscv64 | 690 | 6750 | 7410 | 280 | 440 | - |
-| [Khadas Edge/Captain](http://ix.io/1rYm) | 2000/1500 MHz | 4.4 | Bionic arm64 | 6550 | 402150 | 1130400 | 2810 | 4860 | 10.50 |
-| [Khadas Edge/Captain](http://ix.io/1uar) | 2000/1500 MHz | 4.4 | Stretch arm64 | 6600 | 269485 | 1127780 | 2860 | 4880 | 8.85 |
+| [Khadas Edge](http://ix.io/1rYm) | 2000/1500 MHz | 4.4 | Bionic arm64 | 6550 | 402150 | 1130400 | 2810 | 4860 | 10.50 |
+| [Khadas Edge](http://ix.io/1uar) | 2000/1500 MHz | 4.4 | Stretch arm64 | 6600 | 269485 | 1127780 | 2860 | 4880 | 8.85 |
 | [Khadas Edge2](http://ix.io/4a5U) | 2260/1800 MHz | 5.10 | Jammy arm64 | 16470 | 641550 | 1287490 | 10860 | 29110 | - |
 | [Khadas VIM1](http://ix.io/3QLN) | 1415 MHz | 5.1 | Buster arm64 | 3860 | 90160 | 659460 | 1930 | 5900 | - |
 | [Khadas VIM1S](http://ix.io/4a2b) | 2000 MHz | 5.4 | Jammy arm64 | 3840 | 103430 | 436670 | 1320 | 4240 | - |

sbc-bench.sh

@@ -149,6 +149,7 @@ Main() {
 	[ -f /sys/devices/system/cpu/cpufreq/policy0/scaling_governor ] && \
 		read OriginalCPUFreqGovernor </sys/devices/system/cpu/cpufreq/policy0/scaling_governor 2>/dev/null
 	BasicSetup performance >/dev/null 2>&1
+	CheckGovernors
 	GetTempSensor
 	[ "X${MODE}" = "Xpts" ] && CheckPTS
 	InstallPrerequisits
@@ -438,6 +439,47 @@ BashBench(){
 	esac
 } # BashBench
 
+CheckGovernors() {
+	# check and report governors that directly affect performance behaviour. Stuff like
+	# memory/GPU/NPU governors. On RK3588 for example:
+	#
+	# Status of performance relevant governors:
+	#                 dmc: dmc_ondemand (dmc_ondemand userspace powersave performance simple_ondemand)
+	#        fb000000.gpu: simple_ondemand (dmc_ondemand userspace powersave performance simple_ondemand)
+	#        fdab0000.npu: userspace (dmc_ondemand userspace powersave performance simple_ondemand)
+
+	Governors="$(find /sys -name "*governor" | grep -E -v '/sys/module|cpuidle|cpufreq/')"
+	if [ "X${Governors}" = "X" ]; then
+		return
+	fi
+	echo -e "Status of performance relevant governors:"
+	echo "${Governors}" | while read ; do
+		read Governor <"${REPLY}"
+		if [ "X${Governor}" != "X" ]; then
+			SysFSNode="$(sed 's/cpufreq\//cpufreq-/' <<<"${REPLY%/*}")"
+			AvailableGovernorsSysFSNode="$(ls -d "${REPLY%/*}"/*available_governors)"
+			if [ -f "${AvailableGovernorsSysFSNode}" ]; then
+				read AvailableGovernors <"${AvailableGovernorsSysFSNode}"
+				if [ "X${AvailableGovernors}" != "X${Governor}" ]; then
+					printf "%19s: %s" "${SysFSNode##*/}"
+					grep -q "performance" <<<"${AvailableGovernors}"
+					GovStatus=$?
+					if [ ${GovStatus} -eq 0 -a "X${Governor}" = "Xperformance" ]; then
+						echo -e "${LGREEN}performance${NC}"
+					elif [ ${GovStatus} -eq 0 -a "X${Governor}" != "Xperformance" ]; then
+						echo -e "${LRED}${Governor}${NC} (${AvailableGovernors})"
+					else
+						echo "${Governor} (${AvailableGovernors})"
+					fi
+				fi
+			else
+				printf "%19s: %s\n" "${SysFSNode##*/}" "${Governor}"
+			fi
+		fi
+	done | sort -n
+	echo ""
+} # CheckGovernors
+
 PlotPerformanceGraph() {
 	# function that walks through all cpufreq OPP and plots a performance graph using
 	# 7-ZIP MIPS. Needs gnuplot and htmldoc (Debian/Ubuntu: gnuplot-nox htmldoc packages)