Commit 0e897f08 authored by Karol Latecki's avatar Karol Latecki Committed by Tomasz Zawadzki
Browse files

test/nvme_perf: add option to set cpu frequency 



If intel_pstate is disabled in boot options, allow to
change CPU frequency using "userspace" cpu governor.

Change-Id: I390492c7be28df408f3cbb774ba5360859649fe0
Signed-off-by: default avatarKarol Latecki <karol.latecki@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/3376


Community-CI: Mellanox Build Bot
Tested-by: default avatarSPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: default avatarJim Harris <james.r.harris@intel.com>
Reviewed-by: default avatarShuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: default avatarTomasz Zawadzki <tomasz.zawadzki@intel.com>
parent 88b99176

test/nvme/perf/run_perf.sh

+20 −0
Original line number Diff line number Diff line
@@ -38,6 +38,7 @@ DISKNO="ALL" 
CPUS_ALLOWED=1

NOIOSCALING=false

PRECONDITIONING=true

CPUFREQ=""

PERFTOP=false

DATE="$(date +'%m_%d_%Y_%H%M%S')"
@@ -89,6 +90,9 @@ function usage() { 
	echo "                            Can also point to a file containing list of CPUs. [default=$CPUS_ALLOWED]"

	echo "    --no-preconditioning    Skip preconditioning"

	echo "    --no-io-scaling         Do not scale iodepth for each device in SPDK fio plugin. [default=$NOIOSCALING]"

	echo "    --cpu-frequency=INT     Run tests with CPUs set to a desired frequency. 'intel_pstate=disable' must be set in"

	echo "                            GRUB options. You can use 'cpupower frequency-info' and 'cpupower frequency-set' to"

	echo "                            check list of available frequencies. Example: --cpu-frequency=1100000."

	echo

	echo "Other options:"

	echo "    --perftop           Run perftop measurements on the same CPU cores as specified in --cpu-allowed option."
@@ -132,6 +136,7 @@ while getopts 'h-:' optchar; do 
					;;

				no-preconditioning) PRECONDITIONING=false ;;

				no-io-scaling) NOIOSCALING=true ;;

				cpu-frequency=*) CPUFREQ="${OPTARG#*=}" ;;

				perftop) PERFTOP=true ;;

				*)

					usage $0 echo "Invalid argument '$OPTARG'"
@@ -215,6 +220,17 @@ if [[ "$PLUGIN" =~ "kernel" ]]; then 
	fi

fi



if [[ -n "$CPUFREQ" ]]; then

	if [[ ! "$(cat /proc/cmdline)" =~ "intel_pstate=disable" ]]; then

		echo "ERROR: Cannot set custom CPU frequency for test. intel_pstate=disable not in boot options."

		false

	else

		cpu_governor="$(cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor)"

		cpupower frequency-set -g userspace

		cpupower frequency-set -f $CPUFREQ

	fi

fi



if $PERFTOP; then

	echo "INFO: starting perf record on cores $CPUS_ALLOWED"

	perf record -C $CPUS_ALLOWED -o "$testdir/perf.data" &
@@ -311,6 +327,10 @@ fi 
printf "%s,%s,%s,%s,%s,%s,%s,%s,%s\n" ${DISKNO} ${iops_disks} ${mean_lat_disks_usec} ${p99_lat_disks_usec} \

	${p99_99_lat_disks_usec} ${stdev_disks_usec} ${mean_slat_disks_usec} ${mean_clat_disks_usec} ${bw} >> $result_file



if [[ -n "$CPUFREQ" ]]; then

	cpupower frequency-set -g $cpu_governor

fi



if [ $PLUGIN = "kernel-io-uring" ]; then

	# Reload the nvme driver so that other test runs are not affected

	modprobe -rv nvme