Commit f4e27ffa authored by Karol Latecki's avatar Karol Latecki Committed by Tomasz Zawadzki
Browse files

test/nvme_perf: add option to enable gtod_reduce 



Optionally enable gtod_reduce for fio workload.
Results in greatly decreased latency metrics, but
improved IOPS/BW.

Change-Id: Ibe70d8e9a13a18a31e55b60b5cec7b353e2862c3
Signed-off-by: default avatarKarol Latecki <karol.latecki@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/3379


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>
Reviewed-by: default avatarPaul Luse <paul.e.luse@intel.com>
parent 0e897f08

test/nvme/perf/common.sh

+4 −0
Original line number Diff line number Diff line
@@ -228,6 +228,10 @@ function create_fio_config() { 
		log_avg_msec=$SAMPLING_INT

	EOF



	if $GTOD_REDUCE; then

		echo "gtod_reduce=1" >> $testdir/config.fio

	fi



	for i in "${!cores[@]}"; do

		local m=0 #Counter of disks per NUMA node

		local n=0 #Counter of all disks in test

test/nvme/perf/run_perf.sh

+3 −0
Original line number Diff line number Diff line
@@ -27,6 +27,7 @@ RUNTIME=600 
RAMP_TIME=30

NUMJOBS=1

REPEAT_NO=3

GTOD_REDUCE=false

SAMPLING_INT=0

FIO_BIN=$CONFIG_FIO_SOURCE_DIR/fio

TMP_RESULT_FILE=$testdir/result.json
@@ -64,6 +65,7 @@ function usage() { 
	echo "                          Applicable only for fio-based tests."

	echo "    --repeat-no=INT       How many times to repeat workload test. [default=$REPEAT_NO]"

	echo "                          Test result will be an average of repeated test runs."

	echo "    --gtod-reduce         Enable fio gtod_reduce option. [default=$GTOD_REDUCE]"

	echo "    --sampling-int=INT    Value for fio log_avg_msec parameters [default=$SAMPLING_INT]"

	echo "    --fio-bin=PATH        Path to fio binary. [default=$FIO_BIN]"

	echo "                          Applicable only for fio-based tests."
@@ -115,6 +117,7 @@ while getopts 'h-:' optchar; do 
				ramp-time=*) RAMP_TIME="${OPTARG#*=}" ;;

				numjobs=*) NUMJOBS="${OPTARG#*=}" ;;

				repeat-no=*) REPEAT_NO="${OPTARG#*=}" ;;

				gtod-reduce) GTOD_REDUCE=true ;;

				sampling-int=*) SAMPLING_INT="${OPTARG#*=}" ;;

				fio-bin=*) FIO_BIN="${OPTARG#*=}" ;;

				driver=*) PLUGIN="${OPTARG#*=}" ;;