Commit be186f64 authored by Ben Walker's avatar Ben Walker Committed by Daniel Verkamp
Browse files

fio: Add a script to prep a system for benchmarks 



Also update the example fio file

Change-Id: I2a9074d524072e95340cc0e87041e87e3bb7d4f8
Signed-off-by: default avatarBen Walker <benjamin.walker@intel.com>
Reviewed-on: https://review.gerrithub.io/362069


Tested-by: default avatarSPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: default avatarDaniel Verkamp <daniel.verkamp@intel.com>
Reviewed-by: default avatarJim Harris <james.r.harris@intel.com>
parent dc772e54

examples/nvme/fio_plugin/full_bench.fio

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Original line number Diff line number Diff line 
[global]

ioengine=./examples/nvme/fio_plugin/fio_plugin

thread=1

group_reporting=1

direct=1

verify=0

norandommap=1

cpumask=1

percentile_list=50:99:99.9:99.99:99.999



[precondition-trim]

description="Trim the entire device"

rw=trim

iodepth=128

bs=1M



[precondition-sequential]

stonewall

description="Sequentially write to the device twice"

rw=write

iodepth=128

bs=128k

loops=2



[4k_randwrite_qd1]

stonewall

description="4KiB Random Write QD=1"

bs=4k

rw=randwrite

iodepth=1

time_based=1

ramp_time=60

runtime=240



[4k_randread_qd1]

stonewall

description="4KiB Random Read QD=1"

bs=4k

rw=randread

iodepth=1

time_based=1

ramp_time=60

runtime=240

scripts/prep_benchmarks.sh

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#!/usr/bin/env bash



echo -n "Placing all CPUs in performance mode..."

for governor in /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor; do

	echo -n performance > $governor

done

echo "Done"



echo -n "Disabling irqbalance service..."

service irqbalance stop 2> /dev/null

echo "Done"



echo -n "Moving all interrupts off of core 0..."

count=`expr $(nproc) / 4`

cpumask="e"

for ((i=1; i<$count; i++)); do

	if [ `expr $i % 8` -eq 0 ]; then

		cpumask=",$cpumask"

	fi

	cpumask="f$cpumask"

done

for file in /proc/irq/*/smp_affinity; do

	echo "$cpumask" > $file 2> /dev/null

done

echo "Done"



echo -n "Configuring kernel blk-mq for for NVMe SSDs..."

for queue in /sys/block/nvme*n*/queue; do

	if [ -f "$queue/nomerges" ]; then

		echo "1" > $queue/nomerges

	fi



	if [ -f "$queue/io_poll" ]; then

		echo "1" > $queue/io_poll

	fi



	if [ -f "$queue/io_poll_delay" ]; then

		echo "-1" > $queue/io_poll_delay

	fi

done

echo "Done"