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alwaysR9/dd_test.sh

Last active January 19, 2020 15:45
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test disk io with two read process
Raw
dd_test.sh
echo 1 > /proc/sys/vm/drop_caches
#dd if=data/cache.block.1 bs=4096k count=3000000 of=/dev/null iflag=direct &
#dd if=data/cache.block.2 bs=4096k count=3000000 of=/dev/null iflag=direct &
dd if=data/cache.block.1 bs=4096k count=3000000 of=/dev/null &
dd if=data/cache.block.2 bs=4096k count=3000000 of=/dev/null &
Raw
fio_test.sh
echo 1 > /proc/sys/vm/drop_caches
fio -filename=data/cache.block.1 -direct=0 -iodepth 1 -rw=read -ioengine=psync -bs=16M -size=30G -numjobs=1 -runtime=1000 -group_reporting -name=fio_1 &
fio -filename=data/cache.block.2 -direct=0 -iodepth 1 -rw=read -ioengine=psync -bs=16M -size=30G -numjobs=1 -runtime=1000 -group_reporting -name=fio_2 &
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