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curd=`pwd`
for size in 320
do
cd /mnt/p320
sysbench --test=fileio --file-num=64 --file-total-size=${size}G prepare
sync
echo 3 > /proc/sys/vm/drop_caches
for numthreads in 1 2 4 8 16 32 64 128 256
do
sysbench --test=fileio --file-total-size=${size}G --file-test-mode=rndrd --max-time=1800 --max-requests=0 --num-threads=$numthreads --rand-init=on --file-num=64 --file-io-mode=sync --file-extra-flags=direct --file-fsync-freq=0 --file-block-size=16384 --report-interval=10 run | tee -a $curd/run$size.thr$numthreads.txt
done
cd $curd
done
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