cubefs/docs/source/evaluation/meta.md

MetaData performance evaluation

The results of metadata performance testing through mdtest are as follows:

tool settings

#!/bin/bash
TEST_PATH=/mnt/cfs/mdtest # mount point of CubeFS volume
for CLIENTS in 1 2 4 8 # number of clients
do
mpirun --allow-run-as-root -np $CLIENTS --hostfile hfile01 mdtest -n 5000 -u -z 2 -i 3 -d $TEST_PATH;
done

Directory Creation

	1 Process	4 Processes	16 Processes	64 Processes
1 Client	769.908	3630.337	12777.619	20629.592
2 Clients	1713.038	7259.282	24064.052	36769.599
4 Clients	3723.993	14002.366	42976.837	61513.648
8 Clients	6681.783	23946.143	64191.38	93729.222

Directory Removal

	1 Process	4 Processes	16 Processes	64 Processes
1 Client	853.995	4012.404	15238.647	42028.845
2 Clients	1906.261	7967.688	28410.308	62338.506
4 Clients	3942.590	15601.799	46741.945	87411.655
8 Clients	7072.080	25183.092	69054.923	79459.091

Directory Status Check

	1 Process	4 Processes	16 Processes	64 Processes
1 Client	462527.445	1736760.332	6194206.768	15509755.836
2 Clients	885454.335	3414538.352	12263175.104	24951003.498
4 Clients	1727030.782	6874284.765	24371306.250	10412238.894
8 Clients	1897588.214	7499219.744	25927923.646	4264896.279

File Creation

	1 Process	4 Processes	16 Processes	64 Processes
1 Client	706.453	3306.270	9647.176	10879.290
2 Clients	1601.891	6601.522	19181.965	20756.693
4 Clients	3369.911	13165.056	36158.061	41817.753
8 Clients	6312.911	22560.687	55801.062	76157.675

File Removal

	1 Process	4 Processes	16 Processes	64 Processes
1 Client	1220.322	4606.340	11715.457	23653.043
2 Clients	2360.133	8971.361	22097.206	41579.985
4 Clients	4547.021	17242.900	34965.471	61726.902
8 Clients	8809.381	20379.839	55363.389	71101.736

Tree Creation

	1 Process	4 Processes	16 Processes	64 Processes
1 Client	734.383	379.403	146.070	37.811
2 Clients	648.938	432.150	148.921	30.699
4 Clients	756.639	394.733	123.722	23.998
8 Clients	607.547	263.439	124.911	7.510

Tree Removal

	1 Process	4 Processes	16 Processes	64 Processes
1 Client	552.706	83.197	23.823	5.747
2 Clients	448.557	84.633	24.037	5.137
4 Clients	453.520	85.636	23.490	5.233
8 Clients	429.920	83.449	23.777	1.667