sysbench oltp test， the result is not stable after warmup, why? the percona server version is 5.6.72.0
The web server contain six SAS SSD components rain0 and skylake 6148 cpu. The sysbench and the mysql running on the same test server without network.
the result as follows:
[ 10s ] thds: 512 tps: 7870.08 qps: 93302.94 (r/w/o: 77562.78/0.00/15740.16) lat (ms,95%): 419.45 err/s: 0.00 reconn/s: 0.00
[ 11s ] thds: 512 tps: 4180.63 qps: 52614.39 (r/w/o: 44259.12/0.00/8355.27) lat (ms,95%): 612.21 err/s: 0.00 reconn/s: 0.00
[ 12s ] thds: 512 tps: 8101.77 qps: 94833.97 (r/w/o: 78624.43/0.00/16209.53) lat (ms,95%): 350.33 err/s: 0.00 reconn/s: 0.00
[ 13s ] thds: 512 tps: 13983.45 qps: 168006.41 (r/w/o: 140056.50/0.00/27949.91) lat (ms,95%): 350.33 err/s: 0.00 reconn/s: 0.00
[ 14s ] thds: 512 tps: 13399.33 qps: 161905.13 (r/w/o: 135094.46/0.00/26810.67) lat (ms,95%): 272.27 err/s: 0.00 reconn/s: 0.00
[ 15s ] thds: 512 tps: 12315.15 qps: 148360.79 (r/w/o: 123729.49/0.00/24631.30) lat (ms,95%): 303.33 err/s: 0.00 reconn/s: 0.00
[ 16s ] thds: 512 tps: 12576.80 qps: 150247.51 (r/w/o: 125095.92/0.00/25151.59) lat (ms,95%): 356.70 err/s: 0.00 reconn/s: 0.00
[ 17s ] thds: 512 tps: 12797.16 qps: 153070.97 (r/w/o: 127473.64/0.00/25597.33) lat (ms,95%): 267.41 err/s: 0.00 reconn/s: 0.00
[ 18s ] thds: 512 tps: 13744.20 qps: 164169.59 (r/w/o: 136679.19/0.00/27490.40) lat (ms,95%): 253.35 err/s: 0.00 reconn/s: 0.00
[ 19s ] thds: 512 tps: 16678.12 qps: 200859.48 (r/w/o: 167510.26/0.00/33349.22) lat (ms,95%): 200.47 err/s: 0.00 reconn/s: 0.00
[ 20s ] thds: 512 tps: 16123.87 qps: 194703.33 (r/w/o: 162451.58/0.00/32251.75) lat (ms,95%): 200.47 err/s: 0.00 reconn/s: 0.00
[ 21s ] thds: 512 tps: 22376.98 qps: 267219.60 (r/w/o: 222468.65/0.00/44750.95) lat (ms,95%): 106.75 err/s: 0.00 reconn/s: 0.00
[ 22s ] thds: 512 tps: 16975.70 qps: 204501.41 (r/w/o: 170548.01/0.00/33953.40) lat (ms,95%): 235.74 err/s: 0.00 reconn/s: 0.00
[ 23s ] thds: 512 tps: 21213.61 qps: 253174.50 (r/w/o: 210753.27/0.00/42421.22) lat (ms,95%): 150.29 err/s: 0.00 reconn/s: 0.00
[ 24s ] thds: 512 tps: 21910.05 qps: 263368.23 (r/w/o: 219542.14/0.00/43826.09) lat (ms,95%): 123.28 err/s: 0.00 reconn/s: 0.00
[ 25s ] thds: 512 tps: 20890.00 qps: 250583.98 (r/w/o: 208811.98/0.00/41772.00) lat (ms,95%): 87.56 err/s: 0.00 reconn/s: 0.00
[ 26s ] thds: 512 tps: 19757.88 qps: 237119.56 (r/w/o: 197605.80/0.00/39513.76) lat (ms,95%): 223.34 err/s: 0.00 reconn/s: 0.00
[ 27s ] thds: 512 tps: 20515.91 qps: 247449.97 (r/w/o: 206419.14/0.00/41030.83) lat (ms,95%): 132.49 err/s: 0.00 reconn/s: 0.00
[ 28s ] thds: 512 tps: 19015.10 qps: 228600.20 (r/w/o: 190554.00/0.00/38046.20) lat (ms,95%): 121.08 err/s: 0.00 reconn/s: 0.00
[ 29s ] thds: 512 tps: 22544.96 qps: 269117.43 (r/w/o: 224032.50/0.00/45084.92) lat (ms,95%): 80.03 err/s: 0.00 reconn/s: 0.00
[ 30s ] thds: 512 tps: 14652.87 qps: 174997.53 (r/w/o: 145688.78/0.00/29308.74) lat (ms,95%): 272.27 err/s: 0.00 reconn/s: 0.00
[ 31s ] thds: 512 tps: 21926.79 qps: 265331.42 (r/w/o: 221481.85/0.00/43849.57) lat (ms,95%): 137.35 err/s: 0.00 reconn/s: 0.00
[ 32s ] thds: 512 tps: 17877.25 qps: 212400.99 (r/w/o: 176645.49/0.00/35755.50) lat (ms,95%): 104.84 err/s: 0.00 reconn/s: 0.00
[ 33s ] thds: 512 tps: 19392.02 qps: 233038.26 (r/w/o: 194255.22/0.00/38783.04) lat (ms,95%): 82.96 err/s: 0.00 reconn/s: 0.00
[ 34s ] thds: 512 tps: 14502.95 qps: 173756.43 (r/w/o: 144759.52/0.00/28996.90) lat (ms,95%): 186.54 err/s: 0.00 reconn/s: 0.00
[ 35s ] thds: 512 tps: 12737.06 qps: 152751.67 (r/w/o: 127266.55/0.00/25485.11) lat (ms,95%): 189.93 err/s: 0.00 reconn/s: 0.00
[ 36s ] thds: 512 tps: 19127.54 qps: 229574.50 (r/w/o: 191315.42/0.00/38259.08) lat (ms,95%): 69.29 err/s: 0.00 reconn/s: 0.00
[ 37s ] thds: 512 tps: 16878.04 qps: 203496.52 (r/w/o: 169756.44/0.00/33740.08) lat (ms,95%): 86.00 err/s: 0.00 reconn/s: 0.00
[ 38s ] thds: 512 tps: 17519.73 qps: 210348.70 (r/w/o: 175309.25/0.00/35039.45) lat (ms,95%): 134.90 err/s: 0.00 reconn/s: 0.00
[ 39s ] thds: 512 tps: 27179.98 qps: 325507.71 (r/w/o: 271146.75/0.00/54360.96) lat (ms,95%): 86.00 err/s: 0.00 reconn/s: 0.00
[ 40s ] thds: 512 tps: 18088.48 qps: 216161.83 (r/w/o: 180056.86/0.00/36104.97) lat (ms,95%): 176.73 err/s: 0.00 reconn/s: 0.00
[ 41s ] thds: 512 tps: 19392.64 qps: 233441.72 (r/w/o: 194586.43/0.00/38855.29) lat (ms,95%): 142.39 err/s: 0.00 reconn/s: 0.00
[ 42s ] thds: 512 tps: 17969.93 qps: 217194.28 (r/w/o: 181245.42/0.00/35948.87) lat (ms,95%): 137.35 err/s: 0.00 reconn/s: 0.00
[ 43s ] thds: 512 tps: 23128.87 qps: 275613.49 (r/w/o: 229348.76/0.00/46264.73) lat (ms,95%): 139.85 err/s: 0.00 reconn/s: 0.00
[ 44s ] thds: 512 tps: 19598.74 qps: 235426.92 (r/w/o: 196230.44/0.00/39196.48) lat (ms,95%): 173.58 err/s: 0.00 reconn/s: 0.00
[ 45s ] thds: 512 tps: 23489.88 qps: 281750.59 (r/w/o: 234768.82/0.00/46981.76) lat (ms,95%): 69.29 err/s: 0.00 reconn/s: 0.00
[ 46s ] thds: 512 tps: 24634.40 qps: 296722.78 (r/w/o: 247459.97/0.00/49262.81) lat (ms,95%): 92.42 err/s: 0.00 reconn/s: 0.00
[ 47s ] thds: 512 tps: 12979.14 qps: 154556.76 (r/w/o: 128593.48/0.00/25963.28) lat (ms,95%): 277.21 err/s: 0.00 reconn/s: 0.00
[ 48s ] thds: 512 tps: 23596.62 qps: 283295.48 (r/w/o: 236115.24/0.00/47180.25) lat (ms,95%): 33.72 err/s: 0.00 reconn/s: 0.00
[ 49s ] thds: 512 tps: 17863.76 qps: 216710.26 (r/w/o: 180968.74/0.00/35741.51) lat (ms,95%): 102.97 err/s: 0.00 reconn/s: 0.00
[ 50s ] thds: 512 tps: 20663.68 qps: 247828.98 (r/w/o: 206507.63/0.00/41321.35) lat (ms,95%): 179.94 err/s: 0.00 reconn/s: 0.00
[ 51s ] thds: 512 tps: 25106.64 qps: 298987.67 (r/w/o: 248782.38/0.00/50205.29) lat (ms,95%): 86.00 err/s: 0.00 reconn/s: 0.00
[ 52s ] thds: 512 tps: 18415.71 qps: 221633.63 (r/w/o: 184791.20/0.00/36842.43) lat (ms,95%): 193.38 err/s: 0.00 reconn/s: 0.00
[ 53s ] thds: 512 tps: 20114.85 qps: 240799.13 (r/w/o: 200566.43/0.00/40232.70) lat (ms,95%): 189.93 err/s: 0.00 reconn/s: 0.00
[ 54s ] thds: 512 tps: 23581.09 qps: 283236.81 (r/w/o: 236097.60/0.00/47139.21) lat (ms,95%): 44.98 err/s: 0.00 reconn/s: 0.00
[ 55s ] thds: 512 tps: 23583.78 qps: 282846.97 (r/w/o: 235658.35/0.00/47188.62) lat (ms,95%): 66.84 err/s: 0.00 reconn/s: 0.00
[ 56s ] thds: 512 tps: 16016.89 qps: 192156.71 (r/w/o: 160122.93/0.00/32033.79) lat (ms,95%): 97.55 err/s: 0.00 reconn/s: 0.00
[ 57s ] thds: 512 tps: 25683.53 qps: 309178.42 (r/w/o: 257811.36/0.00/51367.06) lat (ms,95%): 118.92 err/s: 0.00 reconn/s: 0.00
[ 58s ] thds: 512 tps: 23911.79 qps: 286929.45 (r/w/o: 239110.88/0.00/47818.58) lat (ms,95%): 97.55 err/s: 0.00 reconn/s: 0.00