fio: (g=0): rw=randrw, bs=4K-256K/4K-256K, ioengine=libaio, iodepth=8 ... fio: (g=0): rw=randrw, bs=4K-256K/4K-256K, ioengine=libaio, iodepth=8 Starting 3 threads Threads: 3 Threads: 3 Threads: 3: [mmm] [10.7% done] [ 15266/ 4924 kb/s] [eta 00m:25s] Threads: 3: [mmm] [16.0% done] [ 14092/ 5820 kb/s] [eta 00m:21s] Threads: 3: [mmm] [20.0% done] [ 8764/ 9176 kb/s] [eta 00m:20s] Threads: 3: [mmm] [23.1% done] [ 11972/ 2904 kb/s] [eta 00m:20s] Threads: 3: [mmm] [26.9% done] [ 16724/ 764 kb/s] [eta 00m:19s] Threads: 3: [mmm] [28.6% done] [ 8480/ 5112 kb/s] [eta 00m:20s] Threads: 3: [mmm] [33.3% done] [ 9604/ 3552 kb/s] [eta 00m:18s] Threads: 3: [mmm] [35.7% done] [ 9608/ 5628 kb/s] [eta 00m:18s] Threads: 3: [mmm] [39.3% done] [ 6528/ 7580 kb/s] [eta 00m:17s] Threads: 3: [mmm] [42.9% done] [ 8924/ 5940 kb/s] [eta 00m:16s] Threads: 3: [mmm] [44.8% done] [ 11520/ 2012 kb/s] [eta 00m:16s] Threads: 3: [mmm] [48.3% done] [ 9596/ 3156 kb/s] [eta 00m:15s] Threads: 3: [mmm] [51.7% done] [ 10592/ 1028 kb/s] [eta 00m:14s] Threads: 3: [mmm] [53.3% done] [ 4764/ 7304 kb/s] [eta 00m:14s] Threads: 3: [mmm] [56.7% done] [ 8276/ 2992 kb/s] [eta 00m:13s] Threads: 3: [mmm] [60.0% done] [ 7372/ 3036 kb/s] [eta 00m:12s] Threads: 3: [mmm] [61.3% done] [ 7612/ 2816 kb/s] [eta 00m:12s] Threads: 3: [mmm] [62.5% done] [ 6112/ 3476 kb/s] [eta 00m:12s] Threads: 3: [mmm] [65.6% done] [ 7168/ 1804 kb/s] [eta 00m:11s] Threads: 3: [VVV] [68.8% done] [ 10500/ 232 kb/s] [eta 00m:10s] Threads: 3: [VVV] [69.7% done] [ 19776/ 0 kb/s] [eta 00m:10s] Threads: 3: [VVV] [75.0% done] [ 20540/ 0 kb/s] [eta 00m:08s] Threads: 3: [VVV] [80.6% done] [ 19932/ 0 kb/s] [eta 00m:06s] Threads: 2: [V_V] [83.9% done] [ 18596/ 0 kb/s] [eta 00m:05s] fio: (groupid=0): err= 0: pid=4100 read : io=100MiB, bw=3,868KiB/s, runt= 27102msec slat (msec): min= 0, max= 5504, avg=951.56, stdev=1615.10 clat (msec): min= 0, max= 831, avg=93.58, stdev=87.17 bw (KiB/s) : min= 30, max= 7976, per=33.37%, avg=3873.09, stdev=2410.68 write: io=29,452KiB, bw=1,398KiB/s, runt= 21570msec slat (msec): min= 0, max= 3, avg= 0.05, stdev= 0.25 clat (msec): min= 0, max= 924, avg=118.69, stdev=157.44 bw (KiB/s) : min= 0, max= 6530, per=50.96%, avg=2286.04, stdev=2044.45 cpu : usr=3.54%, sys=0.25%, ctx=1749 IO depths : 1=0.1%, 2=0.2%, 4=11.9%, 8=87.8%, 16=0.0%, 32=0.0%, >=64=0.0% lat (msec): 2=0.9%, 4=0.7%, 10=4.1%, 20=13.2%, 50=23.6%, 100=21.5% lat (msec): 250=28.8%, 500=5.9%, 750=0.7%, 1000=0.4%, >=2000=0.0% fio: (groupid=0): err= 0: pid=4101 read : io=100MiB, bw=4,034KiB/s, runt= 25990msec slat (msec): min= 0, max= 5468, avg=631.79, stdev=1350.70 clat (msec): min= 4, max= 502, avg=89.71, stdev=73.81 bw (KiB/s) : min= 8, max=11885, per=38.42%, avg=4458.65, stdev=2759.00 write: io=28,288KiB, bw=1,405KiB/s, runt= 20605msec slat (msec): min= 0, max= 3, avg= 0.10, stdev= 0.39 clat (msec): min= 0, max= 630, avg=131.45, stdev=108.39 bw (KiB/s) : min= 0, max=10014, per=69.66%, avg=3124.81, stdev=2721.74 cpu : usr=3.49%, sys=0.26%, ctx=1772 IO depths : 1=0.1%, 2=0.2%, 4=9.0%, 8=90.7%, 16=0.0%, 32=0.0%, >=64=0.0% lat (msec): 2=0.7%, 4=0.0%, 10=1.6%, 20=7.7%, 50=22.9%, 100=29.7% lat (msec): 250=31.2%, 500=5.8%, 750=0.2%, 1000=0.0%, >=2000=0.0% fio: (groupid=0): err= 0: pid=4102 read : io=100MiB, bw=3,879KiB/s, runt= 27031msec slat (msec): min= 0, max= 5143, avg=1175.89, stdev=1749.22 clat (msec): min= 1, max= 508, avg=81.57, stdev=74.93 bw (KiB/s) : min= 39, max=13128, per=37.69%, avg=4373.95, stdev=3010.86 write: io=38,284KiB, bw=1,788KiB/s, runt= 21918msec slat (msec): min= 0, max= 7, avg= 0.09, stdev= 0.52 clat (msec): min= 0, max= 821, avg=114.53, stdev=133.38 bw (KiB/s) : min= 0, max= 7161, per=50.88%, avg=2282.41, stdev=1949.47 cpu : usr=3.60%, sys=0.33%, ctx=1860 IO depths : 1=0.1%, 2=0.3%, 4=14.9%, 8=84.7%, 16=0.0%, 32=0.0%, >=64=0.0% lat (msec): 2=1.3%, 4=0.6%, 10=4.1%, 20=12.8%, 50=24.4%, 100=23.0% lat (msec): 250=27.8%, 500=5.0%, 750=0.8%, 1000=0.1%, >=2000=0.0% Run status group 0 (all jobs): READ: io=300MiB, aggrb=11,606KiB/s, minb=3,868KiB/s, maxb=4,034KiB/s, mint=25990msec, maxt=27102msec WRITE: io=96,024KiB, aggrb=4,486KiB/s, minb=1,398KiB/s, maxb=1,788KiB/s, mint=25990msec, maxt=27102msec Disk stats (read/write): sda: ios=5084/1586, merge=1208/353, ticks=463716/214780, in_queue=678540, util=98.97% 2.88user 0.30system 0:27.53elapsed 11%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+2381minor)pagefaults 0swaps