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] [11.5% done] [ 17500/ 1668 kb/s] [eta 00m:23s] Threads: 3: [mmm] [15.4% done] [ 16064/ 4100 kb/s] [eta 00m:22s] Threads: 3: [mmm] [20.0% done] [ 13852/ 4680 kb/s] [eta 00m:20s] Threads: 3: [mmm] [24.0% done] [ 11376/ 6060 kb/s] [eta 00m:19s] Threads: 3: [mmm] [28.0% done] [ 8532/ 5644 kb/s] [eta 00m:18s] Threads: 3: [mmm] [30.8% done] [ 11748/ 2232 kb/s] [eta 00m:18s] Threads: 3: [mmm] [33.3% done] [ 12716/ 2584 kb/s] [eta 00m:18s] Threads: 3: [mmm] [37.0% done] [ 15304/ 248 kb/s] [eta 00m:17s] Threads: 3: [mmm] [40.7% done] [ 13824/ 2904 kb/s] [eta 00m:16s] Threads: 3: [mmm] [44.4% done] [ 11632/ 2360 kb/s] [eta 00m:15s] Threads: 3: [mmm] [46.4% done] [ 13244/ 0 kb/s] [eta 00m:15s] Threads: 3: [mmm] [50.0% done] [ 10736/ 3244 kb/s] [eta 00m:14s] Threads: 3: [mmm] [51.7% done] [ 9032/ 3576 kb/s] [eta 00m:14s] Threads: 3: [mmm] [55.2% done] [ 10632/ 312 kb/s] [eta 00m:13s] Threads: 3: [mmm] [56.7% done] [ 7472/ 4220 kb/s] [eta 00m:13s] Threads: 3: [mmm] [60.0% done] [ 8280/ 1588 kb/s] [eta 00m:12s] Threads: 3: [mmm] [61.3% done] [ 3796/ 6136 kb/s] [eta 00m:12s] Threads: 3: [mVm] [62.5% done] [ 4588/ 5248 kb/s] [eta 00m:12s] Threads: 3: [mVm] [63.6% done] [ 14592/ 1492 kb/s] [eta 00m:12s] Threads: 3: [mVm] [64.7% done] [ 11472/ 908 kb/s] [eta 00m:12s] Threads: 2: [m_m] [67.6% done] [ 8844/ 1540 kb/s] [eta 00m:11s] Threads: 2: [V_V] [70.6% done] [ 15864/ 20 kb/s] [eta 00m:10s] Threads: 2: [V_V] [78.1% done] [ 16972/ 0 kb/s] [eta 00m:07s] fio: (groupid=0): err= 0: pid=21134 read : io=100MiB, bw=3,999KiB/s, runt= 26218msec slat (msec): min= 0, max= 2781, avg=445.18, stdev=818.19 clat (msec): min= 1, max= 533, avg=94.71, stdev=83.97 bw (KiB/s) : min= 6, max=12918, per=36.99%, avg=4437.71, stdev=3209.76 write: io=25,008KiB, bw=1,092KiB/s, runt= 23430msec slat (msec): min= 0, max= 2, avg= 0.07, stdev= 0.28 clat (msec): min= 0, max= 765, avg=120.68, stdev=109.57 bw (KiB/s) : min= 0, max= 7672, per=68.12%, avg=2154.10, stdev=1952.32 cpu : usr=3.52%, sys=0.20%, ctx=1757 IO depths : 1=0.1%, 2=0.2%, 4=10.4%, 8=89.3%, 16=0.0%, 32=0.0%, >=64=0.0% lat (msec): 2=0.4%, 4=0.6%, 10=4.4%, 20=10.9%, 50=20.5%, 100=22.0% lat (msec): 250=34.3%, 500=6.5%, 750=0.2%, 1000=0.0%, >=2000=0.0% fio: (groupid=0): err= 0: pid=21135 read : io=100MiB, bw=4,601KiB/s, runt= 22788msec slat (msec): min= 0, max= 2919, avg=548.07, stdev=890.20 clat (msec): min= 4, max= 402, avg=83.85, stdev=67.59 bw (KiB/s) : min= 47, max=13459, per=44.72%, avg=5365.22, stdev=3383.36 write: io=28,556KiB, bw=1,462KiB/s, runt= 20000msec slat (msec): min= 0, max= 15, avg= 0.19, stdev= 1.23 clat (msec): min= 0, max= 905, avg=91.59, stdev=112.73 bw (KiB/s) : min= 0, max= 5588, per=90.65%, avg=2866.24, stdev=2074.90 cpu : usr=3.49%, sys=0.19%, ctx=1702 IO depths : 1=0.1%, 2=0.3%, 4=13.7%, 8=85.9%, 16=0.0%, 32=0.0%, >=64=0.0% lat (msec): 2=1.6%, 4=0.7%, 10=4.0%, 20=9.4%, 50=24.4%, 100=29.7% lat (msec): 250=25.6%, 500=4.0%, 750=0.4%, 1000=0.0%, >=2000=0.0% fio: (groupid=0): err= 0: pid=21136 read : io=100MiB, bw=4,040KiB/s, runt= 25951msec slat (msec): min= 0, max= 2448, avg=230.06, stdev=542.35 clat (msec): min= 1, max= 491, avg=94.85, stdev=73.87 bw (KiB/s) : min= 159, max=15089, per=34.26%, avg=4111.04, stdev=3039.34 write: io=19,024KiB, bw=828KiB/s, runt= 23503msec slat (msec): min= 0, max= 3, avg= 0.06, stdev= 0.31 clat (msec): min= 0, max= 935, avg=121.49, stdev=131.06 bw (KiB/s) : min= 0, max= 4823, per=52.32%, avg=1654.33, stdev=1763.73 cpu : usr=3.41%, sys=0.15%, ctx=1807 IO depths : 1=0.1%, 2=0.2%, 4=8.9%, 8=90.8%, 16=0.0%, 32=0.0%, >=64=0.0% lat (msec): 2=0.5%, 4=0.4%, 10=2.3%, 20=8.8%, 50=20.1%, 100=27.3% lat (msec): 250=35.3%, 500=4.7%, 750=0.2%, 1000=0.2%, >=2000=0.0% Run status group 0 (all jobs): READ: io=300MiB, aggrb=11,998KiB/s, minb=3,999KiB/s, maxb=4,601KiB/s, mint=22788msec, maxt=26218msec WRITE: io=72,588KiB, aggrb=3,162KiB/s, minb=828KiB/s, maxb=1,462KiB/s, mint=22788msec, maxt=26218msec Disk stats (read/write): sda: ios=5049/1420, merge=1445/335, ticks=487616/258480, in_queue=746104, util=99.48% 2.66user 0.18system 0:26.44elapsed 10%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+2382minor)pagefaults 0swaps