fio: (g=0): rw=randrw, bs=4K-256K/4K-256K, ioengine=posixaio, iodepth=8 ... fio: (g=0): rw=randrw, bs=4K-256K/4K-256K, ioengine=posixaio, iodepth=8 Starting 3 threads Threads: 3 fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed. fio: pid=2629, got signal=6 Threads: 2 Threads: 2: [m_m] [5.0% done] [ 3030/ 892 kb/s] [eta 00m:57s] Threads: 2: [m_m] [6.7% done] [ 4072/ 0 kb/s] [eta 00m:56s] Threads: 2: [m_m] [8.3% done] [ 1912/ 68984 kb/s] [eta 00m:55s] Threads: 2: [F_m] [10.0% done] [ 4132/ 21932 kb/s] [eta 00m:54s] Threads: 2: [F_m] [11.7% done] [ 64/ 0 kb/s] [eta 00m:53s] Threads: 2: [F_m] [13.3% done] [ 180/ 0 kb/s] [eta 00m:52s] Threads: 2: [F_m] [15.0% done] [ 116/ 0 kb/s] [eta 00m:51s] Threads: 2: [F_m] [16.7% done] [ 0/ 0 kb/s] [eta 00m:50s] Threads: 2: [F_m] [18.3% done] [ 304/ 0 kb/s] [eta 00m:49s] Threads: 2: [V_m] [20.0% done] [ 11280/ 0 kb/s] [eta 00m:48s] Threads: 2: [V_m] [21.7% done] [ 29400/ 0 kb/s] [eta 00m:47s] Threads: 2: [V_m] [23.3% done] [ 35564/ 624 kb/s] [eta 00m:46s] Threads: 1: [__m] [40.5% done] [ 23020/ 40092 kb/s] [eta 00m:22s] Threads: 1: [__F] [100.0% done] [ 0/ 40720 kb/s] [eta 00m:00s] Threads: 1: [__F] [100.0% done] [ 0/ 0 kb/s] [eta 00m:00s] Threads: 1: [__F] [100.0% done] [ 0/ 0 kb/s] [eta 00m:00s] Threads: 1: [__V] [67.9% done] [ 1804/ 0 kb/s] [eta 00m:09s] Threads: 1: [__V] [87.0% done] [ 27704/ 0 kb/s] [eta 00m:03s] Threads: 1: [__V] [100.0% done] [ 33924/ 0 kb/s] [eta 00m:00s] fio: (groupid=0): err= 0: pid=2628 read : io=100MiB, bw=6,999KiB/s, runt= 14981msec slat (msec): min= 0, max= 0, avg= 0.00, stdev= 0.00 clat (msec): min= 0, max= 809, avg=34.72, stdev=93.57 bw (KiB/s) : min= 0, max=35479, per=140.29%, avg=13288.53, stdev=15126.89 write: io=91,808KiB, bw=7,921KiB/s, runt= 11868msec slat (msec): min= 0, max= 0, avg= 0.00, stdev= 0.00 clat (msec): min= 0, max= 522, avg= 3.08, stdev=31.17 bw (KiB/s) : min= 0, max=139395, per=239.85%, avg=35292.25, stdev=69404.32 cpu : usr=4.38%, sys=2.86%, ctx=4149 IO depths : 1=1.7%, 2=55.7%, 4=30.0%, 8=12.6%, 16=0.0%, 32=0.0%, >=64=0.0% lat (msec): 2=49.7%, 4=0.1%, 10=23.4%, 20=12.9%, 50=8.7%, 100=1.2% lat (msec): 250=1.9%, 500=1.2%, 750=0.6%, 1000=0.1%, >=2000=0.0% fio: (groupid=0): err= 0: pid=2629 cpu : usr=0.00%, sys=0.00%, ctx=0 IO depths : 1=1.0%, 2=95.9%, 4=2.1%, 8=0.9%, 16=0.0%, 32=0.0%, >=64=0.0% lat (msec): 2=95.3%, 4=2.1%, 10=0.4%, 20=0.4%, 50=0.1%, 100=0.2% lat (msec): 250=0.3%, 500=0.2%, 750=0.5%, 1000=0.0%, >=2000=0.0% fio: (groupid=0): err= 0: pid=2630 read : io=100MiB, bw=4,711KiB/s, runt= 22249msec slat (msec): min= 0, max= 0, avg= 0.00, stdev= 0.00 clat (msec): min= 0, max= 6005, avg=87.13, stdev=401.96 bw (KiB/s) : min= 27, max=33239, per=72.48%, avg=6865.59, stdev=11148.20 write: io=81,436KiB, bw=4,364KiB/s, runt= 19108msec slat (msec): min= 0, max= 0, avg= 0.00, stdev= 0.00 clat (msec): min= 0, max= 928, avg= 2.68, stdev=40.95 bw (KiB/s) : min= 0, max=141279, per=321.30%, avg=47275.67, stdev=81409.74 cpu : usr=2.80%, sys=1.65%, ctx=5113 IO depths : 1=1.5%, 2=53.0%, 4=29.7%, 8=15.8%, 16=0.0%, 32=0.0%, >=64=0.0% lat (msec): 2=47.7%, 4=0.1%, 10=19.1%, 20=18.5%, 50=6.8%, 100=1.6% lat (msec): 250=2.4%, 500=1.1%, 750=1.1%, 1000=0.4%, >=2000=0.6% Run status group 0 (all jobs): READ: io=201MiB, aggrb=9,472KiB/s, minb=0KiB/s, maxb=6,999KiB/s, mint=22249msec, maxt=22249msec WRITE: io=268MiB, aggrb=14,714KiB/s, minb=0KiB/s, maxb=7,921KiB/s, mint=22249msec, maxt=22249msec Disk stats (read/write): sda: ios=2505/2456, merge=820/66036, ticks=41272/1833300, in_queue=1878016, util=95.80% 2.21user 1.04system 0:22.68elapsed 14%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+2483minor)pagefaults 0swaps