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=17773, got signal=6 Threads: 2 Threads: 2: [_mF] [27.3% done] [ 8236/ 36392 kb/s] [eta 00m:08s] Threads: 2: [_mF] [28.6% done] [ 0/ 0 kb/s] [eta 00m:10s] Threads: 2: [_mF] [27.8% done] [ 156/ 0 kb/s] [eta 00m:13s] Threads: 2: [_mF] [27.3% done] [ 8/ 0 kb/s] [eta 00m:16s] Threads: 2: [_mF] [28.0% done] [ 276/ 0 kb/s] [eta 00m:18s] Threads: 2: [_mF] [27.6% done] [ 132/ 0 kb/s] [eta 00m:21s] Threads: 2: [_mF] [28.1% done] [ 72/ 340 kb/s] [eta 00m:23s] Threads: 2: [_mF] [27.8% done] [ 16/ 0 kb/s] [eta 00m:26s] Threads: 2: [_mF] [28.2% done] [ 284/ 364 kb/s] [eta 00m:28s] Threads: 2: [_mF] [28.6% done] [ 92/ 28 kb/s] [eta 00m:30s] Threads: 2: [_mF] [28.3% done] [ 140/ 0 kb/s] [eta 00m:33s] Threads: 2: [_mV] [29.8% done] [ 8784/ 0 kb/s] [eta 00m:33s] Threads: 2: [_mV] [30.6% done] [ 29980/ 0 kb/s] [eta 00m:34s] Threads: 2: [_mV] [42.1% done] [ 36872/ 16328 kb/s] [eta 00m:22s] Threads: 1: [_m_] [60.7% done] [ 22592/ 27276 kb/s] [eta 00m:11s] Threads: 1: [_F_] [100.0% done] [ 0/ 11676 kb/s] [eta 00m:00s] Threads: 1: [_F_] [100.0% done] [ 0/ 0 kb/s] [eta 00m:00s] Threads: 1: [_V_] [74.1% done] [ 11268/ 0 kb/s] [eta 00m:07s] Threads: 1: [_V_] [95.5% done] [ 30396/ 0 kb/s] [eta 00m:01s] Threads: 1: [_V_] [100.0% done] [ 28680/ 0 kb/s] [eta 00m:00s] fio: (groupid=0): err= 0: pid=17773 cpu : usr=0.00%, sys=0.00%, ctx=0 IO depths : 1=0.2%, 2=89.2%, 4=6.0%, 8=4.6%, 16=0.0%, 32=0.0%, >=64=0.0% lat (msec): 2=90.0%, 4=0.7%, 10=0.1%, 20=0.9%, 50=5.5%, 100=0.5% lat (msec): 250=1.4%, 500=0.3%, 750=0.0%, 1000=0.0%, >=2000=0.0% fio: (groupid=0): err= 0: pid=17774 read : io=100MiB, bw=4,561KiB/s, runt= 22986msec slat (msec): min= 0, max= 0, avg= 0.00, stdev= 0.00 clat (msec): min= 0, max= 5967, avg=78.24, stdev=390.58 bw (KiB/s) : min= 6, max=33120, per=64.59%, avg=6057.59, stdev=10971.21 write: io=84,592KiB, bw=4,319KiB/s, runt= 20052msec slat (msec): min= 0, max= 0, avg= 0.00, stdev= 0.00 clat (msec): min= 0, max= 4339, avg=15.70, stdev=184.65 bw (KiB/s) : min= 0, max=21531, per=34.40%, avg=4838.29, stdev=8566.36 cpu : usr=3.22%, sys=1.67%, ctx=5277 IO depths : 1=1.5%, 2=52.3%, 4=31.1%, 8=15.1%, 16=0.0%, 32=0.0%, >=64=0.0% lat (msec): 2=45.7%, 4=1.6%, 10=21.1%, 20=16.2%, 50=8.2%, 100=1.4% lat (msec): 250=3.3%, 500=0.6%, 750=0.5%, 1000=0.3%, >=2000=0.4% fio: (groupid=0): err= 0: pid=17775 read : io=100MiB, bw=6,078KiB/s, runt= 17251msec slat (msec): min= 0, max= 0, avg= 0.00, stdev= 0.00 clat (msec): min= 0, max= 598, avg=25.29, stdev=49.11 bw (KiB/s) : min= 16, max=37175, per=163.82%, avg=15363.00, stdev=15095.16 write: io=94,172KiB, bw=6,991KiB/s, runt= 13792msec slat (msec): min= 0, max= 0, avg= 0.00, stdev= 0.00 clat (msec): min= 0, max= 88, avg= 0.50, stdev= 3.72 bw (KiB/s) : min= 0, max=22045, per=78.37%, avg=11022.50, stdev=15588.17 cpu : usr=4.78%, sys=2.39%, ctx=4567 IO depths : 1=1.2%, 2=54.1%, 4=30.9%, 8=13.8%, 16=0.0%, 32=0.0%, >=64=0.0% lat (msec): 2=48.1%, 4=0.5%, 10=19.9%, 20=16.7%, 50=9.4%, 100=1.9% lat (msec): 250=3.0%, 500=0.2%, 750=0.2%, 1000=0.0%, >=2000=0.0% Run status group 0 (all jobs): READ: io=206MiB, aggrb=9,378KiB/s, minb=0KiB/s, maxb=6,078KiB/s, mint=17251msec, maxt=22986msec WRITE: io=269MiB, aggrb=14,065KiB/s, minb=0KiB/s, maxb=6,991KiB/s, mint=17251msec, maxt=22986msec Disk stats (read/write): sda: ios=2722/2732, merge=886/65979, ticks=51764/1743176, in_queue=1795996, util=92.38% 2.34user 1.06system 0:24.67elapsed 13%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+2489minor)pagefaults 0swaps