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=14593, got signal=6 Threads: 2 Threads: 2: [Fm_] [42.9% done] [ 1275/ 48343 kb/s] [eta 00m:04s] Threads: 2: [Fm_] [44.4% done] [ 446/ 0 kb/s] [eta 00m:05s] Threads: 2: [Fm_] [45.5% done] [ 300/ 365 kb/s] [eta 00m:06s] Threads: 2: [Fm_] [46.2% done] [ 804/ 0 kb/s] [eta 00m:07s] Threads: 2: [Fm_] [46.7% done] [ 1552/ 0 kb/s] [eta 00m:08s] Threads: 2: [VF_] [80.0% done] [ 9687/ 33970 kb/s] [eta 00m:02s] Threads: 2: [VF_] [81.8% done] [ 7155/ 0 kb/s] [eta 00m:02s] Threads: 2: [VF_] [90.9% done] [ 19752/ 0 kb/s] [eta 00m:01s] Threads: 2: [VF_] [100.0% done] [ 15063/ 0 kb/s] [eta 00m:00s] Threads: 2: [VF_] [100.0% done] [ 7931/ 0 kb/s] [eta 00m:00s] Threads: 2: [VF_] [100.0% done] [ 12450/ 0 kb/s] [eta 00m:00s] Threads: 2: [VF_] [100.0% done] [ 4839/ 0 kb/s] [eta 00m:00s] Threads: 2: [VF_] [100.0% done] [ 4063/ 0 kb/s] [eta 00m:00s] Threads: 2: [VF_] [100.0% done] [ 9784/ 0 kb/s] [eta 00m:00s] Threads: 1: [_F_] [100.0% done] [ 3957/ 0 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_] [71.4% done] [ 6924/ 0 kb/s] [eta 00m:08s] Threads: 1: [_V_] [95.5% done] [ 33519/ 0 kb/s] [eta 00m:01s] Threads: 1: [_V_] [100.0% done] [ 31695/ 0 kb/s] [eta 00m:00s] fio: (groupid=0): err= 0: pid=14591 read : io=100MiB, bw=6,268KiB/s, runt= 16727msec slat (msec): min= 0, max= 2, avg= 0.03, stdev= 0.23 clat (msec): min= 0, max= 402, avg=52.14, stdev=61.64 bw (KiB/s) : min= 16, max=20037, per=95.30%, avg=8898.95, stdev=5720.66 write: io=93,140KiB, bw=13,008KiB/s, runt= 7332msec slat (msec): min= 0, max= 0, avg= 0.00, stdev= 0.00 clat (msec): min= 0, max= 115, avg= 0.56, stdev= 5.02 bw (KiB/s) : min= 0, max=47624, per=161.24%, avg=23812.00, stdev=33675.25 cpu : usr=4.69%, sys=2.39%, ctx=6345 IO depths : 1=0.7%, 2=50.8%, 4=31.1%, 8=17.4%, 16=0.0%, 32=0.0%, >=64=0.0% lat (msec): 2=47.6%, 4=3.1%, 10=7.9%, 20=14.5%, 50=8.9%, 100=7.9% lat (msec): 250=9.4%, 500=0.7%, 750=0.0%, 1000=0.0%, >=2000=0.0% fio: (groupid=0): err= 0: pid=14592 read : io=100MiB, bw=4,587KiB/s, runt= 22857msec slat (msec): min= 0, max= 0, avg= 0.00, stdev= 0.00 clat (msec): min= 0, max= 1162, avg=42.06, stdev=117.64 bw (KiB/s) : min= 4, max=36429, per=97.21%, avg=9077.16, stdev=14024.47 write: io=94,376KiB, bw=4,870KiB/s, runt= 19844msec slat (msec): min= 0, max= 0, avg= 0.00, stdev= 0.00 clat (msec): min= 0, max= 954, avg= 2.96, stdev=42.88 bw (KiB/s) : min= 0, max=123879, per=209.98%, avg=31009.25, stdev=61913.19 cpu : usr=3.41%, sys=1.49%, ctx=7850 IO depths : 1=0.6%, 2=50.3%, 4=31.4%, 8=17.7%, 16=0.0%, 32=0.0%, >=64=0.0% lat (msec): 2=47.5%, 4=3.2%, 10=13.2%, 20=24.9%, 50=5.6%, 100=0.8% lat (msec): 250=2.2%, 500=1.5%, 750=0.7%, 1000=0.2%, >=2000=0.2% fio: (groupid=0): err= 0: pid=14593 cpu : usr=0.00%, sys=0.00%, ctx=0 IO depths : 1=0.4%, 2=89.7%, 4=7.9%, 8=2.0%, 16=0.0%, 32=0.0%, >=64=0.0% lat (msec): 2=95.5%, 4=0.6%, 10=1.6%, 20=0.0%, 50=0.1%, 100=0.3% lat (msec): 250=1.7%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0% Run status group 0 (all jobs): READ: io=204MiB, aggrb=9,338KiB/s, minb=0KiB/s, maxb=6,268KiB/s, mint=0msec, maxt=22857msec WRITE: io=279MiB, aggrb=14,768KiB/s, minb=0KiB/s, maxb=13,008KiB/s, mint=0msec, maxt=22857msec Disk stats (read/write): sda: ios=2312/2827, merge=1048/68492, ticks=42092/2610268, in_queue=2661936, util=98.96% 2.37user 0.99system 0:23.21elapsed 14%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+2510minor)pagefaults 0swaps