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 Threads: 3 fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed. fio: pid=474, got signal=6 Threads: 2: [m_m] [27.3% done] [ 9612/ 62608 kb/s] [eta 00m:08s] Threads: 2: [m_F] [50.0% done] [ 2954/ 77848 kb/s] [eta 00m:04s] Threads: 2: [m_F] [50.0% done] [ 1404/ 0 kb/s] [eta 00m:05s] Threads: 2: [m_F] [50.0% done] [ 704/ 0 kb/s] [eta 00m:06s] Threads: 2: [F_F] [100.0% done] [ 252/ 29880 kb/s] [eta 00m:00s] Threads: 2: [F_F] [100.0% done] [ 0/ 0 kb/s] [eta 00m:00s] Threads: 2: [F_F] [100.0% done] [ 0/ 0 kb/s] [eta 00m:00s] Threads: 2: [F_V] [71.4% done] [ 1108/ 0 kb/s] [eta 00m:04s] Threads: 2: [F_V] [78.6% done] [ 9432/ 0 kb/s] [eta 00m:03s] Threads: 2: [F_V] [85.7% done] [ 10456/ 0 kb/s] [eta 00m:02s] Threads: 2: [F_V] [86.7% done] [ 7020/ 0 kb/s] [eta 00m:02s] Threads: 2: [F_V] [93.3% done] [ 10592/ 0 kb/s] [eta 00m:01s] Threads: 2: [F_V] [100.0% done] [ 18444/ 0 kb/s] [eta 00m:00s] Threads: 2: [F_V] [100.0% done] [ 11432/ 0 kb/s] [eta 00m:00s] Threads: 2: [F_V] [100.0% done] [ 10808/ 0 kb/s] [eta 00m:00s] Threads: 2: [F_V] [100.0% done] [ 4192/ 0 kb/s] [eta 00m:00s] Threads: 1: [F__] [100.0% done] [ 5172/ 0 kb/s] [eta 00m:00s] Threads: 1: [F__] [100.0% done] [ 0/ 0 kb/s] [eta 00m:00s] Threads: 1: [V__] [70.0% done] [ 3412/ 0 kb/s] [eta 00m:09s] Threads: 1: [V__] [84.6% done] [ 22072/ 0 kb/s] [eta 00m:04s] Threads: 1: [V__] [100.0% done] [ 35570/ 0 kb/s] [eta 00m:00s] fio: (groupid=0): err= 0: pid=473 read : io=100MiB, bw=4,299KiB/s, runt= 24374msec slat (msec): min= 0, max= 0, avg= 0.00, stdev= 0.00 clat (msec): min= 0, max= 767, avg=36.58, stdev=81.54 bw (KiB/s) : min= 5, max=35636, per=111.87%, avg=10032.56, stdev=12894.95 write: io=85,180KiB, bw=4,068KiB/s, runt= 21440msec slat (msec): min= 0, max= 0, avg= 0.00, stdev= 0.00 clat (msec): min= 0, max= 591, avg= 2.55, stdev=24.96 bw (KiB/s) : min= 0, max=13044, per=64.23%, avg=8204.33, stdev=7143.33 cpu : usr=3.32%, sys=1.53%, ctx=5543 IO depths : 1=1.5%, 2=54.4%, 4=29.6%, 8=14.6%, 16=0.0%, 32=0.0%, >=64=0.0% lat (msec): 2=46.0%, 4=2.1%, 10=23.0%, 20=15.5%, 50=6.2%, 100=1.1% lat (msec): 250=3.6%, 500=2.0%, 750=0.2%, 1000=0.0%, >=2000=0.0% fio: (groupid=0): err= 0: pid=474 cpu : usr=0.00%, sys=0.00%, ctx=0 IO depths : 1=0.1%, 2=94.1%, 4=2.4%, 8=3.4%, 16=0.0%, 32=0.0%, >=64=0.0% lat (msec): 2=91.7%, 4=3.8%, 10=0.2%, 20=0.1%, 50=0.1%, 100=0.2% lat (msec): 250=2.2%, 500=1.4%, 750=0.0%, 1000=0.0%, >=2000=0.0% fio: (groupid=0): err= 0: pid=475 read : io=100MiB, bw=5,496KiB/s, runt= 19077msec slat (msec): min= 0, max= 0, avg= 0.00, stdev= 0.00 clat (msec): min= 0, max= 516, avg=58.04, stdev=66.43 bw (KiB/s) : min= 15, max=21121, per=88.94%, avg=7976.50, stdev=5215.29 write: io=88,660KiB, bw=9,371KiB/s, runt= 9688msec slat (msec): min= 0, max= 0, avg= 0.00, stdev= 0.00 clat (msec): min= 0, max= 198, avg= 1.04, stdev=10.34 bw (KiB/s) : min= 0, max=15699, per=61.45%, avg=7849.50, stdev=11100.87 cpu : usr=3.59%, sys=2.03%, ctx=4680 IO depths : 1=1.1%, 2=50.3%, 4=30.6%, 8=18.0%, 16=0.0%, 32=0.0%, >=64=0.0% lat (msec): 2=47.0%, 4=0.2%, 10=10.0%, 20=9.7%, 50=12.9%, 100=9.7% lat (msec): 250=9.6%, 500=0.7%, 750=0.1%, 1000=0.0%, >=2000=0.0% Run status group 0 (all jobs): READ: io=208MiB, aggrb=8,968KiB/s, minb=0KiB/s, maxb=5,496KiB/s, mint=19077msec, maxt=24374msec WRITE: io=261MiB, aggrb=12,773KiB/s, minb=0KiB/s, maxb=9,371KiB/s, mint=19077msec, maxt=24374msec Disk stats (read/write): sda: ios=2672/2608, merge=758/64165, ticks=45728/2561940, in_queue=2611860, util=98.64% 2.38user 1.01system 0:24.68elapsed 13%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+2488minor)pagefaults 0swaps