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 Threads: 3: [mmF] [50.0% done] [ 5435/ 48703 kb/s] [eta 00m:03s] Threads: 3: [FmF] [50.0% done] [ 1303/ 15868 kb/s] [eta 00m:04s] Threads: 3: [FmF] [50.0% done] [ 992/ 0 kb/s] [eta 00m:05s] Threads: 3: [FmF] [50.0% done] [ 874/ 0 kb/s] [eta 00m:06s] Threads: 3: [FmF] [50.0% done] [ 819/ 0 kb/s] [eta 00m:07s] Threads: 3: [FmF] [50.0% done] [ 732/ 338 kb/s] [eta 00m:08s] Threads: 3: [FmF] [50.0% done] [ 716/ 0 kb/s] [eta 00m:09s] Threads: 3: [FmF] [50.0% done] [ 1098/ 0 kb/s] [eta 00m:10s] fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed. fio: pid=27731, got signal=6 Threads: 2: [F_F] [100.0% done] [ 259/ 25804 kb/s] [eta 00m:00s] Threads: 2: [F_V] [70.6% done] [ 1748/ 0 kb/s] [eta 00m:05s] Threads: 2: [F_V] [72.2% done] [ 5183/ 0 kb/s] [eta 00m:05s] Threads: 2: [F_V] [77.8% done] [ 7865/ 0 kb/s] [eta 00m:04s] Threads: 2: [F_V] [83.3% done] [ 7392/ 0 kb/s] [eta 00m:03s] Threads: 2: [F_V] [88.9% done] [ 5856/ 0 kb/s] [eta 00m:02s] Threads: 2: [F_V] [94.4% done] [ 8089/ 0 kb/s] [eta 00m:01s] Threads: 2: [F_V] [100.0% done] [ 10236/ 0 kb/s] [eta 00m:00s] Threads: 2: [F_V] [100.0% done] [ 13477/ 0 kb/s] [eta 00m:00s] Threads: 2: [V_V] [67.7% done] [ 17990/ 0 kb/s] [eta 00m:10s] Threads: 2: [V_V] [75.9% done] [ 24772/ 0 kb/s] [eta 00m:07s] Threads: 1: [V__] [92.0% done] [ 29081/ 0 kb/s] [eta 00m:02s] Threads: 1: [V__] [100.0% done] [ 37494/ 0 kb/s] [eta 00m:00s] fio: (groupid=0): err= 0: pid=27730 read : io=100MiB, bw=4,249KiB/s, runt= 24669msec slat (msec): min= 0, max= 0, avg= 0.00, stdev= 0.00 clat (msec): min= 0, max= 511, avg=30.68, stdev=60.77 bw (KiB/s) : min= 0, max=38334, per=150.75%, avg=14320.00, stdev=15025.52 write: io=94,464KiB, bw=4,725KiB/s, runt= 20468msec slat (msec): min= 0, max= 0, avg= 0.00, stdev= 0.00 clat (msec): min= 0, max= 306, avg= 1.35, stdev=12.70 bw (KiB/s) : min= 0, max=122986, per=326.05%, avg=44499.67, stdev=68174.11 cpu : usr=3.06%, sys=1.75%, ctx=5091 IO depths : 1=3.8%, 2=55.1%, 4=30.3%, 8=10.8%, 16=0.0%, 32=0.0%, >=64=0.0% lat (msec): 2=46.7%, 4=0.8%, 10=20.6%, 20=16.8%, 50=8.6%, 100=2.3% lat (msec): 250=2.6%, 500=1.4%, 750=0.1%, 1000=0.0%, >=2000=0.0% fio: (groupid=0): err= 0: pid=27731 cpu : usr=0.00%, sys=0.00%, ctx=0 IO depths : 1=0.4%, 2=81.1%, 4=4.2%, 8=14.4%, 16=0.0%, 32=0.0%, >=64=0.0% lat (msec): 2=81.9%, 4=0.2%, 10=0.1%, 20=0.0%, 50=0.1%, 100=2.4% lat (msec): 250=6.8%, 500=5.2%, 750=2.5%, 1000=0.4%, >=2000=0.0% fio: (groupid=0): err= 0: pid=27732 read : io=100MiB, bw=4,724KiB/s, runt= 22193msec slat (msec): min= 0, max= 0, avg= 0.00, stdev= 0.00 clat (msec): min= 0, max= 299, avg=48.13, stdev=51.50 bw (KiB/s) : min= 8, max=28090, per=89.95%, avg=8544.64, stdev=7094.01 write: io=98MiB, bw=8,517KiB/s, runt= 12028msec slat (msec): min= 0, max= 0, avg= 0.00, stdev= 0.00 clat (msec): min= 0, max= 94, avg= 0.75, stdev= 5.18 bw (KiB/s) : min= 0, max=55720, per=204.13%, avg=27860.00, stdev=39399.99 cpu : usr=3.73%, sys=1.96%, ctx=4764 IO depths : 1=2.2%, 2=54.7%, 4=31.0%, 8=12.0%, 16=0.0%, 32=0.0%, >=64=0.0% lat (msec): 2=49.1%, 4=0.2%, 10=9.0%, 20=11.7%, 50=12.2%, 100=9.3% lat (msec): 250=8.3%, 500=0.1%, 750=0.0%, 1000=0.0%, >=2000=0.0% Run status group 0 (all jobs): READ: io=223MiB, aggrb=9,499KiB/s, minb=0KiB/s, maxb=4,724KiB/s, mint=22193msec, maxt=24669msec WRITE: io=266MiB, aggrb=13,648KiB/s, minb=0KiB/s, maxb=8,517KiB/s, mint=22193msec, maxt=24669msec Disk stats (read/write): sda: ios=2556/2941, merge=905/64917, ticks=53096/2386980, in_queue=2552564, util=96.65% 2.25user 1.18system 0:25.06elapsed 13%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+2485minor)pagefaults 0swaps