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: [mFm] [50.0% done] [ 5696/ 50872 kb/s] [eta 00m:03s] Threads: 3: [mFm] [50.0% done] [ 5484/ 0 kb/s] [eta 00m:04s] Threads: 3: [mFm] [50.0% done] [ 8080/ 0 kb/s] [eta 00m:05s] Threads: 3: [FFm] [54.5% done] [ 4692/ 24076 kb/s] [eta 00m:05s] Threads: 3: [FFm] [53.8% done] [ 1192/ 0 kb/s] [eta 00m:06s] Threads: 3: [FFm] [53.3% done] [ 1652/ 0 kb/s] [eta 00m:07s] Threads: 3: [FFF] [100.0% done] [ 656/ 21556 kb/s] [eta 00m:00s] Threads: 3: [FFF] [100.0% done] [ 0/ 0 kb/s] [eta 00m:00s] Threads: 3: [FFF] [100.0% done] [ 0/ 0 kb/s] [eta 00m:00s] Threads: 3: [FFF] [100.0% done] [ 0/ 0 kb/s] [eta 00m:00s] Threads: 3: [FFF] [100.0% done] [ 0/ 0 kb/s] [eta 00m:00s] Threads: 3: [FFF] [100.0% done] [ 0/ 0 kb/s] [eta 00m:00s] Threads: 3: [FFF] [100.0% done] [ 0/ 0 kb/s] [eta 00m:00s] Threads: 3: [FFF] [100.0% done] [ 0/ 0 kb/s] [eta 00m:00s] fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed. fio: pid=14383, got signal=6 Threads: 2: [_VV] [70.8% done] [ 17176/ 0 kb/s] [eta 00m:07s] Threads: 2: [_VV] [78.3% done] [ 28844/ 0 kb/s] [eta 00m:05s] Threads: 2: [_VV] [90.5% done] [ 27248/ 0 kb/s] [eta 00m:02s] Threads: 2: [_VV] [100.0% done] [ 36100/ 0 kb/s] [eta 00m:00s] Threads: 2: [_VV] [100.0% done] [ 29795/ 0 kb/s] [eta 00m:00s] Threads: 2: [_VV] [100.0% done] [ 32804/ 0 kb/s] [eta 00m:00s] fio: (groupid=0): err= 0: pid=14383 cpu : usr=0.00%, sys=0.00%, ctx=0 IO depths : 1=0.4%, 2=77.8%, 4=4.8%, 8=17.0%, 16=0.0%, 32=0.0%, >=64=0.0% lat (msec): 2=77.6%, 4=0.7%, 10=0.6%, 20=0.1%, 50=0.7%, 100=9.4% lat (msec): 250=9.4%, 500=0.7%, 750=0.4%, 1000=0.0%, >=2000=0.0% fio: (groupid=0): err= 0: pid=14384 read : io=100MiB, bw=4,632KiB/s, runt= 22634msec clat (msec): min= 0, max= 446, avg=27.00, stdev=51.54 bw (KiB/s) : min= 2, max=28745, per=149.93%, avg=15577.50, stdev=8945.00 write: io=100MiB, bw=6,356KiB/s, runt= 16496msec slat (msec): min= 0, max= 0, avg= 0.00, stdev= 0.00 clat (msec): min= 0, max= 10, avg= 0.24, stdev= 0.62 bw (KiB/s) : min= 0, max=125136, per=393.71%, avg=62568.00, stdev=88484.51 cpu : usr=3.61%, sys=2.26%, ctx=5045 IO depths : 1=1.7%, 2=57.0%, 4=31.4%, 8=9.9%, 16=0.0%, 32=0.0%, >=64=0.0% lat (msec): 2=50.4%, 4=1.3%, 10=22.8%, 20=14.1%, 50=5.6%, 100=0.7% lat (msec): 250=4.4%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0% fio: (groupid=0): err= 0: pid=14385 read : io=100MiB, bw=4,581KiB/s, runt= 22889msec slat (msec): min= 0, max= 0, avg= 0.00, stdev= 0.00 clat (msec): min= 0, max= 782, avg=70.74, stdev=99.36 bw (KiB/s) : min= 7, max=22300, per=61.93%, avg=6434.64, stdev=6900.18 write: io=78,672KiB, bw=4,885KiB/s, runt= 16488msec slat (msec): min= 0, max= 0, avg= 0.00, stdev= 0.00 clat (msec): min= 0, max= 223, avg= 1.07, stdev=10.67 bw (KiB/s) : min= 0, max= 6809, per=21.42%, avg=3404.50, stdev=4814.69 cpu : usr=2.90%, sys=1.63%, ctx=5340 IO depths : 1=0.9%, 2=45.5%, 4=29.0%, 8=24.7%, 16=0.0%, 32=0.0%, >=64=0.0% lat (msec): 2=41.7%, 4=1.0%, 10=9.9%, 20=14.9%, 50=10.8%, 100=6.2% lat (msec): 250=11.6%, 500=3.2%, 750=0.5%, 1000=0.0%, >=2000=0.0% Run status group 0 (all jobs): READ: io=227MiB, aggrb=10,390KiB/s, minb=0KiB/s, maxb=4,632KiB/s, mint=22634msec, maxt=22889msec WRITE: io=250MiB, aggrb=15,892KiB/s, minb=0KiB/s, maxb=6,356KiB/s, mint=22634msec, maxt=22889msec Disk stats (read/write): sda: ios=3021/1914, merge=792/62131, ticks=52480/2294064, in_queue=2346544, util=99.03% 2.16user 1.23system 0:23.24elapsed 14%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+2468minor)pagefaults 0swaps