stresser: (g=0): rw=write, bs=16K-64K/16K-64K, ioengine=mmap, iodepth=1 stresser: (g=1): rw=randrw, bs=16K-64K/16K-64K, ioengine=mmap, iodepth=4 ... stresser: (g=1): rw=randrw, bs=16K-64K/16K-64K, ioengine=mmap, iodepth=4 Starting 5 processes stresser: Laying out IO file(s) (1 file(s) / 4096MiB) stresser: (groupid=0, jobs=1): err= 0: pid=17039 read : io=4,096MiB, bw=236MiB/s, iops=6,033, runt= 17391msec clat (usec): min=11, max=255, avg=32.07, stdev=15.84 bw (KiB/s) : min= 0, max=254144, per=97.22%, avg=234473.14, stdev=54153.89 write: io=4,096MiB, bw=17,770KiB/s, iops=444, runt=236028msec clat (usec): min=13, max=974K, avg=1738.26, stdev=12751.20 bw (KiB/s) : min= 0, max=66240, per=103.20%, avg=18339.34, stdev=18349.07 cpu : usr=28.82%, sys=3.29%, ctx=15914, majf=0, minf=2099257 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued r/w: total=104926/104926, short=0/0 lat (usec): 20=14.43%, 50=48.27%, 100=19.42%, 250=10.26%, 500=2.51% lat (usec): 750=0.25%, 1000=0.28% lat (msec): 2=2.03%, 4=0.86%, 10=0.41%, 20=0.28%, 50=0.45% lat (msec): 100=0.37%, 250=0.18%, 500=0.01%, 750=0.01%, 1000=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=17052 read : io=3,072MiB, bw=9,029KiB/s, iops=225, runt=348397msec clat (usec): min=4, max=22,137, avg=81.07, stdev=185.86 bw (KiB/s) : min= 18, max=376832, per=34.78%, avg=12560.82, stdev=31486.07 write: io=1,024MiB, bw=3,009KiB/s, iops=74, runt=348378msec clat (usec): min=12, max=3,636K, avg=13105.29, stdev=136713.19 bw (KiB/s) : min= 0, max=128064, per=33.29%, avg=4007.90, stdev=10185.33 cpu : usr=1.39%, sys=1.62%, ctx=5946, majf=0, minf=851005 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued r/w: total=78563/26064, short=0/0 lat (usec): 10=0.01%, 20=4.01%, 50=28.07%, 100=32.41%, 250=34.80% lat (usec): 500=0.24%, 750=0.02%, 1000=0.01% lat (msec): 2=0.01%, 4=0.01%, 10=0.07%, 20=0.01%, 50=0.01% lat (msec): 100=0.01%, 250=0.04%, 500=0.04%, 750=0.06%, 1000=0.05% lat (msec): 2000=0.11%, >=2000=0.03% stresser: (groupid=1, jobs=1): err= 0: pid=17053 read : io=3,072MiB, bw=9,354KiB/s, iops=234, runt=336297msec clat (usec): min=6, max=32,167, avg=67.37, stdev=152.31 bw (KiB/s) : min= 8, max=619136, per=41.67%, avg=15049.81, stdev=62301.58 write: io=1,024MiB, bw=3,117KiB/s, iops=77, runt=336299msec clat (usec): min=8, max=13,542K, avg=12631.09, stdev=157059.32 bw (KiB/s) : min= 0, max=189120, per=40.00%, avg=4815.31, stdev=19709.49 cpu : usr=1.30%, sys=1.50%, ctx=5210, majf=0, minf=848840 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued r/w: total=78756/26173, short=0/0 lat (usec): 10=0.23%, 20=6.65%, 50=31.91%, 100=36.83%, 250=23.79% lat (usec): 500=0.24%, 750=0.03%, 1000=0.01% lat (msec): 4=0.01%, 10=0.01%, 20=0.01%, 50=0.01%, 100=0.01% lat (msec): 250=0.03%, 500=0.03%, 750=0.06%, 1000=0.05%, 2000=0.10% lat (msec): >=2000=0.03% stresser: (groupid=1, jobs=1): err= 0: pid=17054 read : io=3,072MiB, bw=9,218KiB/s, iops=230, runt=341231msec clat (usec): min=6, max=365K, avg=84.03, stdev=1321.04 bw (KiB/s) : min= 10, max=357568, per=34.62%, avg=12503.80, stdev=31310.08 write: io=1,024MiB, bw=3,032KiB/s, iops=75, runt=345802msec clat (usec): min=6, max=4,360K, avg=12901.04, stdev=137426.41 bw (KiB/s) : min= 0, max=122688, per=33.08%, avg=3983.09, stdev=10277.31 cpu : usr=1.45%, sys=1.36%, ctx=6085, majf=0, minf=850455 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued r/w: total=78781/26255, short=0/0 lat (usec): 10=0.02%, 20=4.25%, 50=28.60%, 100=32.74%, 250=33.70% lat (usec): 500=0.25%, 750=0.03%, 1000=0.01% lat (msec): 2=0.02%, 4=0.01%, 10=0.06%, 20=0.01%, 50=0.01% lat (msec): 100=0.01%, 250=0.03%, 500=0.03%, 750=0.06%, 1000=0.06% lat (msec): 2000=0.10%, >=2000=0.03% stresser: (groupid=1, jobs=1): err= 0: pid=17055 read : io=3,072MiB, bw=9,403KiB/s, iops=235, runt=334543msec clat (usec): min=6, max=32,671, avg=69.47, stdev=171.76 bw (KiB/s) : min= 8, max=553856, per=41.88%, avg=15125.21, stdev=60062.07 write: io=1,024MiB, bw=3,134KiB/s, iops=78, runt=334526msec clat (usec): min=7, max=5,109K, avg=12548.17, stdev=138535.17 bw (KiB/s) : min= 0, max=185728, per=38.75%, avg=4665.43, stdev=18974.17 cpu : usr=1.30%, sys=1.50%, ctx=5392, majf=0, minf=849261 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued r/w: total=78667/26192, short=0/0 lat (usec): 10=0.21%, 20=6.49%, 50=31.28%, 100=36.64%, 250=24.73% lat (usec): 500=0.27%, 750=0.04%, 1000=0.01% lat (msec): 2=0.01%, 4=0.01%, 10=0.02%, 20=0.01%, 50=0.01% lat (msec): 100=0.01%, 250=0.03%, 500=0.03%, 750=0.05%, 1000=0.05% lat (msec): 2000=0.11%, >=2000=0.03% Run status group 0 (all jobs): READ: io=4,096MiB, aggrb=236MiB/s, minb=236MiB/s, maxb=236MiB/s, mint=17391msec, maxt=17391msec WRITE: io=4,096MiB, aggrb=17,770KiB/s, minb=17,770KiB/s, maxb=17,770KiB/s, mint=236028msec, maxt=236028msec Run status group 1 (all jobs): READ: io=12,288MiB, aggrb=36,116KiB/s, minb=9,029KiB/s, maxb=9,403KiB/s, mint=334543msec, maxt=348397msec WRITE: io=4,096MiB, aggrb=12,039KiB/s, minb=3,009KiB/s, maxb=3,134KiB/s, mint=334526msec, maxt=348378msec Disk stats (read/write): sda: ios=18432/77620, merge=14364/1876041, ticks=257080/74602432, in_queue=74859480, util=96.64% 91.82user 68.71system 13:05.76elapsed 20%CPU (0avgtext+0avgdata 0maxresident)k 8389568inputs+24144040outputs (30major+5503709minor)pagefaults 0swaps