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=17789 read : io=4,096MiB, bw=229MiB/s, iops=5,840, runt= 17914msec clat (usec): min=11, max=305, avg=38.32, stdev=18.68 bw (KiB/s) : min= 0, max=254176, per=97.23%, avg=227660.44, stdev=49635.30 write: io=4,096MiB, bw=18,798KiB/s, iops=468, runt=223115msec clat (usec): min=13, max=509K, avg=1622.13, stdev=10824.23 bw (KiB/s) : min= 0, max=66560, per=102.60%, avg=19287.17, stdev=18019.84 cpu : usr=30.10%, sys=3.95%, ctx=15985, majf=0, minf=2099253 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=104625/104625, short=0/0 lat (usec): 20=12.92%, 50=36.64%, 100=29.48%, 250=13.03%, 500=2.47% lat (usec): 750=0.28%, 1000=0.42% lat (msec): 2=2.32%, 4=0.66%, 10=0.54%, 20=0.29%, 50=0.43% lat (msec): 100=0.36%, 250=0.16%, 500=0.01%, 750=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=17926 read : io=3,072MiB, bw=8,906KiB/s, iops=222, runt=353199msec clat (usec): min=6, max=6,564, avg=77.24, stdev=85.80 bw (KiB/s) : min= 8, max=489888, per=34.38%, avg=12248.00, stdev=38377.89 write: io=1,024MiB, bw=2,968KiB/s, iops=74, runt=353208msec clat (usec): min=6, max=4,606K, avg=13204.42, stdev=140557.58 bw (KiB/s) : min= 0, max=156064, per=32.93%, avg=3910.48, stdev=12136.69 cpu : usr=1.32%, sys=1.70%, ctx=5924, majf=0, minf=850143 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=78660/26249, short=0/0 lat (usec): 10=0.16%, 20=5.20%, 50=28.70%, 100=32.72%, 250=32.58% lat (usec): 500=0.21%, 750=0.03%, 1000=0.01% lat (msec): 2=0.04%, 4=0.01%, 10=0.01%, 20=0.01%, 50=0.01% lat (msec): 100=0.01%, 250=0.03%, 500=0.03%, 750=0.04%, 1000=0.05% lat (msec): 2000=0.12%, >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=17927 read : io=3,072MiB, bw=9,049KiB/s, iops=226, runt=347612msec clat (usec): min=6, max=20,023, avg=74.70, stdev=122.18 bw (KiB/s) : min= 2, max=430176, per=38.52%, avg=13723.67, stdev=46964.59 write: io=1,024MiB, bw=3,016KiB/s, iops=75, runt=347600msec clat (usec): min=7, max=8,645K, avg=13048.83, stdev=152725.13 bw (KiB/s) : min= 0, max=153568, per=36.75%, avg=4363.69, stdev=15746.85 cpu : usr=1.31%, sys=1.51%, ctx=5712, majf=0, minf=848267 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=78688/26158, short=0/0 lat (usec): 10=0.09%, 20=4.67%, 50=29.16%, 100=34.65%, 250=30.84% lat (usec): 500=0.22%, 750=0.03%, 1000=0.01% lat (msec): 2=0.02%, 4=0.01%, 10=0.01%, 20=0.01%, 50=0.01% lat (msec): 100=0.01%, 250=0.03%, 500=0.02%, 750=0.05%, 1000=0.04% lat (msec): 2000=0.11%, >=2000=0.03% stresser: (groupid=1, jobs=1): err= 0: pid=17928 read : io=3,072MiB, bw=8,994KiB/s, iops=224, runt=349742msec clat (usec): min=6, max=363K, avg=80.90, stdev=1297.43 bw (KiB/s) : min= 12, max=564064, per=37.84%, avg=13480.80, stdev=44013.67 write: io=1,024MiB, bw=2,998KiB/s, iops=74, runt=349722msec clat (usec): min=8, max=4,940K, avg=13132.17, stdev=143332.36 bw (KiB/s) : min= 0, max=182368, per=35.67%, avg=4235.42, stdev=13901.70 cpu : usr=1.35%, sys=1.69%, ctx=5115, majf=0, minf=847525 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=78464/26117, short=0/0 lat (usec): 10=0.12%, 20=4.89%, 50=28.72%, 100=33.02%, 250=32.60% lat (usec): 500=0.25%, 750=0.03%, 1000=0.01% lat (msec): 2=0.01%, 4=0.01%, 10=0.01%, 20=0.01%, 50=0.01% lat (msec): 100=0.01%, 250=0.04%, 500=0.04%, 750=0.05%, 1000=0.04% lat (msec): 2000=0.11%, >=2000=0.03% stresser: (groupid=1, jobs=1): err= 0: pid=17929 read : io=3,072MiB, bw=9,211KiB/s, iops=229, runt=341484msec clat (usec): min=6, max=8,108, avg=71.24, stdev=61.90 bw (KiB/s) : min= 10, max=533216, per=40.31%, avg=14360.18, stdev=52270.70 write: io=1,024MiB, bw=3,025KiB/s, iops=75, runt=346643msec clat (usec): min=7, max=4,683K, avg=12995.17, stdev=141406.72 bw (KiB/s) : min= 0, max=175744, per=38.22%, avg=4539.04, stdev=16879.50 cpu : usr=1.32%, sys=1.70%, ctx=5184, majf=0, minf=847635 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=78484/26215, short=0/0 lat (usec): 10=0.17%, 20=5.01%, 50=30.19%, 100=35.50%, 250=28.59% lat (usec): 500=0.19%, 750=0.03%, 1000=0.01% lat (msec): 2=0.01%, 4=0.01%, 10=0.01%, 20=0.01%, 50=0.01% lat (msec): 100=0.01%, 250=0.03%, 500=0.04%, 750=0.05%, 1000=0.04% lat (msec): 2000=0.11%, >=2000=0.03% Run status group 0 (all jobs): READ: io=4,096MiB, aggrb=229MiB/s, minb=229MiB/s, maxb=229MiB/s, mint=17914msec, maxt=17914msec WRITE: io=4,096MiB, aggrb=18,798KiB/s, minb=18,798KiB/s, maxb=18,798KiB/s, mint=223115msec, maxt=223115msec Run status group 1 (all jobs): READ: io=12,288MiB, aggrb=35,625KiB/s, minb=8,906KiB/s, maxb=9,211KiB/s, mint=341484msec, maxt=353199msec WRITE: io=4,096MiB, aggrb=11,875KiB/s, minb=2,968KiB/s, maxb=3,025KiB/s, mint=346643msec, maxt=353208msec Disk stats (read/write): sda: ios=18409/78629, merge=14387/1875299, ticks=243044/72116076, in_queue=72360240, util=96.49% 92.86user 73.83system 13:34.13elapsed 20%CPU (0avgtext+0avgdata 0maxresident)k 8389568inputs+24135280outputs (30major+5497720minor)pagefaults 0swaps