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=6370 read : io=4,096MiB, bw=245MiB/s, iops=6,288, runt= 16705msec clat (usec): min=10, max=334, avg=29.99, stdev=13.86 bw (KiB/s) : min= 0, max=254816, per=97.12%, avg=243851.29, stdev=43355.76 write: io=4,096MiB, bw=21,649KiB/s, iops=542, runt=193741msec clat (usec): min=14, max=5,124K, avg=1607.31, stdev=27424.22 bw (KiB/s) : min= 0, max=47392, per=115.03%, avg=24903.45, stdev=19655.83 cpu : usr=19.56%, sys=2.60%, ctx=18011, majf=0, minf=2099258 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=105048/105048, short=0/0 lat (usec): 20=23.13%, 50=51.34%, 100=17.19%, 250=0.05%, 500=0.04% lat (usec): 750=0.04%, 1000=0.03% lat (msec): 2=0.63%, 4=4.39%, 10=2.72%, 20=0.11%, 50=0.12% lat (msec): 100=0.10%, 250=0.04%, 500=0.06%, 750=0.01%, 1000=0.01% lat (msec): 2000=0.01%, >=2000=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=6685 read : io=3,072MiB, bw=17,040KiB/s, iops=425, runt=184601msec clat (usec): min=3, max=7,341, avg=47.18, stdev=37.68 bw (KiB/s) : min= 3, max=502208, per=47.86%, avg=32083.31, stdev=87181.11 write: io=1,024MiB, bw=5,680KiB/s, iops=142, runt=184598msec clat (usec): min=5, max=5,869K, avg=6879.40, stdev=122763.59 bw (KiB/s) : min= 0, max=161888, per=45.72%, avg=10194.29, stdev=28296.36 cpu : usr=1.67%, sys=1.58%, ctx=1285, majf=0, minf=842750 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=78574/26255, short=0/0 lat (usec): 4=0.01%, 10=2.77%, 20=8.14%, 50=43.30%, 100=40.65% lat (usec): 250=4.99%, 500=0.01%, 1000=0.01% lat (msec): 2=0.01%, 10=0.01%, 100=0.01%, 250=0.01%, 500=0.02% lat (msec): 750=0.02%, 1000=0.02%, 2000=0.04%, >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6686 read : io=3,072MiB, bw=16,759KiB/s, iops=418, runt=187694msec clat (usec): min=3, max=4,723, avg=45.14, stdev=41.22 bw (KiB/s) : min= 16, max=547008, per=50.66%, avg=33964.70, stdev=95190.79 write: io=1,024MiB, bw=5,574KiB/s, iops=140, runt=188116msec clat (usec): min=4, max=6,061K, avg=6993.07, stdev=135779.60 bw (KiB/s) : min= 0, max=186976, per=51.64%, avg=11514.24, stdev=31786.55 cpu : usr=1.51%, sys=1.57%, ctx=1077, majf=0, minf=841094 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=78629/26351, short=0/0 lat (usec): 4=0.01%, 10=3.01%, 20=9.30%, 50=44.66%, 100=39.71% lat (usec): 250=3.12%, 500=0.05%, 750=0.01% lat (msec): 2=0.01%, 4=0.01%, 10=0.01%, 100=0.01%, 250=0.01% lat (msec): 500=0.02%, 750=0.03%, 1000=0.03%, 2000=0.03%, >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6687 read : io=3,072MiB, bw=16,772KiB/s, iops=419, runt=187551msec clat (usec): min=5, max=1,977, avg=47.70, stdev=27.76 bw (KiB/s) : min= 11, max=491776, per=51.01%, avg=34199.22, stdev=88340.37 write: io=1,024MiB, bw=5,590KiB/s, iops=139, runt=187555msec clat (usec): min=5, max=6,225K, avg=6991.50, stdev=135267.02 bw (KiB/s) : min= 0, max=161888, per=49.10%, avg=10947.06, stdev=28810.81 cpu : usr=1.64%, sys=1.51%, ctx=1218, majf=0, minf=840812 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=78627/26250, short=0/0 lat (usec): 10=2.71%, 20=7.91%, 50=42.57%, 100=40.72%, 250=5.96% lat (usec): 500=0.01% lat (msec): 2=0.01%, 4=0.01%, 10=0.01%, 50=0.01%, 100=0.01% lat (msec): 250=0.01%, 500=0.02%, 750=0.02%, 1000=0.02%, 2000=0.04% lat (msec): >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6688 read : io=3,072MiB, bw=16,772KiB/s, iops=419, runt=187552msec clat (usec): min=3, max=30,422, avg=47.27, stdev=207.29 bw (KiB/s) : min= 14, max=538464, per=52.63%, avg=35281.55, stdev=97036.79 write: io=1,024MiB, bw=5,590KiB/s, iops=139, runt=187560msec clat (usec): min=6, max=7,317K, avg=7014.02, stdev=141515.53 bw (KiB/s) : min= 0, max=182176, per=51.46%, avg=11472.81, stdev=31968.84 cpu : usr=1.51%, sys=1.44%, ctx=1570, majf=0, minf=842073 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=78675/26170, short=0/0 lat (usec): 4=0.01%, 10=2.82%, 20=8.46%, 50=44.81%, 100=40.38% lat (usec): 250=3.36%, 500=0.02%, 750=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=0.01%, 500=0.02%, 750=0.02%, 1000=0.02% lat (msec): 2000=0.03%, >=2000=0.02% Run status group 0 (all jobs): READ: io=4,096MiB, aggrb=245MiB/s, minb=245MiB/s, maxb=245MiB/s, mint=16705msec, maxt=16705msec WRITE: io=4,096MiB, aggrb=21,649KiB/s, minb=21,649KiB/s, maxb=21,649KiB/s, mint=193741msec, maxt=193741msec Run status group 1 (all jobs): READ: io=12,288MiB, aggrb=67,039KiB/s, minb=16,759KiB/s, maxb=17,040KiB/s, mint=184601msec, maxt=187694msec WRITE: io=4,096MiB, aggrb=22,296KiB/s, minb=5,574KiB/s, maxb=5,680KiB/s, mint=184598msec, maxt=188116msec Disk stats (read/write): sda: ios=17444/63474, merge=0/1784499, ticks=196884/70215876, in_queue=70412743, util=96.05% 54.81user 38.02system 11:03.16elapsed 14%CPU (0avgtext+0avgdata 0maxresident)k 8388920inputs+23224800outputs (27major+5470419minor)pagefaults 0swaps