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=6385 read : io=4,096MiB, bw=243MiB/s, iops=6,237, runt= 16822msec clat (usec): min=11, max=263, avg=31.05, stdev=14.17 bw (KiB/s) : min= 0, max=252416, per=97.14%, avg=242204.24, stdev=42984.40 write: io=4,096MiB, bw=21,053KiB/s, iops=526, runt=199223msec clat (usec): min=15, max=5,645K, avg=1656.51, stdev=24286.27 bw (KiB/s) : min= 0, max=47008, per=114.43%, avg=24090.83, stdev=19078.53 cpu : usr=19.66%, sys=2.66%, ctx=18334, majf=0, minf=2099254 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=104928/104928, short=0/0 lat (usec): 20=21.59%, 50=47.91%, 100=22.15%, 250=0.06%, 500=0.04% lat (usec): 750=0.05%, 1000=0.03% lat (msec): 2=0.59%, 4=4.28%, 10=2.82%, 20=0.14%, 50=0.11% lat (msec): 100=0.12%, 250=0.04%, 500=0.07%, 750=0.01%, 1000=0.01% lat (msec): >=2000=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=6695 read : io=3,072MiB, bw=17,056KiB/s, iops=426, runt=184435msec clat (usec): min=3, max=25,122, avg=48.68, stdev=117.47 bw (KiB/s) : min= 8, max=493216, per=54.25%, avg=35687.48, stdev=95088.76 write: io=1,024MiB, bw=5,686KiB/s, iops=142, runt=184414msec clat (usec): min=6, max=6,584K, avg=6864.79, stdev=132048.43 bw (KiB/s) : min= 0, max=168288, per=53.39%, avg=11709.68, stdev=31569.06 cpu : usr=1.67%, sys=1.57%, ctx=1200, majf=0, minf=841332 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=78619/26269, short=0/0 lat (usec): 4=0.01%, 10=2.68%, 20=7.27%, 50=43.34%, 100=40.86% lat (usec): 250=5.69%, 500=0.01%, 750=0.01%, 1000=0.01% lat (msec): 4=0.01%, 10=0.01%, 20=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=6696 read : io=3,072MiB, bw=17,414KiB/s, iops=435, runt=180638msec clat (usec): min=3, max=54,108, avg=47.50, stdev=284.90 bw (KiB/s) : min= 8, max=542944, per=56.72%, avg=37314.69, stdev=102917.11 write: io=1,024MiB, bw=5,805KiB/s, iops=145, runt=180626msec clat (usec): min=6, max=7,307K, avg=6740.94, stdev=137284.93 bw (KiB/s) : min= 0, max=179168, per=55.15%, avg=12095.28, stdev=33532.36 cpu : usr=1.57%, sys=1.51%, ctx=1306, majf=0, minf=840887 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=78604/26201, short=0/0 lat (usec): 4=0.01%, 10=3.34%, 20=8.81%, 50=44.99%, 100=39.96% lat (usec): 250=2.75%, 500=0.01%, 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=0.01%, 500=0.02%, 750=0.02%, 1000=0.01% lat (msec): 2000=0.03%, >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6697 read : io=3,072MiB, bw=16,446KiB/s, iops=411, runt=191273msec clat (usec): min=5, max=70,898, avg=46.63, stdev=295.31 bw (KiB/s) : min= 10, max=542656, per=55.45%, avg=36480.93, stdev=106696.42 write: io=1,024MiB, bw=5,482KiB/s, iops=136, runt=191249msec clat (usec): min=6, max=9,091K, avg=7164.73, stdev=147396.88 bw (KiB/s) : min= 0, max=184192, per=54.79%, avg=12016.78, stdev=35549.82 cpu : usr=1.44%, sys=1.60%, ctx=1400, majf=0, minf=841610 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=78716/26136, short=0/0 lat (usec): 10=3.13%, 20=8.17%, 50=45.37%, 100=39.82%, 250=3.32% lat (usec): 500=0.05%, 750=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=0.03%, 1000=0.02%, 2000=0.03% lat (msec): >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6698 read : io=3,072MiB, bw=17,003KiB/s, iops=425, runt=185006msec clat (usec): min=5, max=54,050, avg=50.16, stdev=261.75 bw (KiB/s) : min= 2, max=495808, per=52.94%, avg=34828.44, stdev=87677.86 write: io=1,024MiB, bw=5,667KiB/s, iops=141, runt=185011msec clat (usec): min=5, max=7,010K, avg=6906.06, stdev=140547.95 bw (KiB/s) : min= 0, max=160736, per=51.56%, avg=11307.21, stdev=28309.04 cpu : usr=1.70%, sys=1.56%, ctx=1072, majf=0, minf=843748 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=78728/26175, short=0/0 lat (usec): 10=2.52%, 20=6.99%, 50=43.63%, 100=41.31%, 250=5.40% lat (usec): 500=0.01%, 750=0.01% lat (msec): 10=0.01%, 20=0.01%, 50=0.01%, 100=0.01%, 250=0.01% lat (msec): 500=0.02%, 750=0.03%, 1000=0.03%, 2000=0.02%, >=2000=0.02% Run status group 0 (all jobs): READ: io=4,096MiB, aggrb=244MiB/s, minb=244MiB/s, maxb=244MiB/s, mint=16822msec, maxt=16822msec WRITE: io=4,096MiB, aggrb=21,053KiB/s, minb=21,053KiB/s, maxb=21,053KiB/s, mint=199223msec, maxt=199223msec Run status group 1 (all jobs): READ: io=12,288MiB, aggrb=65,785KiB/s, minb=16,446KiB/s, maxb=17,414KiB/s, mint=180638msec, maxt=191273msec WRITE: io=4,096MiB, aggrb=21,931KiB/s, minb=5,482KiB/s, maxb=5,805KiB/s, mint=180626msec, maxt=191249msec Disk stats (read/write): sda: ios=17443/64572, merge=0/1783748, ticks=206734/71792542, in_queue=71999269, util=96.07% 55.58user 38.15system 11:09.28elapsed 14%CPU (0avgtext+0avgdata 0maxresident)k 8388912inputs+23221496outputs (27major+5471274minor)pagefaults 0swaps