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=6311 read : io=4,096MiB, bw=244MiB/s, iops=6,246, runt= 16759msec clat (usec): min=10, max=232, avg=30.46, stdev=13.89 bw (KiB/s) : min= 0, max=253824, per=97.12%, avg=243072.94, stdev=43187.09 write: io=4,096MiB, bw=21,358KiB/s, iops=533, runt=196374msec clat (usec): min=14, max=5,347K, avg=1609.04, stdev=26940.46 bw (KiB/s) : min= 0, max=46016, per=115.69%, avg=24708.15, stdev=18854.28 cpu : usr=20.77%, sys=2.63%, ctx=18427, majf=0, minf=2099252 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=104687/104687, short=0/0 lat (usec): 20=21.44%, 50=48.15%, 100=22.03%, 250=0.07%, 500=0.04% lat (usec): 750=0.04%, 1000=0.04% lat (msec): 2=0.65%, 4=4.40%, 10=2.71%, 20=0.11%, 50=0.11% 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=6621 read : io=3,072MiB, bw=17,265KiB/s, iops=432, runt=182203msec clat (usec): min=4, max=448K, avg=54.48, stdev=1596.74 bw (KiB/s) : min= 18, max=481472, per=53.91%, avg=34361.06, stdev=90660.09 write: io=1,024MiB, bw=5,754KiB/s, iops=144, runt=182208msec clat (usec): min=5, max=5,569K, avg=6751.73, stdev=123411.33 bw (KiB/s) : min= 0, max=160512, per=52.11%, avg=11069.96, stdev=29684.00 cpu : usr=1.71%, sys=1.61%, ctx=1216, majf=0, minf=843343 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=78728/26309, short=0/0 lat (usec): 10=2.74%, 20=6.97%, 50=42.55%, 100=40.54%, 250=7.04% lat (usec): 500=0.01% lat (msec): 2=0.01%, 4=0.01%, 20=0.01%, 50=0.01%, 100=0.01% lat (msec): 250=0.01%, 500=0.03%, 750=0.03%, 1000=0.02%, 2000=0.04% lat (msec): >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6622 read : io=3,072MiB, bw=15,933KiB/s, iops=398, runt=197436msec clat (usec): min=3, max=23,926, avg=46.14, stdev=142.92 bw (KiB/s) : min= 15, max=527232, per=60.83%, avg=38768.02, stdev=105952.34 write: io=1,024MiB, bw=5,310KiB/s, iops=132, runt=197440msec clat (usec): min=5, max=10,217K, avg=7371.94, stdev=155345.11 bw (KiB/s) : min= 0, max=174560, per=57.34%, avg=12180.77, stdev=33958.90 cpu : usr=1.44%, sys=1.41%, ctx=1279, majf=0, minf=841819 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=78649/26250, short=0/0 lat (usec): 4=0.01%, 10=3.08%, 20=8.62%, 50=45.53%, 100=39.71% lat (usec): 250=2.89%, 500=0.02% 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=0.03%, 1000=0.02% lat (msec): 2000=0.02%, >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6623 read : io=3,072MiB, bw=16,944KiB/s, iops=423, runt=185652msec clat (usec): min=5, max=21,048, avg=46.70, stdev=85.70 bw (KiB/s) : min= 13, max=505952, per=60.47%, avg=38536.16, stdev=101047.03 write: io=1,024MiB, bw=5,648KiB/s, iops=141, runt=185640msec clat (usec): min=6, max=7,432K, avg=6921.08, stdev=143056.30 bw (KiB/s) : min= 0, max=173184, per=60.44%, avg=12839.99, stdev=33699.43 cpu : usr=1.65%, sys=1.44%, ctx=1188, majf=0, minf=839055 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=78631/26254, short=0/0 lat (usec): 10=2.80%, 20=8.82%, 50=43.56%, 100=40.25%, 250=4.42% lat (usec): 500=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=0.01%, 750=0.02%, 1000=0.02%, 2000=0.03% lat (msec): >=2000=0.03% stresser: (groupid=1, jobs=1): err= 0: pid=6624 read : io=3,072MiB, bw=15,935KiB/s, iops=398, runt=197402msec clat (usec): min=3, max=33,156, avg=46.27, stdev=148.87 bw (KiB/s) : min= 2, max=535520, per=56.53%, avg=36024.96, stdev=101792.36 write: io=1,024MiB, bw=5,311KiB/s, iops=132, runt=197398msec clat (usec): min=6, max=10,440K, avg=7396.44, stdev=157025.01 bw (KiB/s) : min= 0, max=178816, per=54.90%, avg=11661.70, stdev=33195.73 cpu : usr=1.44%, sys=1.50%, ctx=1434, majf=0, minf=840644 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=78630/26157, short=0/0 lat (usec): 4=0.01%, 10=3.22%, 20=8.07%, 50=45.41%, 100=39.32% lat (usec): 250=3.77%, 500=0.06%, 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=0.03%, 2000=0.03% lat (msec): >=2000=0.02% Run status group 0 (all jobs): READ: io=4,096MiB, aggrb=244MiB/s, minb=244MiB/s, maxb=244MiB/s, mint=16759msec, maxt=16759msec WRITE: io=4,096MiB, aggrb=21,358KiB/s, minb=21,358KiB/s, maxb=21,358KiB/s, mint=196374msec, maxt=196374msec Run status group 1 (all jobs): READ: io=12,288MiB, aggrb=63,732KiB/s, minb=15,933KiB/s, maxb=17,265KiB/s, mint=182203msec, maxt=197436msec WRITE: io=4,096MiB, aggrb=21,243KiB/s, minb=5,310KiB/s, maxb=5,754KiB/s, mint=182208msec, maxt=197440msec Disk stats (read/write): sda: ios=17444/64241, merge=0/1785399, ticks=199709/71763734, in_queue=71963425, util=96.10% 57.96user 38.10system 11:05.12elapsed 14%CPU (0avgtext+0avgdata 0maxresident)k 8388920inputs+23234056outputs (27major+5468549minor)pagefaults 0swaps