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=17023 read : io=4,096MiB, bw=240MiB/s, iops=6,129, runt= 17083msec clat (usec): min=11, max=188, avg=32.09, stdev=15.26 bw (KiB/s) : min= 0, max=253440, per=97.18%, avg=238602.06, stdev=48241.35 write: io=4,096MiB, bw=18,288KiB/s, iops=456, runt=229344msec clat (usec): min=13, max=800K, avg=1654.64, stdev=11051.74 bw (KiB/s) : min= 0, max=66592, per=102.01%, avg=18655.61, stdev=16769.59 cpu : usr=30.19%, sys=3.53%, ctx=16064, 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=104705/104705, short=0/0 lat (usec): 20=13.52%, 50=48.19%, 100=19.41%, 250=11.17%, 500=2.74% lat (usec): 750=0.27%, 1000=0.35% lat (msec): 2=1.93%, 4=0.64%, 10=0.43%, 20=0.31%, 50=0.47% lat (msec): 100=0.41%, 250=0.14%, 500=0.01%, 1000=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=17043 read : io=3,072MiB, bw=9,045KiB/s, iops=225, runt=347784msec clat (usec): min=7, max=60,598, avg=82.42, stdev=339.52 bw (KiB/s) : min= 12, max=273952, per=33.72%, avg=12200.22, stdev=26499.90 write: io=1,024MiB, bw=3,014KiB/s, iops=75, runt=347791msec clat (usec): min=11, max=4,359K, avg=13001.12, stdev=135558.49 bw (KiB/s) : min= 0, max=92160, per=32.13%, avg=3874.52, stdev=8726.88 cpu : usr=1.38%, sys=1.64%, ctx=5189, majf=0, minf=852274 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=78451/26214, short=0/0 lat (usec): 10=0.01%, 20=3.82%, 50=27.66%, 100=33.05%, 250=34.70% lat (usec): 500=0.34%, 750=0.02%, 1000=0.01% lat (msec): 2=0.01%, 4=0.03%, 10=0.03%, 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=17044 read : io=3,072MiB, bw=9,304KiB/s, iops=232, runt=338087msec clat (usec): min=6, max=16,062, avg=70.44, stdev=132.53 bw (KiB/s) : min= 4, max=533408, per=40.86%, avg=14781.70, stdev=54392.91 write: io=1,024MiB, bw=3,101KiB/s, iops=77, runt=338065msec clat (usec): min=7, max=9,285K, avg=12666.38, stdev=152992.08 bw (KiB/s) : min= 0, max=177152, per=38.37%, avg=4626.63, stdev=17587.89 cpu : usr=1.31%, sys=1.56%, ctx=5070, majf=0, minf=847779 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=78704/26218, short=0/0 lat (usec): 10=0.19%, 20=5.42%, 50=31.22%, 100=36.62%, 250=25.89% lat (usec): 500=0.26%, 750=0.02%, 1000=0.01% lat (msec): 2=0.02%, 4=0.02%, 10=0.02%, 20=0.01%, 50=0.01% lat (msec): 100=0.01%, 250=0.03%, 500=0.03%, 750=0.06%, 1000=0.05% lat (msec): 2000=0.10%, >=2000=0.03% stresser: (groupid=1, jobs=1): err= 0: pid=17045 read : io=3,072MiB, bw=9,096KiB/s, iops=226, runt=345831msec clat (usec): min=7, max=406K, avg=85.26, stdev=1460.86 bw (KiB/s) : min= 17, max=298240, per=34.50%, avg=12482.77, stdev=30087.13 write: io=1,024MiB, bw=3,032KiB/s, iops=75, runt=345824msec clat (usec): min=11, max=4,573K, avg=12941.44, stdev=140797.84 bw (KiB/s) : min= 0, max=104096, per=33.71%, avg=4064.67, stdev=10064.72 cpu : usr=1.44%, sys=1.65%, ctx=5836, majf=0, minf=849345 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=78486/26168, short=0/0 lat (usec): 10=0.01%, 20=3.99%, 50=27.60%, 100=31.75%, 250=35.97% lat (usec): 500=0.31%, 750=0.02% lat (msec): 2=0.01%, 4=0.01%, 10=0.02%, 20=0.01%, 50=0.01% lat (msec): 100=0.01%, 250=0.02%, 500=0.04%, 750=0.07%, 1000=0.04% lat (msec): 2000=0.10%, >=2000=0.03% stresser: (groupid=1, jobs=1): err= 0: pid=17046 read : io=3,072MiB, bw=9,520KiB/s, iops=238, runt=330426msec clat (usec): min=7, max=26,521, avg=68.95, stdev=156.75 bw (KiB/s) : min= 2, max=540352, per=44.20%, avg=15992.54, stdev=60358.86 write: io=1,024MiB, bw=3,173KiB/s, iops=79, runt=330380msec clat (usec): min=7, max=9,189K, avg=12435.07, stdev=151208.01 bw (KiB/s) : min= 0, max=183584, per=42.18%, avg=5086.79, stdev=19621.08 cpu : usr=1.32%, sys=1.46%, ctx=5726, majf=0, minf=847422 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=78689/26103, short=0/0 lat (usec): 10=0.19%, 20=5.75%, 50=31.59%, 100=37.20%, 250=24.70% lat (usec): 500=0.22%, 750=0.02%, 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=0.03%, 750=0.04%, 1000=0.04% lat (msec): 2000=0.10%, >=2000=0.03% Run status group 0 (all jobs): READ: io=4,096MiB, aggrb=240MiB/s, minb=240MiB/s, maxb=240MiB/s, mint=17083msec, maxt=17083msec WRITE: io=4,096MiB, aggrb=18,288KiB/s, minb=18,288KiB/s, maxb=18,288KiB/s, mint=229344msec, maxt=229344msec Run status group 1 (all jobs): READ: io=12,288MiB, aggrb=36,180KiB/s, minb=9,045KiB/s, maxb=9,520KiB/s, mint=330426msec, maxt=347784msec WRITE: io=4,096MiB, aggrb=12,059KiB/s, minb=3,014KiB/s, maxb=3,173KiB/s, mint=330380msec, maxt=347791msec Disk stats (read/write): sda: ios=18433/77634, merge=14363/1875160, ticks=253928/72717940, in_queue=72971812, util=96.78% 93.58user 67.00system 13:03.64elapsed 20%CPU (0avgtext+0avgdata 0maxresident)k 8389568inputs+24137696outputs (30major+5500952minor)pagefaults 0swaps