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=20698 read : io=4,096MiB, bw=238MiB/s, iops=6,088, runt= 17214msec clat (usec): min=11, max=147, avg=35.51, stdev=16.24 bw (KiB/s) : min= 0, max=251136, per=97.19%, avg=236804.57, stdev=41576.39 write: io=4,096MiB, bw=19,065KiB/s, iops=476, runt=219993msec clat (usec): min=14, max=406K, avg=1857.45, stdev=11380.66 bw (KiB/s) : min= 0, max=66112, per=102.02%, avg=19451.01, stdev=17350.24 cpu : usr=18.27%, sys=2.53%, ctx=18517, majf=0, minf=2099255 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=104816/104816, short=0/0 lat (usec): 20=16.99%, 50=46.23%, 100=28.29%, 250=0.30%, 500=0.08% lat (usec): 750=0.17%, 1000=0.10% lat (msec): 2=2.27%, 4=3.60%, 10=0.63%, 20=0.37%, 50=0.37% lat (msec): 100=0.41%, 250=0.18%, 500=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=20912 read : io=3,072MiB, bw=8,964KiB/s, iops=224, runt=350906msec clat (usec): min=3, max=12,521, avg=45.28, stdev=63.30 bw (KiB/s) : min= 18, max=512928, per=35.25%, avg=12324.51, stdev=45093.14 write: io=1,024MiB, bw=2,965KiB/s, iops=74, runt=353569msec clat (usec): min=6, max=4,607K, avg=13256.66, stdev=142968.25 bw (KiB/s) : min= 0, max=169280, per=33.09%, avg=3856.06, stdev=14382.99 cpu : usr=0.79%, sys=1.04%, ctx=5421, majf=0, minf=851436 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=78807/26380, short=0/0 lat (usec): 4=0.01%, 10=2.79%, 20=8.81%, 50=44.18%, 100=40.45% lat (usec): 250=3.41%, 500=0.03%, 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=0.02%, 500=0.03%, 750=0.06%, 1000=0.04% lat (msec): 2000=0.11%, >=2000=0.03% stresser: (groupid=1, jobs=1): err= 0: pid=20913 read : io=3,072MiB, bw=8,741KiB/s, iops=218, runt=359869msec clat (usec): min=3, max=350K, avg=49.99, stdev=1250.57 bw (KiB/s) : min= 10, max=490688, per=34.18%, avg=11950.87, stdev=42541.12 write: io=1,024MiB, bw=2,913KiB/s, iops=72, runt=359874msec clat (usec): min=3, max=3,836K, avg=13635.70, stdev=143122.76 bw (KiB/s) : min= 0, max=161216, per=33.29%, avg=3879.33, stdev=13713.00 cpu : usr=0.80%, sys=1.03%, ctx=7531, majf=0, minf=848082 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=78516/26077, short=0/0 lat (usec): 4=0.01%, 10=2.90%, 20=9.04%, 50=43.11%, 100=40.52% lat (usec): 250=4.04%, 500=0.04%, 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=0.05%, 750=0.04%, 1000=0.05% lat (msec): 2000=0.12%, >=2000=0.03% stresser: (groupid=1, jobs=1): err= 0: pid=20914 read : io=3,072MiB, bw=9,077KiB/s, iops=227, runt=346559msec clat (usec): min=3, max=3,628, avg=45.58, stdev=46.53 bw (KiB/s) : min= 8, max=506656, per=35.34%, avg=12358.14, stdev=42434.51 write: io=1,024MiB, bw=3,025KiB/s, iops=76, runt=346560msec clat (usec): min=6, max=8,506K, avg=13009.37, stdev=145766.71 bw (KiB/s) : min= 0, max=179072, per=34.53%, avg=4024.60, stdev=14477.56 cpu : usr=0.81%, sys=0.96%, ctx=6205, majf=0, minf=848975 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=78713/26339, short=0/0 lat (usec): 4=0.01%, 10=2.78%, 20=8.92%, 50=44.09%, 100=40.26% lat (usec): 250=3.48%, 500=0.09%, 750=0.01%, 1000=0.01% lat (msec): 2=0.03%, 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=0.12%, >=2000=0.03% stresser: (groupid=1, jobs=1): err= 0: pid=20915 read : io=3,072MiB, bw=8,877KiB/s, iops=222, runt=354357msec clat (usec): min=2, max=14,033, avg=47.00, stdev=95.72 bw (KiB/s) : min= 5, max=493472, per=35.41%, avg=12381.22, stdev=39789.78 write: io=1,024MiB, bw=2,954KiB/s, iops=73, runt=354968msec clat (usec): min=5, max=3,566K, avg=13373.34, stdev=142157.36 bw (KiB/s) : min= 0, max=163520, per=33.31%, avg=3881.58, stdev=12705.09 cpu : usr=0.83%, sys=0.98%, ctx=6066, majf=0, minf=849953 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=78707/26245, short=0/0 lat (usec): 4=0.01%, 10=2.80%, 20=9.20%, 50=43.54%, 100=39.98% lat (usec): 250=4.02%, 500=0.09%, 750=0.01% lat (msec): 2=0.03%, 4=0.01%, 10=0.01%, 20=0.01%, 50=0.01% lat (msec): 100=0.01%, 250=0.02%, 500=0.03%, 750=0.05%, 1000=0.05% lat (msec): 2000=0.12%, >=2000=0.03% Run status group 0 (all jobs): READ: io=4,096MiB, aggrb=238MiB/s, minb=238MiB/s, maxb=238MiB/s, mint=17214msec, maxt=17214msec WRITE: io=4,096MiB, aggrb=19,065KiB/s, minb=19,065KiB/s, maxb=19,065KiB/s, mint=219993msec, maxt=219993msec Run status group 1 (all jobs): READ: io=12,288MiB, aggrb=34,965KiB/s, minb=8,741KiB/s, maxb=9,077KiB/s, mint=346559msec, maxt=359869msec WRITE: io=4,096MiB, aggrb=11,654KiB/s, minb=2,913KiB/s, maxb=3,025KiB/s, mint=346560msec, maxt=359874msec Disk stats (read/write): sda: ios=18424/79096, merge=14373/1876481, ticks=253265/74110111, in_queue=74363899, util=96.93% 55.26user 44.85system 13:05.59elapsed 12%CPU (0avgtext+0avgdata 0maxresident)k 8390688inputs+24152688outputs (35major+5502611minor)pagefaults 0swaps