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=6362 read : io=4,096MiB, bw=243MiB/s, iops=6,249, runt= 16823msec clat (usec): min=10, max=393, avg=30.86, stdev=14.37 bw (KiB/s) : min= 0, max=252512, per=97.13%, avg=242180.71, stdev=43006.36 write: io=4,096MiB, bw=21,070KiB/s, iops=528, runt=199061msec clat (usec): min=14, max=953K, avg=1653.68, stdev=11555.96 bw (KiB/s) : min= 0, max=66848, per=103.99%, avg=21909.69, stdev=20872.01 cpu : usr=18.79%, sys=2.77%, ctx=22650, majf=0, minf=2099259 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=105137/105137, short=0/0 lat (usec): 20=21.98%, 50=47.90%, 100=21.71%, 250=0.39%, 500=0.11% lat (usec): 750=0.06%, 1000=0.05% lat (msec): 2=2.32%, 4=3.82%, 10=0.51%, 20=0.32%, 50=0.35% lat (msec): 100=0.33%, 250=0.14%, 500=0.01%, 1000=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=6685 read : io=3,072MiB, bw=15,622KiB/s, iops=390, runt=201362msec clat (usec): min=4, max=60,109, avg=63.34, stdev=837.08 bw (KiB/s) : min= 5, max=294112, per=44.11%, avg=27561.57, stdev=60166.25 write: io=1,024MiB, bw=5,207KiB/s, iops=130, runt=201365msec clat (usec): min=2, max=12,542K, avg=7473.49, stdev=131381.21 bw (KiB/s) : min= 0, max=98656, per=42.49%, avg=8849.28, stdev=19984.13 cpu : usr=1.40%, sys=1.36%, ctx=1903, majf=0, minf=842912 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=78633/26229, short=0/0 lat (usec): 4=0.01%, 10=3.20%, 20=9.35%, 50=44.55%, 100=39.70% lat (usec): 250=2.96%, 500=0.02% lat (msec): 2=0.01%, 4=0.01%, 10=0.01%, 20=0.01%, 50=0.05% lat (msec): 100=0.01%, 250=0.01%, 500=0.02%, 750=0.04%, 1000=0.02% lat (msec): 2000=0.05%, >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6686 read : io=3,072MiB, bw=16,611KiB/s, iops=416, runt=189374msec clat (usec): min=3, max=50,245, avg=63.48, stdev=937.41 bw (KiB/s) : min= 16, max=323808, per=42.30%, avg=26431.94, stdev=63624.14 write: io=1,024MiB, bw=5,537KiB/s, iops=138, runt=189349msec clat (usec): min=6, max=5,413K, avg=7016.50, stdev=102859.97 bw (KiB/s) : min= 0, max=102560, per=41.04%, avg=8548.33, stdev=20554.22 cpu : usr=1.39%, sys=1.40%, ctx=1962, majf=0, minf=840343 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=78921/26232, short=0/0 lat (usec): 4=0.01%, 10=3.51%, 20=14.61%, 50=42.27%, 100=38.18% lat (usec): 250=1.16%, 500=0.02%, 750=0.01% lat (msec): 2=0.01%, 4=0.01%, 10=0.01%, 20=0.01%, 50=0.06% lat (msec): 100=0.01%, 250=0.01%, 500=0.03%, 750=0.05%, 1000=0.02% lat (msec): 2000=0.05%, >=2000=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=6687 read : io=3,072MiB, bw=16,958KiB/s, iops=423, runt=185502msec clat (usec): min=5, max=68,049, avg=64.65, stdev=847.07 bw (KiB/s) : min= 26, max=273408, per=42.74%, avg=26705.91, stdev=57026.40 write: io=1,024MiB, bw=5,624KiB/s, iops=140, runt=186436msec clat (usec): min=6, max=3,117K, avg=6910.80, stdev=94887.35 bw (KiB/s) : min= 0, max=93600, per=41.08%, avg=8556.52, stdev=18432.15 cpu : usr=1.53%, sys=1.62%, ctx=1783, majf=0, minf=842566 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=78485/26191, short=0/0 lat (usec): 10=3.13%, 20=8.00%, 50=44.96%, 100=40.33%, 250=3.32% lat (usec): 500=0.01% lat (msec): 2=0.01%, 4=0.01%, 10=0.01%, 20=0.01%, 50=0.05% lat (msec): 100=0.01%, 250=0.01%, 500=0.03%, 750=0.04%, 1000=0.03% lat (msec): 2000=0.05%, >=2000=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=6688 read : io=3,072MiB, bw=16,711KiB/s, iops=417, runt=188238msec clat (usec): min=5, max=218K, avg=62.10, stdev=1126.26 bw (KiB/s) : min= 14, max=312896, per=42.10%, avg=26305.62, stdev=61121.16 write: io=1,024MiB, bw=5,571KiB/s, iops=138, runt=188208msec clat (usec): min=6, max=5,403K, avg=7028.26, stdev=99504.08 bw (KiB/s) : min= 0, max=106944, per=41.36%, avg=8614.53, stdev=20570.69 cpu : usr=1.41%, sys=1.49%, ctx=1998, majf=0, minf=840571 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=78499/26028, short=0/0 lat (usec): 10=3.37%, 20=13.19%, 50=42.22%, 100=39.23%, 250=1.72% lat (usec): 500=0.03% lat (msec): 4=0.01%, 10=0.01%, 20=0.01%, 50=0.05%, 100=0.01% lat (msec): 250=0.01%, 500=0.03%, 750=0.04%, 1000=0.03%, 2000=0.06% lat (msec): >=2000=0.01% Run status group 0 (all jobs): READ: io=4,096MiB, aggrb=243MiB/s, minb=243MiB/s, maxb=243MiB/s, mint=16823msec, maxt=16823msec WRITE: io=4,096MiB, aggrb=21,070KiB/s, minb=21,070KiB/s, maxb=21,070KiB/s, mint=199061msec, maxt=199061msec Run status group 1 (all jobs): READ: io=12,288MiB, aggrb=62,489KiB/s, minb=15,622KiB/s, maxb=16,958KiB/s, mint=185502msec, maxt=201362msec WRITE: io=4,096MiB, aggrb=20,829KiB/s, minb=5,207KiB/s, maxb=5,624KiB/s, mint=186436msec, maxt=201365msec Disk stats (read/write): sda: ios=17443/62752, merge=0/1785630, ticks=211603/83339529, in_queue=83551114, util=96.04% 54.31user 38.99system 11:17.90elapsed 13%CPU (0avgtext+0avgdata 0maxresident)k 8388912inputs+23232360outputs (27major+5470145minor)pagefaults 0swaps