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=32237 read : io=4,096MiB, bw=242MiB/s, iops=6,182, runt= 16947msec clat (usec): min=10, max=217, avg=32.63, stdev=15.12 bw (KiB/s) : min= 0, max=254912, per=97.12%, avg=240386.82, stdev=42842.96 write: io=4,096MiB, bw=22,712KiB/s, iops=567, runt=184673msec clat (usec): min=13, max=1,191K, avg=1523.48, stdev=11713.32 bw (KiB/s) : min= 0, max=85760, per=102.31%, avg=23236.03, stdev=16694.09 cpu : usr=19.20%, sys=4.01%, ctx=18595, majf=1, minf=2106436 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=104778/104778, short=0/0 lat (usec): 20=21.93%, 50=46.81%, 100=22.87%, 250=0.54%, 500=0.18% lat (usec): 750=0.23%, 1000=0.28% lat (msec): 2=1.98%, 4=3.21%, 10=0.63%, 20=0.65%, 50=0.37% lat (msec): 100=0.12%, 250=0.19%, 500=0.01%, 750=0.01%, 2000=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=32448 read : io=3,072MiB, bw=17,445KiB/s, iops=435, runt=180316msec clat (usec): min=3, max=281, avg=35.29, stdev=18.51 bw (KiB/s) : min= 21, max=679200, per=42.05%, avg=28268.29, stdev=100928.07 write: io=1,024MiB, bw=5,815KiB/s, iops=145, runt=180309msec clat (usec): min=5, max=5,031K, avg=6769.06, stdev=98702.84 bw (KiB/s) : min= 0, max=227712, per=40.97%, avg=9181.09, stdev=33165.51 cpu : usr=1.65%, sys=0.89%, ctx=1635, majf=0, minf=841760 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=78499/26190, short=0/0 lat (usec): 4=0.01%, 10=2.43%, 20=21.01%, 50=47.41%, 100=28.68% lat (usec): 250=0.31%, 500=0.01% lat (msec): 50=0.01%, 100=0.01%, 250=0.01%, 500=0.02%, 750=0.02% lat (msec): 1000=0.03%, 2000=0.07%, >=2000=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=32449 read : io=3,072MiB, bw=17,501KiB/s, iops=437, runt=179740msec clat (usec): min=3, max=6,322, avg=35.35, stdev=29.14 bw (KiB/s) : min= 34, max=675392, per=45.57%, avg=30637.78, stdev=105822.25 write: io=1,024MiB, bw=5,603KiB/s, iops=140, runt=187134msec clat (usec): min=4, max=6,769K, avg=7012.98, stdev=109764.61 bw (KiB/s) : min= 0, max=222592, per=41.94%, avg=9398.63, stdev=33519.00 cpu : usr=1.60%, sys=0.89%, ctx=1600, majf=0, minf=841088 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=78554/26251, short=0/0 lat (usec): 4=0.01%, 10=2.62%, 20=20.68%, 50=47.21%, 100=29.01% lat (usec): 250=0.32%, 500=0.01% lat (msec): 10=0.01%, 100=0.01%, 250=0.01%, 500=0.02%, 750=0.03% lat (msec): 1000=0.03%, 2000=0.06%, >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=32450 read : io=3,072MiB, bw=17,588KiB/s, iops=439, runt=178851msec clat (usec): min=2, max=16,798, avg=35.18, stdev=73.86 bw (KiB/s) : min= 10, max=678720, per=46.08%, avg=30979.94, stdev=105951.42 write: io=1,024MiB, bw=5,815KiB/s, iops=146, runt=180303msec clat (usec): min=6, max=4,548K, avg=6709.56, stdev=100330.08 bw (KiB/s) : min= 0, max=230496, per=44.01%, avg=9863.66, stdev=34654.47 cpu : usr=1.63%, sys=1.00%, ctx=1515, majf=0, minf=841719 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=78620/26419, short=0/0 lat (usec): 4=0.01%, 10=2.72%, 20=21.45%, 50=48.07%, 100=27.31% lat (usec): 250=0.29%, 500=0.01% lat (msec): 4=0.01%, 10=0.01%, 20=0.01%, 100=0.01%, 250=0.01% lat (msec): 500=0.03%, 750=0.03%, 1000=0.02%, 2000=0.06%, >=2000=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=32451 read : io=3,072MiB, bw=16,807KiB/s, iops=419, runt=187160msec clat (usec): min=3, max=14,123, avg=36.81, stdev=130.19 bw (KiB/s) : min= 8, max=646592, per=42.82%, avg=28785.53, stdev=93744.25 write: io=1,024MiB, bw=5,602KiB/s, iops=139, runt=187162msec clat (usec): min=4, max=6,806K, avg=7029.74, stdev=110781.88 bw (KiB/s) : min= 0, max=219392, per=40.96%, avg=9178.97, stdev=30800.84 cpu : usr=1.58%, sys=0.89%, ctx=1838, majf=0, minf=840495 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=78576/26176, short=0/0 lat (usec): 4=0.01%, 10=2.58%, 20=21.30%, 50=47.36%, 100=27.86% lat (usec): 250=0.71%, 500=0.02%, 750=0.01% lat (msec): 4=0.01%, 10=0.01%, 20=0.01%, 100=0.01%, 250=0.01% lat (msec): 500=0.02%, 750=0.02%, 1000=0.02%, 2000=0.06%, >=2000=0.02% Run status group 0 (all jobs): READ: io=4,096MiB, aggrb=242MiB/s, minb=242MiB/s, maxb=242MiB/s, mint=16947msec, maxt=16947msec WRITE: io=4,096MiB, aggrb=22,712KiB/s, minb=22,712KiB/s, maxb=22,712KiB/s, mint=184673msec, maxt=184673msec Run status group 1 (all jobs): READ: io=12,288MiB, aggrb=67,230KiB/s, minb=16,807KiB/s, maxb=17,588KiB/s, mint=178851msec, maxt=187160msec WRITE: io=4,096MiB, aggrb=22,410KiB/s, minb=5,602KiB/s, maxb=5,815KiB/s, mint=180303msec, maxt=187162msec Disk stats (read/write): sda: ios=17440/62394, merge=0/1780422, ticks=308130/93989379, in_queue=94297444, util=96.33% 55.51user 37.13system 11:10.97elapsed 13%CPU (0avgtext+0avgdata 0maxresident)k 8390808inputs+23235640outputs (8major+5475980minor)pagefaults 0swaps