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=6361 read : io=4,096MiB, bw=245MiB/s, iops=6,273, runt= 16709msec clat (usec): min=10, max=340, avg=30.29, stdev=14.05 bw (KiB/s) : min= 0, max=254208, per=97.13%, avg=243809.88, stdev=43279.04 write: io=4,096MiB, bw=20,241KiB/s, iops=505, runt=207214msec clat (usec): min=14, max=870K, avg=1738.59, stdev=18034.14 bw (KiB/s) : min= 0, max=47072, per=112.52%, avg=22775.75, stdev=20159.96 cpu : usr=19.17%, sys=2.48%, ctx=18270, majf=0, minf=2099290 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=104817/104817, short=0/0 lat (usec): 20=22.76%, 50=48.99%, 100=19.89%, 250=0.04%, 500=0.05% lat (usec): 750=0.03%, 1000=0.03% lat (msec): 2=0.60%, 4=4.29%, 10=3.00%, 20=0.03%, 50=0.05% lat (msec): 100=0.03%, 250=0.11%, 500=0.08%, 750=0.01%, 1000=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=6671 read : io=3,072MiB, bw=16,968KiB/s, iops=425, runt=185383msec clat (usec): min=3, max=34,313, avg=48.14, stdev=191.09 bw (KiB/s) : min= 29, max=497408, per=49.25%, avg=32519.73, stdev=90667.23 write: io=1,024MiB, bw=5,634KiB/s, iops=141, runt=186101msec clat (usec): min=5, max=5,964K, avg=6929.60, stdev=120157.94 bw (KiB/s) : min= 0, max=162240, per=47.04%, avg=10352.83, stdev=29178.43 cpu : usr=1.65%, sys=1.59%, ctx=1262, majf=0, minf=843680 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=78842/26268, short=0/0 lat (usec): 4=0.01%, 10=3.02%, 20=9.15%, 50=41.66%, 100=40.38% lat (usec): 250=5.60%, 500=0.02% lat (msec): 2=0.01%, 4=0.01%, 10=0.01%, 50=0.01%, 100=0.01% lat (msec): 250=0.01%, 500=0.03%, 750=0.03%, 1000=0.03%, 2000=0.03% lat (msec): >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6672 read : io=3,072MiB, bw=16,898KiB/s, iops=422, runt=186158msec clat (usec): min=2, max=47,110, avg=46.52, stdev=239.64 bw (KiB/s) : min= 2, max=541632, per=63.07%, avg=41641.19, stdev=111498.67 write: io=1,024MiB, bw=5,502KiB/s, iops=137, runt=190552msec clat (usec): min=5, max=9,165K, avg=7132.57, stdev=154607.23 bw (KiB/s) : min= 0, max=178976, per=58.53%, avg=12880.59, stdev=35085.27 cpu : usr=1.49%, sys=1.42%, ctx=1181, majf=0, minf=840611 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=78645/26162, short=0/0 lat (usec): 4=0.01%, 10=3.23%, 20=9.26%, 50=44.47%, 100=39.88% lat (usec): 250=3.00%, 500=0.01%, 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=0.01%, 500=0.02%, 750=0.02%, 1000=0.02% lat (msec): 2000=0.03%, >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6673 read : io=3,072MiB, bw=16,505KiB/s, iops=413, runt=190582msec clat (usec): min=5, max=32,053, avg=48.22, stdev=142.44 bw (KiB/s) : min= 34, max=501184, per=54.49%, avg=35978.69, stdev=97295.55 write: io=1,024MiB, bw=5,503KiB/s, iops=137, runt=190543msec clat (usec): min=5, max=6,861K, avg=7114.54, stdev=141005.83 bw (KiB/s) : min= 0, max=172160, per=54.45%, avg=11983.76, stdev=32721.71 cpu : usr=1.59%, sys=1.48%, ctx=1225, majf=0, minf=841870 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=78798/26209, short=0/0 lat (usec): 10=2.76%, 20=8.02%, 50=42.85%, 100=40.85%, 250=5.37% lat (usec): 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=0.02%, 1000=0.02% lat (msec): 2000=0.04%, >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6674 read : io=3,072MiB, bw=16,507KiB/s, iops=412, runt=190564msec clat (usec): min=4, max=3,415, avg=44.65, stdev=30.44 bw (KiB/s) : min= 4, max=554400, per=60.92%, avg=40224.01, stdev=112875.55 write: io=1,024MiB, bw=5,501KiB/s, iops=137, runt=190581msec clat (usec): min=5, max=6,608K, avg=7121.21, stdev=145654.22 bw (KiB/s) : min= 0, max=187264, per=57.29%, avg=12609.06, stdev=36473.15 cpu : usr=1.43%, sys=1.52%, ctx=1473, majf=0, minf=842625 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=78638/26228, short=0/0 lat (usec): 10=2.95%, 20=9.59%, 50=43.95%, 100=40.01%, 250=3.31% lat (usec): 500=0.06%, 750=0.01%, 1000=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=0.02%, 1000=0.02%, 2000=0.03% lat (msec): >=2000=0.03% Run status group 0 (all jobs): READ: io=4,096MiB, aggrb=245MiB/s, minb=245MiB/s, maxb=245MiB/s, mint=16709msec, maxt=16709msec WRITE: io=4,096MiB, aggrb=20,241KiB/s, minb=20,241KiB/s, maxb=20,241KiB/s, mint=207214msec, maxt=207214msec Run status group 1 (all jobs): READ: io=12,288MiB, aggrb=66,024KiB/s, minb=16,505KiB/s, maxb=16,968KiB/s, mint=185383msec, maxt=190582msec WRITE: io=4,096MiB, aggrb=22,008KiB/s, minb=5,502KiB/s, maxb=5,634KiB/s, mint=186101msec, maxt=190581msec Disk stats (read/write): sda: ios=17443/63619, merge=0/1786321, ticks=223976/67596262, in_queue=67820228, util=96.06% 54.75user 38.93system 11:02.41elapsed 14%CPU (0avgtext+0avgdata 0maxresident)k 8388912inputs+23233016outputs (27major+5472521minor)pagefaults 0swaps