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=6182 read : io=4,096MiB, bw=246MiB/s, iops=6,288, runt= 16680msec clat (usec): min=11, max=139, avg=30.16, stdev=13.64 bw (KiB/s) : min= 0, max=253952, per=97.12%, avg=244218.35, stdev=43329.49 write: io=4,096MiB, bw=25,791KiB/s, iops=644, runt=162621msec clat (usec): min=14, max=5,276K, avg=1312.36, stdev=34346.29 bw (KiB/s) : min= 0, max=85184, per=124.18%, avg=32029.65, stdev=30040.17 cpu : usr=22.11%, sys=2.85%, ctx=18076, majf=1, minf=2099254 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=104887/104887, short=0/0 lat (usec): 20=23.13%, 50=51.60%, 100=17.09%, 250=0.60%, 500=0.41% lat (usec): 750=0.66%, 1000=0.85% lat (msec): 2=3.29%, 4=1.30%, 10=0.44%, 20=0.16%, 50=0.24% lat (msec): 100=0.17%, 250=0.03%, 500=0.03%, 750=0.01%, 1000=0.01% lat (msec): 2000=0.01%, >=2000=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=6352 read : io=3,072MiB, bw=16,722KiB/s, iops=418, runt=188119msec clat (usec): min=3, max=6,115, avg=37.57, stdev=32.41 bw (KiB/s) : min= 107, max=590464, per=50.04%, avg=33468.71, stdev=98594.76 write: io=1,024MiB, bw=5,574KiB/s, iops=139, runt=188113msec clat (usec): min=6, max=6,205K, avg=7055.78, stdev=129413.48 bw (KiB/s) : min= 0, max=197216, per=49.98%, avg=11082.57, stdev=33118.03 cpu : usr=1.66%, sys=0.76%, ctx=4757, majf=0, minf=844776 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=78788/26202, short=0/0 lat (usec): 4=0.01%, 10=2.74%, 20=17.80%, 50=46.93%, 100=31.11% lat (usec): 250=1.21%, 500=0.01%, 1000=0.01% lat (msec): 2=0.01%, 10=0.01%, 20=0.01%, 50=0.01%, 100=0.01% lat (msec): 250=0.02%, 500=0.03%, 750=0.03%, 1000=0.02%, 2000=0.02% lat (msec): >=2000=0.03% stresser: (groupid=1, jobs=1): err= 0: pid=6353 read : io=3,072MiB, bw=16,722KiB/s, iops=417, runt=188113msec clat (usec): min=3, max=13,424, avg=36.49, stdev=84.21 bw (KiB/s) : min= 54, max=678016, per=52.42%, avg=35065.02, stdev=106629.09 write: io=1,024MiB, bw=5,543KiB/s, iops=138, runt=189153msec clat (usec): min=3, max=5,877K, avg=7088.58, stdev=138760.42 bw (KiB/s) : min= 0, max=222272, per=51.42%, avg=11402.05, stdev=34763.66 cpu : usr=1.49%, sys=0.76%, ctx=4643, majf=0, minf=842232 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=78601/26236, short=0/0 lat (usec): 4=0.01%, 10=3.06%, 20=21.61%, 50=48.56%, 100=25.63% lat (usec): 250=0.69%, 500=0.11%, 750=0.01%, 1000=0.01% lat (msec): 2=0.07%, 4=0.02%, 10=0.01%, 20=0.01%, 50=0.01% lat (msec): 100=0.02%, 250=0.04%, 500=0.04%, 750=0.04%, 1000=0.01% lat (msec): 2000=0.02%, >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6354 read : io=3,072MiB, bw=17,324KiB/s, iops=433, runt=181583msec clat (usec): min=5, max=22,172, avg=37.83, stdev=91.94 bw (KiB/s) : min= 24, max=599424, per=48.69%, avg=32571.40, stdev=101038.17 write: io=1,024MiB, bw=5,595KiB/s, iops=140, runt=187382msec clat (usec): min=6, max=5,809K, avg=7001.86, stdev=122587.67 bw (KiB/s) : min= 0, max=198144, per=46.88%, avg=10395.53, stdev=32480.37 cpu : usr=1.66%, sys=0.76%, ctx=4731, majf=0, minf=844600 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=78632/26296, short=0/0 lat (usec): 10=2.80%, 20=18.11%, 50=47.05%, 100=30.82%, 250=0.99% lat (usec): 500=0.03%, 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=0.02%, 500=0.03%, 750=0.03%, 1000=0.02% lat (msec): 2000=0.04%, >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6355 read : io=3,072MiB, bw=16,781KiB/s, iops=420, runt=187460msec clat (usec): min=4, max=5,919, avg=34.57, stdev=39.58 bw (KiB/s) : min= 28, max=720000, per=57.41%, avg=38401.57, stdev=126775.49 write: io=1,024MiB, bw=5,594KiB/s, iops=139, runt=187439msec clat (usec): min=6, max=7,543K, avg=7066.18, stdev=141281.18 bw (KiB/s) : min= 0, max=242208, per=57.21%, avg=12686.19, stdev=41775.43 cpu : usr=1.52%, sys=0.74%, ctx=4954, majf=0, minf=843270 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=78817/26100, short=0/0 lat (usec): 10=2.92%, 20=21.98%, 50=48.52%, 100=25.89%, 250=0.48% lat (usec): 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=0.02%, 1000=0.02% lat (msec): 2000=0.02%, >=2000=0.03% Run status group 0 (all jobs): READ: io=4,096MiB, aggrb=246MiB/s, minb=246MiB/s, maxb=246MiB/s, mint=16680msec, maxt=16680msec WRITE: io=4,096MiB, aggrb=25,792KiB/s, minb=25,792KiB/s, maxb=25,792KiB/s, mint=162621msec, maxt=162621msec Run status group 1 (all jobs): READ: io=12,288MiB, aggrb=66,889KiB/s, minb=16,722KiB/s, maxb=17,324KiB/s, mint=181583msec, maxt=188119msec WRITE: io=4,096MiB, aggrb=22,173KiB/s, minb=5,543KiB/s, maxb=5,595KiB/s, mint=187382msec, maxt=189153msec Disk stats (read/write): sda: ios=17441/64838, merge=0/1784467, ticks=269003/66464703, in_queue=66733754, util=96.17% 54.89user 31.90system 10:37.03elapsed 13%CPU (0avgtext+0avgdata 0maxresident)k 8388912inputs+23275256outputs (2major+5478474minor)pagefaults 0swaps