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=2626 read : io=4,096MiB, bw=247MiB/s, iops=6,328, runt= 16591msec clat (usec): min=10, max=167, avg=29.16, stdev=13.29 bw (KiB/s) : min= 0, max=255392, per=97.10%, avg=245468.24, stdev=43557.69 write: io=4,096MiB, bw=21,591KiB/s, iops=540, runt=194261msec clat (usec): min=13, max=961K, avg=1609.63, stdev=16948.15 bw (KiB/s) : min= 0, max=66560, per=108.89%, avg=23510.96, stdev=19549.77 cpu : usr=19.96%, sys=2.51%, ctx=17870, majf=0, minf=2099256 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=104988/104988, short=0/0 lat (usec): 20=23.06%, 50=51.78%, 100=16.78%, 250=0.41%, 500=0.07% lat (usec): 750=0.02%, 1000=0.02% lat (msec): 2=2.25%, 4=4.38%, 10=0.45%, 20=0.25%, 50=0.20% lat (msec): 100=0.17%, 250=0.14%, 500=0.02%, 750=0.01%, 1000=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=2816 read : io=3,072MiB, bw=8,948KiB/s, iops=223, runt=351540msec clat (usec): min=3, max=10,759, avg=44.11, stdev=50.56 bw (KiB/s) : min= 9, max=448256, per=38.35%, avg=13728.22, stdev=41507.53 write: io=1,024MiB, bw=2,982KiB/s, iops=74, runt=351541msec clat (usec): min=6, max=5,012K, avg=13241.94, stdev=148858.74 bw (KiB/s) : min= 0, max=147648, per=36.61%, avg=4368.27, stdev=13268.94 cpu : usr=0.81%, sys=0.94%, ctx=5744, majf=0, minf=849093 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=78573/26262, short=0/0 lat (usec): 4=0.01%, 10=3.39%, 20=12.00%, 50=41.72%, 100=38.34% lat (usec): 250=4.22%, 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=0.01%, 500=0.02%, 750=0.07%, 1000=0.04% lat (msec): 2000=0.10%, >=2000=0.04% stresser: (groupid=1, jobs=1): err= 0: pid=2817 read : io=3,072MiB, bw=9,019KiB/s, iops=225, runt=348759msec clat (usec): min=3, max=20,751, avg=44.36, stdev=115.60 bw (KiB/s) : min= 6, max=536544, per=38.22%, avg=13679.64, stdev=45811.79 write: io=1,024MiB, bw=3,004KiB/s, iops=75, runt=348983msec clat (usec): min=3, max=5,009K, avg=13099.62, stdev=149100.43 bw (KiB/s) : min= 0, max=181536, per=35.82%, avg=4273.19, stdev=14777.15 cpu : usr=0.78%, sys=0.91%, ctx=4846, majf=0, minf=846830 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=78754/26350, short=0/0 lat (usec): 4=0.01%, 10=3.25%, 20=11.59%, 50=43.84%, 100=38.41% lat (usec): 250=2.47%, 500=0.07%, 750=0.01%, 1000=0.01% lat (msec): 2=0.05%, 4=0.01%, 10=0.01%, 20=0.01%, 50=0.01% lat (msec): 100=0.01%, 250=0.02%, 500=0.02%, 750=0.05%, 1000=0.05% lat (msec): 2000=0.10%, >=2000=0.04% stresser: (groupid=1, jobs=1): err= 0: pid=2818 read : io=3,072MiB, bw=9,245KiB/s, iops=230, runt=340241msec clat (usec): min=5, max=13,656, avg=43.41, stdev=55.59 bw (KiB/s) : min= 16, max=482688, per=37.25%, avg=13333.68, stdev=44203.10 write: io=1,024MiB, bw=3,054KiB/s, iops=76, runt=343309msec clat (usec): min=6, max=3,830K, avg=12945.08, stdev=142645.83 bw (KiB/s) : min= 0, max=164096, per=35.05%, avg=4182.19, stdev=14336.67 cpu : usr=0.83%, sys=0.94%, ctx=4507, majf=0, minf=848512 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=78498/26234, short=0/0 lat (usec): 10=3.08%, 20=11.96%, 50=42.77%, 100=39.23%, 250=2.63% lat (usec): 500=0.04% lat (msec): 2=0.01%, 4=0.01%, 20=0.01%, 50=0.01%, 100=0.01% lat (msec): 250=0.02%, 500=0.02%, 750=0.06%, 1000=0.05%, 2000=0.10% lat (msec): >=2000=0.04% stresser: (groupid=1, jobs=1): err= 0: pid=2819 read : io=3,072MiB, bw=9,021KiB/s, iops=224, runt=348690msec clat (usec): min=5, max=10,035, avg=42.28, stdev=51.01 bw (KiB/s) : min= 11, max=522240, per=36.48%, avg=13058.20, stdev=47416.93 write: io=1,024MiB, bw=3,007KiB/s, iops=75, runt=348683msec clat (usec): min=6, max=4,720K, avg=13139.06, stdev=156818.89 bw (KiB/s) : min= 0, max=179488, per=35.56%, avg=4242.17, stdev=15745.15 cpu : usr=0.78%, sys=0.83%, ctx=5241, majf=0, minf=848110 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=78407/26257, short=0/0 lat (usec): 10=3.29%, 20=12.80%, 50=43.24%, 100=38.43%, 250=1.88% lat (usec): 500=0.06%, 750=0.01%, 1000=0.01% lat (msec): 2=0.03%, 4=0.01%, 20=0.01%, 50=0.01%, 100=0.01% lat (msec): 250=0.02%, 500=0.02%, 750=0.04%, 1000=0.03%, 2000=0.11% lat (msec): >=2000=0.04% Run status group 0 (all jobs): READ: io=4,096MiB, aggrb=247MiB/s, minb=247MiB/s, maxb=247MiB/s, mint=16591msec, maxt=16591msec WRITE: io=4,096MiB, aggrb=21,591KiB/s, minb=21,591KiB/s, maxb=21,591KiB/s, mint=194261msec, maxt=194261msec Run status group 1 (all jobs): READ: io=12,288MiB, aggrb=35,793KiB/s, minb=8,948KiB/s, maxb=9,245KiB/s, mint=340241msec, maxt=351540msec WRITE: io=4,096MiB, aggrb=11,931KiB/s, minb=2,982KiB/s, maxb=3,054KiB/s, mint=343309msec, maxt=351541msec Disk stats (read/write): sda: ios=17444/78727, merge=0/1876680, ticks=209075/69381599, in_queue=69590647, util=96.84% 54.42user 37.30system 12:38.74elapsed 12%CPU (0avgtext+0avgdata 0maxresident)k 8390648inputs+24134344outputs (35major+5496594minor)pagefaults 0swaps