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=6390 read : io=4,096MiB, bw=244MiB/s, iops=6,239, runt= 16788msec clat (usec): min=10, max=230, avg=30.91, stdev=14.13 bw (KiB/s) : min= 0, max=253536, per=97.14%, avg=242695.53, stdev=43134.56 write: io=4,096MiB, bw=14,741KiB/s, iops=368, runt=284531msec clat (usec): min=14, max=5,589K, avg=2478.58, stdev=42406.37 bw (KiB/s) : min= 0, max=46374, per=120.38%, avg=17745.00, stdev=15769.32 cpu : usr=13.89%, sys=1.85%, ctx=18395, majf=0, 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=104756/104756, short=0/0 lat (usec): 20=21.89%, 50=48.65%, 100=21.11%, 250=0.05%, 500=0.02% lat (usec): 750=0.03%, 1000=0.02% lat (msec): 2=0.35%, 4=2.55%, 10=4.38%, 20=0.32%, 50=0.16% lat (msec): 100=0.34%, 250=0.06%, 500=0.07%, 750=0.01%, 2000=0.01% lat (msec): >=2000=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=6775 read : io=3,072MiB, bw=16,812KiB/s, iops=419, runt=187103msec clat (usec): min=5, max=7,852, avg=49.01, stdev=49.22 bw (KiB/s) : min= 10, max=474208, per=60.84%, avg=38688.32, stdev=96032.39 write: io=1,024MiB, bw=5,604KiB/s, iops=140, runt=187087msec clat (usec): min=6, max=6,389K, avg=6970.54, stdev=139925.57 bw (KiB/s) : min= 0, max=158112, per=57.40%, avg=12167.22, stdev=30953.66 cpu : usr=1.67%, sys=1.58%, ctx=1211, majf=0, minf=843258 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=78490/26246, short=0/0 lat (usec): 10=2.79%, 20=6.86%, 50=42.22%, 100=40.63%, 250=7.33% lat (usec): 500=0.02%, 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=6776 read : io=3,072MiB, bw=15,898KiB/s, iops=397, runt=197864msec clat (usec): min=3, max=571K, avg=52.92, stdev=2036.66 bw (KiB/s) : min= 8, max=549376, per=65.80%, avg=41846.18, stdev=117803.93 write: io=1,024MiB, bw=5,299KiB/s, iops=132, runt=197879msec clat (usec): min=6, max=10,009K, avg=7370.14, stdev=159400.23 bw (KiB/s) : min= 0, max=179936, per=62.49%, avg=13244.82, stdev=37780.31 cpu : usr=1.42%, sys=1.41%, ctx=1375, majf=0, minf=841430 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=78680/26245, short=0/0 lat (usec): 4=0.01%, 10=3.14%, 20=7.62%, 50=45.31%, 100=40.19% lat (usec): 250=3.59%, 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=0.01%, 750=0.01%, 1000=0.01% lat (msec): 2000=0.03%, >=2000=0.03% stresser: (groupid=1, jobs=1): err= 0: pid=6777 read : io=3,072MiB, bw=16,713KiB/s, iops=417, runt=188216msec clat (usec): min=3, max=16,337, avg=49.00, stdev=80.08 bw (KiB/s) : min= 3, max=483648, per=55.83%, avg=35505.36, stdev=94601.56 write: io=1,024MiB, bw=5,572KiB/s, iops=138, runt=188186msec clat (usec): min=6, max=6,825K, avg=7037.66, stdev=136924.28 bw (KiB/s) : min= 0, max=163936, per=55.52%, avg=11768.18, stdev=31530.24 cpu : usr=1.60%, sys=1.65%, ctx=1303, majf=0, minf=841543 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=78659/26152, short=0/0 lat (usec): 4=0.01%, 10=3.01%, 20=6.70%, 50=42.15%, 100=40.41% lat (usec): 250=7.58%, 500=0.02%, 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=0.02%, 1000=0.02% lat (msec): 2000=0.04%, >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6778 read : io=3,072MiB, bw=15,899KiB/s, iops=398, runt=197847msec clat (usec): min=3, max=55,963, avg=48.99, stdev=266.11 bw (KiB/s) : min= 7, max=528576, per=55.32%, avg=35180.50, stdev=99252.79 write: io=1,024MiB, bw=5,299KiB/s, iops=133, runt=197856msec clat (usec): min=5, max=9,578K, avg=7358.24, stdev=145531.88 bw (KiB/s) : min= 0, max=171840, per=51.32%, avg=10877.84, stdev=31537.55 cpu : usr=1.42%, sys=1.64%, ctx=1427, majf=0, minf=840599 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=78859/26321, short=0/0 lat (usec): 4=0.01%, 10=2.81%, 20=7.54%, 50=44.90%, 100=39.85% lat (usec): 250=4.69%, 500=0.05%, 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=0.03%, 750=0.02%, 1000=0.02% lat (msec): 2000=0.04%, >=2000=0.02% Run status group 0 (all jobs): READ: io=4,096MiB, aggrb=244MiB/s, minb=244MiB/s, maxb=244MiB/s, mint=16788msec, maxt=16788msec WRITE: io=4,096MiB, aggrb=14,741KiB/s, minb=14,741KiB/s, maxb=14,741KiB/s, mint=284531msec, maxt=284531msec Run status group 1 (all jobs): READ: io=12,288MiB, aggrb=63,594KiB/s, minb=15,898KiB/s, maxb=16,812KiB/s, mint=187103msec, maxt=197864msec WRITE: io=4,096MiB, aggrb=21,196KiB/s, minb=5,299KiB/s, maxb=5,604KiB/s, mint=187087msec, maxt=197879msec Disk stats (read/write): sda: ios=17444/63923, merge=0/1786238, ticks=279490/76009187, in_queue=76288666, util=96.62% 55.05user 38.79system 13:02.30elapsed 11%CPU (0avgtext+0avgdata 0maxresident)k 8388912inputs+23236808outputs (27major+5470904minor)pagefaults 0swaps