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=6384 read : io=4,096MiB, bw=244MiB/s, iops=6,225, runt= 16818msec clat (usec): min=11, max=660, avg=31.00, stdev=14.41 bw (KiB/s) : min= 0, max=252160, per=97.14%, avg=242257.88, stdev=42975.53 write: io=4,096MiB, bw=13,034KiB/s, iops=325, runt=321773msec clat (usec): min=14, max=5,318K, avg=2833.91, stdev=42903.07 bw (KiB/s) : min= 0, max=46499, per=119.23%, avg=15540.16, stdev=13942.27 cpu : usr=12.52%, sys=1.60%, ctx=18706, majf=0, minf=2099255 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=104699/104699, short=0/0 lat (usec): 20=22.07%, 50=48.05%, 100=21.50%, 250=0.07%, 500=0.02% lat (usec): 750=0.02%, 1000=0.02% lat (msec): 2=0.29%, 4=2.14%, 10=4.49%, 20=0.51%, 50=0.20% lat (msec): 100=0.45%, 250=0.08%, 500=0.07%, 750=0.01%, 1000=0.01% lat (msec): >=2000=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=6800 read : io=3,072MiB, bw=17,047KiB/s, iops=425, runt=184525msec clat (usec): min=4, max=14,636, avg=47.84, stdev=87.16 bw (KiB/s) : min= 11, max=496128, per=48.80%, avg=33278.92, stdev=86451.74 write: io=1,024MiB, bw=5,682KiB/s, iops=141, runt=184519msec clat (usec): min=6, max=6,608K, avg=6889.34, stdev=135741.61 bw (KiB/s) : min= 0, max=161536, per=50.45%, avg=10861.42, stdev=28084.57 cpu : usr=1.64%, sys=1.65%, ctx=1087, majf=0, minf=841419 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=78540/26197, short=0/0 lat (usec): 10=2.61%, 20=8.04%, 50=43.43%, 100=40.53%, 250=5.23% lat (usec): 500=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=0.03%, 1000=0.02% lat (msec): 2000=0.04%, >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6801 read : io=3,072MiB, bw=17,127KiB/s, iops=428, runt=183667msec clat (usec): min=4, max=32,075, avg=45.86, stdev=149.03 bw (KiB/s) : min= 43, max=558016, per=51.50%, avg=35118.46, stdev=98241.16 write: io=1,024MiB, bw=5,382KiB/s, iops=135, runt=194806msec clat (usec): min=6, max=10,076K, avg=7250.20, stdev=146541.37 bw (KiB/s) : min= 0, max=182176, per=52.13%, avg=11223.90, stdev=31751.13 cpu : usr=1.47%, sys=1.42%, ctx=1317, majf=0, minf=839719 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=78723/26328, short=0/0 lat (usec): 10=2.91%, 20=8.06%, 50=45.83%, 100=39.99%, 250=3.05% lat (usec): 500=0.02%, 750=0.01%, 1000=0.01% lat (msec): 2=0.01%, 4=0.01%, 50=0.01%, 100=0.01%, 250=0.01% lat (msec): 500=0.02%, 750=0.02%, 1000=0.02%, 2000=0.03%, >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6802 read : io=3,072MiB, bw=17,223KiB/s, iops=430, runt=182642msec clat (usec): min=2, max=41,308, avg=48.98, stdev=181.64 bw (KiB/s) : min= 8, max=494208, per=51.05%, avg=34809.29, stdev=91108.96 write: io=1,024MiB, bw=5,742KiB/s, iops=143, runt=182620msec clat (usec): min=6, max=5,763K, avg=6818.29, stdev=133082.15 bw (KiB/s) : min= 0, max=161632, per=53.53%, avg=11524.86, stdev=29919.86 cpu : usr=1.67%, sys=1.51%, ctx=1269, majf=0, minf=842991 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=78591/26182, short=0/0 lat (usec): 4=0.01%, 10=2.49%, 20=7.36%, 50=43.70%, 100=41.04% lat (usec): 250=5.26%, 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=0.03%, >=2000=0.03% stresser: (groupid=1, jobs=1): err= 0: pid=6803 read : io=3,072MiB, bw=17,348KiB/s, iops=433, runt=181327msec clat (usec): min=4, max=6,272, avg=45.61, stdev=48.19 bw (KiB/s) : min= 2, max=545120, per=56.32%, avg=38402.17, stdev=101797.16 write: io=1,024MiB, bw=5,694KiB/s, iops=142, runt=184145msec clat (usec): min=6, max=6,313K, avg=6864.71, stdev=135768.33 bw (KiB/s) : min= 0, max=175648, per=56.26%, avg=12112.17, stdev=32366.89 cpu : usr=1.56%, sys=1.58%, ctx=1326, majf=0, minf=842122 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=78594/26256, short=0/0 lat (usec): 10=3.11%, 20=8.59%, 50=44.49%, 100=40.07%, 250=3.57% lat (usec): 500=0.03% lat (msec): 2=0.01%, 4=0.01%, 10=0.01%, 20=0.01%, 100=0.01% lat (msec): 250=0.01%, 500=0.03%, 750=0.02%, 1000=0.02%, 2000=0.04% lat (msec): >=2000=0.02% Run status group 0 (all jobs): READ: io=4,096MiB, aggrb=244MiB/s, minb=244MiB/s, maxb=244MiB/s, mint=16818msec, maxt=16818msec WRITE: io=4,096MiB, aggrb=13,034KiB/s, minb=13,034KiB/s, maxb=13,034KiB/s, mint=321773msec, maxt=321773msec Run status group 1 (all jobs): READ: io=12,288MiB, aggrb=68,191KiB/s, minb=17,047KiB/s, maxb=17,348KiB/s, mint=181327msec, maxt=184525msec WRITE: io=4,096MiB, aggrb=21,530KiB/s, minb=5,382KiB/s, maxb=5,742KiB/s, mint=182620msec, maxt=194806msec Disk stats (read/write): sda: ios=17444/63450, merge=0/1783930, ticks=315611/74143688, in_queue=74459290, util=96.86% 55.12user 38.41system 13:21.36elapsed 11%CPU (0avgtext+0avgdata 0maxresident)k 8388912inputs+23212800outputs (27major+5470427minor)pagefaults 0swaps