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=22773 read : io=4,096MiB, bw=239MiB/s, iops=6,139, runt= 17123msec clat (usec): min=11, max=153, avg=34.40, stdev=15.91 bw (KiB/s) : min= 0, max=252768, per=97.17%, avg=238042.51, stdev=41828.38 write: io=4,096MiB, bw=18,765KiB/s, iops=470, runt=223517msec clat (usec): min=14, max=778K, avg=1886.73, stdev=11916.76 bw (KiB/s) : min= 0, max=65984, per=102.60%, avg=19253.79, stdev=16714.21 cpu : usr=17.99%, sys=2.40%, ctx=18509, majf=0, minf=2099261 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=105123/105123, short=0/0 lat (usec): 20=18.29%, 50=48.56%, 100=24.66%, 250=0.26%, 500=0.08% lat (usec): 750=0.17%, 1000=0.10% lat (msec): 2=2.14%, 4=3.74%, 10=0.64%, 20=0.35%, 50=0.39% lat (msec): 100=0.42%, 250=0.17%, 500=0.01%, 750=0.01%, 1000=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=22986 read : io=3,072MiB, bw=9,143KiB/s, iops=229, runt=344039msec clat (usec): min=4, max=13,237, avg=44.53, stdev=91.30 bw (KiB/s) : min= 10, max=530720, per=36.66%, avg=13105.75, stdev=45433.25 write: io=1,024MiB, bw=3,034KiB/s, iops=76, runt=345584msec clat (usec): min=6, max=5,153K, avg=13008.89, stdev=138047.50 bw (KiB/s) : min= 0, max=173056, per=34.48%, avg=4108.58, stdev=14317.62 cpu : usr=0.81%, sys=1.00%, ctx=6206, majf=0, minf=850146 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=78810/26273, short=0/0 lat (usec): 10=2.99%, 20=11.69%, 50=43.34%, 100=39.14%, 250=2.38% lat (usec): 500=0.06%, 750=0.01%, 1000=0.01% lat (msec): 2=0.04%, 4=0.02%, 10=0.01%, 20=0.01%, 50=0.01% lat (msec): 100=0.01%, 250=0.03%, 500=0.03%, 750=0.05%, 1000=0.04% lat (msec): 2000=0.13%, >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=22987 read : io=3,072MiB, bw=9,066KiB/s, iops=226, runt=346960msec clat (usec): min=5, max=14,208, avg=45.59, stdev=89.49 bw (KiB/s) : min= 10, max=507232, per=34.68%, avg=12398.03, stdev=41262.74 write: io=1,024MiB, bw=3,022KiB/s, iops=75, runt=346960msec clat (usec): min=6, max=4,072K, avg=13104.61, stdev=141587.90 bw (KiB/s) : min= 0, max=169280, per=33.14%, avg=3949.05, stdev=13329.19 cpu : usr=0.84%, sys=0.93%, ctx=6477, majf=0, minf=845307 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=78449/26178, short=0/0 lat (usec): 10=2.99%, 20=10.35%, 50=43.38%, 100=39.49%, 250=3.34% lat (usec): 500=0.10%, 750=0.01% lat (msec): 2=0.02%, 4=0.02%, 10=0.01%, 20=0.01%, 50=0.01% lat (msec): 100=0.01%, 250=0.02%, 500=0.04%, 750=0.04%, 1000=0.05% lat (msec): 2000=0.12%, >=2000=0.03% stresser: (groupid=1, jobs=1): err= 0: pid=22988 read : io=3,072MiB, bw=9,004KiB/s, iops=225, runt=349367msec clat (usec): min=5, max=3,501, avg=43.77, stdev=29.58 bw (KiB/s) : min= 5, max=525536, per=35.82%, avg=12808.62, stdev=46313.07 write: io=1,024MiB, bw=3,001KiB/s, iops=75, runt=349353msec clat (usec): min=6, max=4,410K, avg=13181.51, stdev=139763.66 bw (KiB/s) : min= 0, max=178432, per=32.90%, avg=3921.19, stdev=14862.54 cpu : usr=0.82%, sys=1.02%, ctx=5839, majf=0, minf=850755 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=78861/26217, short=0/0 lat (usec): 10=2.67%, 20=10.66%, 50=43.82%, 100=39.73%, 250=2.74% 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=0.04%, 500=0.04%, 750=0.07%, 1000=0.05% lat (msec): 2000=0.10%, >=2000=0.03% stresser: (groupid=1, jobs=1): err= 0: pid=22989 read : io=3,072MiB, bw=8,938KiB/s, iops=224, runt=351923msec clat (usec): min=3, max=12,980, avg=44.37, stdev=67.01 bw (KiB/s) : min= 9, max=506912, per=35.47%, avg=12681.23, stdev=45623.49 write: io=1,024MiB, bw=2,979KiB/s, iops=74, runt=351931msec clat (usec): min=6, max=5,132K, avg=13265.11, stdev=147526.20 bw (KiB/s) : min= 0, max=165760, per=33.28%, avg=3966.54, stdev=14512.46 cpu : usr=0.81%, sys=0.93%, ctx=7776, majf=0, minf=849353 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=78872/26242, short=0/0 lat (usec): 4=0.01%, 10=2.74%, 20=10.49%, 50=43.67%, 100=39.62% lat (usec): 250=3.10%, 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=0.03%, 500=0.04%, 750=0.05%, 1000=0.04% lat (msec): 2000=0.11%, >=2000=0.04% Run status group 0 (all jobs): READ: io=4,096MiB, aggrb=239MiB/s, minb=239MiB/s, maxb=239MiB/s, mint=17123msec, maxt=17123msec WRITE: io=4,096MiB, aggrb=18,765KiB/s, minb=18,765KiB/s, maxb=18,765KiB/s, mint=223517msec, maxt=223517msec Run status group 1 (all jobs): READ: io=12,288MiB, aggrb=35,754KiB/s, minb=8,938KiB/s, maxb=9,143KiB/s, mint=344039msec, maxt=351923msec WRITE: io=4,096MiB, aggrb=11,917KiB/s, minb=2,979KiB/s, maxb=3,034KiB/s, mint=345584msec, maxt=351931msec Disk stats (read/write): sda: ios=18422/78948, merge=14372/1875460, ticks=256332/73283560, in_queue=73540927, util=96.92% 55.11user 44.12system 12:59.65elapsed 12%CPU (0avgtext+0avgdata 0maxresident)k 8390816inputs+24144184outputs (36major+5499713minor)pagefaults 0swaps