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=6313 read : io=4,096MiB, bw=244MiB/s, iops=6,250, runt= 16806msec clat (usec): min=11, max=151, avg=31.18, stdev=14.20 bw (KiB/s) : min= 0, max=252320, per=97.14%, avg=242446.12, stdev=43052.15 write: io=4,096MiB, bw=21,438KiB/s, iops=536, runt=195643msec clat (usec): min=14, max=5,264K, avg=1624.13, stdev=30708.67 bw (KiB/s) : min= 0, max=47041, per=118.26%, avg=25353.14, stdev=19074.53 cpu : usr=19.69%, sys=2.63%, ctx=18576, majf=0, minf=2099258 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=105040/105040, short=0/0 lat (usec): 20=21.94%, 50=48.99%, 100=20.70%, 250=0.08%, 500=0.04% lat (usec): 750=0.05%, 1000=0.03% lat (msec): 2=0.63%, 4=4.34%, 10=2.74%, 20=0.13%, 50=0.13% lat (msec): 100=0.11%, 250=0.03%, 500=0.06%, 750=0.01%, 1000=0.01% lat (msec): >=2000=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=6618 read : io=3,072MiB, bw=16,956KiB/s, iops=424, runt=185522msec clat (usec): min=4, max=17,392, avg=48.61, stdev=67.80 bw (KiB/s) : min= 19, max=480416, per=55.12%, avg=36339.16, stdev=95919.09 write: io=1,024MiB, bw=5,497KiB/s, iops=137, runt=190742msec clat (usec): min=5, max=6,897K, avg=7119.79, stdev=141466.02 bw (KiB/s) : min= 0, max=165984, per=52.06%, avg=11442.08, stdev=31380.97 cpu : usr=1.64%, sys=1.48%, ctx=1285, majf=0, minf=840824 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=78733/26213, short=0/0 lat (usec): 10=2.18%, 20=7.38%, 50=42.70%, 100=41.47%, 250=6.14% lat (usec): 500=0.01% lat (msec): 2=0.01%, 4=0.01%, 10=0.01%, 20=0.01%, 100=0.01% lat (msec): 250=0.01%, 500=0.02%, 750=0.02%, 1000=0.02%, 2000=0.03% lat (msec): >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6619 read : io=3,072MiB, bw=17,005KiB/s, iops=425, runt=184987msec clat (usec): min=3, max=105K, avg=47.22, stdev=387.60 bw (KiB/s) : min= 5, max=538464, per=58.96%, avg=38869.45, stdev=102964.60 write: io=1,024MiB, bw=5,652KiB/s, iops=141, runt=185501msec clat (usec): min=3, max=8,890K, avg=6904.88, stdev=145496.42 bw (KiB/s) : min= 0, max=181056, per=57.23%, avg=12579.23, stdev=33808.31 cpu : usr=1.52%, sys=1.53%, ctx=1286, majf=0, minf=840750 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=78715/26283, short=0/0 lat (usec): 4=0.01%, 10=3.05%, 20=8.78%, 50=44.49%, 100=39.83% lat (usec): 250=3.66%, 500=0.05%, 750=0.01% lat (msec): 2=0.01%, 4=0.01%, 10=0.01%, 50=0.01%, 100=0.01% lat (msec): 250=0.01%, 500=0.03%, 750=0.02%, 1000=0.01%, 2000=0.03% lat (msec): >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6620 read : io=3,072MiB, bw=16,486KiB/s, iops=411, runt=190808msec clat (usec): min=4, max=20,525, avg=48.45, stdev=83.55 bw (KiB/s) : min= 26, max=494624, per=55.38%, avg=36514.15, stdev=98442.17 write: io=1,024MiB, bw=5,495KiB/s, iops=137, runt=190796msec clat (usec): min=5, max=7,399K, avg=7126.67, stdev=146959.53 bw (KiB/s) : min= 0, max=166483, per=51.41%, avg=11299.59, stdev=30031.78 cpu : usr=1.62%, sys=1.53%, ctx=1210, majf=0, minf=841784 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=78586/26200, short=0/0 lat (usec): 10=2.67%, 20=7.41%, 50=42.73%, 100=40.93%, 250=6.11% lat (usec): 500=0.02%, 1000=0.01% lat (msec): 2=0.01%, 10=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=6621 read : io=3,072MiB, bw=16,482KiB/s, iops=411, runt=190854msec clat (usec): min=5, max=16,112, avg=45.23, stdev=118.92 bw (KiB/s) : min= 10, max=537856, per=56.86%, avg=37484.86, stdev=106493.51 write: io=1,024MiB, bw=5,494KiB/s, iops=137, runt=190824msec clat (usec): min=6, max=9,308K, avg=7148.33, stdev=145521.04 bw (KiB/s) : min= 0, max=188608, per=53.95%, avg=11858.97, stdev=35537.07 cpu : usr=1.43%, sys=1.62%, ctx=1372, majf=0, minf=840480 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=78565/26162, short=0/0 lat (usec): 10=3.31%, 20=9.45%, 50=44.53%, 100=39.82%, 250=2.70% lat (usec): 500=0.03%, 750=0.01% lat (msec): 2=0.01%, 4=0.01%, 10=0.01%, 20=0.01%, 100=0.01% lat (msec): 250=0.01%, 500=0.02%, 750=0.03%, 1000=0.02%, 2000=0.03% 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=16806msec, maxt=16806msec WRITE: io=4,096MiB, aggrb=21,438KiB/s, minb=21,438KiB/s, maxb=21,438KiB/s, mint=195643msec, maxt=195643msec Run status group 1 (all jobs): READ: io=12,288MiB, aggrb=65,929KiB/s, minb=16,482KiB/s, maxb=17,005KiB/s, mint=184987msec, maxt=190854msec WRITE: io=4,096MiB, aggrb=21,980KiB/s, minb=5,495KiB/s, maxb=5,652KiB/s, mint=185501msec, maxt=190824msec Disk stats (read/write): sda: ios=17444/64353, merge=0/1786759, ticks=195143/69889224, in_queue=70084357, util=96.11% 55.06user 37.38system 11:02.99elapsed 13%CPU (0avgtext+0avgdata 0maxresident)k 8388920inputs+23240880outputs (27major+5467527minor)pagefaults 0swaps