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=6315 read : io=4,096MiB, bw=245MiB/s, iops=6,268, runt= 16735msec clat (usec): min=11, max=243, avg=30.55, stdev=14.09 bw (KiB/s) : min= 0, max=253728, per=97.13%, avg=243437.18, stdev=43192.24 write: io=4,096MiB, bw=21,295KiB/s, iops=532, runt=196961msec clat (usec): min=14, max=5,505K, avg=1637.66, stdev=27649.12 bw (KiB/s) : min= 0, max=47360, per=114.80%, avg=24446.05, stdev=18946.64 cpu : usr=19.68%, sys=2.55%, ctx=18712, 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=104905/104905, short=0/0 lat (usec): 20=23.54%, 50=51.04%, 100=17.04%, 250=0.08%, 500=0.03% lat (usec): 750=0.05%, 1000=0.02% lat (msec): 2=0.62%, 4=4.30%, 10=2.76%, 20=0.14%, 50=0.14% lat (msec): 100=0.13%, 250=0.04%, 500=0.06%, 750=0.01%, >=2000=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=6618 read : io=3,072MiB, bw=16,495KiB/s, iops=414, runt=190696msec clat (usec): min=3, max=36,668, avg=47.96, stdev=193.04 bw (KiB/s) : min= 12, max=486112, per=50.77%, avg=33402.76, stdev=92357.04 write: io=1,024MiB, bw=5,499KiB/s, iops=137, runt=190660msec clat (usec): min=6, max=8,807K, avg=7129.36, stdev=134689.56 bw (KiB/s) : min= 0, max=168096, per=48.32%, avg=10596.55, stdev=30466.95 cpu : usr=1.57%, sys=1.58%, ctx=1174, majf=0, minf=840821 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=79071/26177, short=0/0 lat (usec): 4=0.01%, 10=3.04%, 20=8.72%, 50=42.66%, 100=39.83% lat (usec): 250=5.58%, 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=0.01%, 750=0.03%, 1000=0.03% lat (msec): 2000=0.04%, >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6619 read : io=3,072MiB, bw=16,597KiB/s, iops=414, runt=189535msec clat (usec): min=2, max=236K, avg=48.91, stdev=853.65 bw (KiB/s) : min= 11, max=531584, per=59.43%, avg=39100.58, stdev=105422.61 write: io=1,024MiB, bw=5,532KiB/s, iops=138, runt=189516msec clat (usec): min=3, max=9,130K, avg=7051.38, stdev=146002.32 bw (KiB/s) : min= 0, max=176352, per=56.43%, avg=12375.72, stdev=34319.60 cpu : usr=1.48%, sys=1.49%, ctx=1231, majf=0, minf=841510 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=78629/26289, short=0/0 lat (usec): 4=0.01%, 10=3.17%, 20=8.41%, 50=45.29%, 100=39.94% lat (usec): 250=3.04%, 500=0.01%, 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=0.03%, >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6620 read : io=3,072MiB, bw=16,448KiB/s, iops=411, runt=191252msec clat (usec): min=5, max=8,861, avg=45.58, stdev=41.18 bw (KiB/s) : min= 17, max=539392, per=57.00%, avg=37499.68, stdev=106745.52 write: io=1,024MiB, bw=5,482KiB/s, iops=137, runt=191245msec clat (usec): min=5, max=15,910K, avg=7144.65, stdev=160517.04 bw (KiB/s) : min= 0, max=185568, per=54.77%, avg=12011.49, stdev=34470.80 cpu : usr=1.52%, sys=1.52%, ctx=1256, majf=0, minf=842264 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=78691/26226, short=0/0 lat (usec): 10=2.96%, 20=8.61%, 50=44.26%, 100=39.98%, 250=4.00% lat (usec): 500=0.04%, 750=0.01% lat (msec): 4=0.01%, 10=0.01%, 20=0.01%, 50=0.01%, 100=0.01% lat (msec): 250=0.01%, 500=0.03%, 750=0.02%, 1000=0.03%, 2000=0.03% lat (msec): >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6621 read : io=3,072MiB, bw=16,810KiB/s, iops=420, runt=187133msec clat (usec): min=3, max=2,248, avg=48.28, stdev=31.36 bw (KiB/s) : min= 13, max=469632, per=52.56%, avg=34577.02, stdev=89469.23 write: io=1,024MiB, bw=5,602KiB/s, iops=140, runt=187149msec clat (usec): min=5, max=6,738K, avg=6949.11, stdev=130328.55 bw (KiB/s) : min= 0, max=157504, per=50.53%, avg=11082.29, stdev=28779.38 cpu : usr=1.60%, sys=1.55%, ctx=1514, majf=0, minf=842390 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=78743/26342, short=0/0 lat (usec): 4=0.01%, 10=2.97%, 20=7.63%, 50=41.80%, 100=39.99% lat (usec): 250=7.44%, 500=0.02%, 1000=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=0.02%, 750=0.02%, 1000=0.03%, 2000=0.03% lat (msec): >=2000=0.02% Run status group 0 (all jobs): READ: io=4,096MiB, aggrb=245MiB/s, minb=245MiB/s, maxb=245MiB/s, mint=16735msec, maxt=16735msec WRITE: io=4,096MiB, aggrb=21,295KiB/s, minb=21,295KiB/s, maxb=21,295KiB/s, mint=196961msec, maxt=196961msec Run status group 1 (all jobs): READ: io=12,288MiB, aggrb=65,792KiB/s, minb=16,448KiB/s, maxb=16,810KiB/s, mint=187133msec, maxt=191252msec WRITE: io=4,096MiB, aggrb=21,932KiB/s, minb=5,482KiB/s, maxb=5,602KiB/s, mint=187149msec, maxt=191245msec Disk stats (read/write): sda: ios=17443/64629, merge=0/1785108, ticks=200903/71935296, in_queue=72136193, util=96.07% 54.89user 38.08system 11:05.79elapsed 13%CPU (0avgtext+0avgdata 0maxresident)k 8388920inputs+23232824outputs (27major+5470678minor)pagefaults 0swaps