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=6327 read : io=4,096MiB, bw=244MiB/s, iops=6,239, runt= 16799msec clat (usec): min=11, max=248, avg=31.01, stdev=14.22 bw (KiB/s) : min= 0, max=252672, per=97.14%, avg=242528.00, stdev=43075.48 write: io=4,096MiB, bw=21,798KiB/s, iops=544, runt=192411msec clat (usec): min=14, max=3,679K, avg=1597.78, stdev=19701.37 bw (KiB/s) : min= 0, max=47520, per=111.23%, avg=24244.94, stdev=19578.22 cpu : usr=19.76%, sys=2.72%, ctx=18257, 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=104811/104811, short=0/0 lat (usec): 20=21.30%, 50=48.24%, 100=22.08%, 250=0.06%, 500=0.03% lat (usec): 750=0.05%, 1000=0.03% lat (msec): 2=0.58%, 4=4.45%, 10=2.68%, 20=0.13%, 50=0.13% lat (msec): 100=0.11%, 250=0.03%, 500=0.07%, 750=0.01%, 1000=0.01% lat (msec): >=2000=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=6633 read : io=3,072MiB, bw=17,121KiB/s, iops=427, runt=183729msec clat (usec): min=5, max=30,098, avg=48.65, stdev=112.22 bw (KiB/s) : min= 48, max=481536, per=54.43%, avg=35392.17, stdev=92844.70 write: io=1,024MiB, bw=5,708KiB/s, iops=142, runt=183696msec clat (usec): min=5, max=9,758K, avg=6864.91, stdev=136507.33 bw (KiB/s) : min= 0, max=160192, per=53.36%, avg=11566.18, stdev=30459.07 cpu : usr=1.65%, sys=1.63%, ctx=1258, majf=0, minf=842038 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=78584/26166, short=0/0 lat (usec): 10=2.86%, 20=7.09%, 50=42.11%, 100=40.59%, 250=7.18% lat (usec): 500=0.01%, 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=0.02%, 750=0.02%, 1000=0.03%, 2000=0.03% lat (msec): >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6634 read : io=3,072MiB, bw=16,264KiB/s, iops=406, runt=193414msec clat (usec): min=3, max=18,524, avg=46.79, stdev=98.80 bw (KiB/s) : min= 9, max=569504, per=57.39%, avg=37317.18, stdev=106011.41 write: io=1,024MiB, bw=5,421KiB/s, iops=135, runt=193422msec clat (usec): min=5, max=9,684K, avg=7219.67, stdev=153751.89 bw (KiB/s) : min= 0, max=178464, per=56.44%, avg=12233.12, stdev=34933.72 cpu : usr=1.49%, sys=1.50%, ctx=1145, majf=0, minf=840632 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=78675/26239, short=0/0 lat (usec): 4=0.01%, 10=3.04%, 20=6.88%, 50=45.45%, 100=40.66% lat (usec): 250=3.82%, 500=0.01%, 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% stresser: (groupid=1, jobs=1): err= 0: pid=6635 read : io=3,072MiB, bw=16,256KiB/s, iops=407, runt=193501msec clat (usec): min=4, max=12,976, avg=47.57, stdev=71.01 bw (KiB/s) : min= 2, max=504928, per=54.43%, avg=35395.78, stdev=97429.56 write: io=1,024MiB, bw=5,419KiB/s, iops=135, runt=193497msec clat (usec): min=6, max=10,161K, avg=7217.16, stdev=148917.00 bw (KiB/s) : min= 0, max=169632, per=52.20%, avg=11315.83, stdev=31736.25 cpu : usr=1.63%, sys=1.44%, ctx=1183, majf=0, minf=841176 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=78812/26249, short=0/0 lat (usec): 10=2.71%, 20=7.92%, 50=43.59%, 100=40.51%, 250=5.13% lat (usec): 500=0.01%, 750=0.01%, 1000=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=0.01%, 750=0.02%, 1000=0.02%, 2000=0.04% lat (msec): >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6636 read : io=3,072MiB, bw=16,266KiB/s, iops=406, runt=193393msec clat (usec): min=3, max=21,152, avg=47.00, stdev=140.50 bw (KiB/s) : min= 50, max=529120, per=55.12%, avg=35840.54, stdev=99283.92 write: io=1,024MiB, bw=5,421KiB/s, iops=135, runt=193398msec clat (usec): min=6, max=8,711K, avg=7211.17, stdev=145418.22 bw (KiB/s) : min= 0, max=177280, per=53.76%, avg=11653.91, stdev=32643.03 cpu : usr=1.45%, sys=1.52%, ctx=1428, majf=0, minf=840454 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=78558/26258, short=0/0 lat (usec): 4=0.01%, 10=3.13%, 20=8.18%, 50=44.90%, 100=39.78% lat (usec): 250=3.83%, 500=0.04%, 750=0.01%, 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% Run status group 0 (all jobs): READ: io=4,096MiB, aggrb=244MiB/s, minb=244MiB/s, maxb=244MiB/s, mint=16799msec, maxt=16799msec WRITE: io=4,096MiB, aggrb=21,798KiB/s, minb=21,798KiB/s, maxb=21,798KiB/s, mint=192411msec, maxt=192411msec Run status group 1 (all jobs): READ: io=12,288MiB, aggrb=65,027KiB/s, minb=16,256KiB/s, maxb=17,121KiB/s, mint=183729msec, maxt=193501msec WRITE: io=4,096MiB, aggrb=21,676KiB/s, minb=5,419KiB/s, maxb=5,708KiB/s, mint=183696msec, maxt=193497msec Disk stats (read/write): sda: ios=17444/63517, merge=0/1785690, ticks=200626/71789134, in_queue=71989751, util=96.01% 54.95user 39.34system 11:03.51elapsed 14%CPU (0avgtext+0avgdata 0maxresident)k 8388912inputs+23231920outputs (27major+5467968minor)pagefaults 0swaps