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=8445 read : io=4,096MiB, bw=246MiB/s, iops=6,285, runt= 16661msec clat (usec): min=10, max=147, avg=29.87, stdev=13.41 bw (KiB/s) : min= 0, max=254208, per=97.10%, avg=244465.88, stdev=43343.01 write: io=4,096MiB, bw=19,084KiB/s, iops=476, runt=219779msec clat (usec): min=14, max=550K, avg=1858.84, stdev=11568.61 bw (KiB/s) : min= 0, max=67008, per=102.77%, avg=19612.13, stdev=19363.12 cpu : usr=18.11%, sys=2.37%, ctx=17717, majf=0, minf=2099252 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=104724/104724, short=0/0 lat (usec): 20=22.37%, 50=48.93%, 100=20.29%, 250=0.31%, 500=0.11% lat (usec): 750=0.06%, 1000=0.04% lat (msec): 2=2.16%, 4=3.86%, 10=0.52%, 20=0.34%, 50=0.42% lat (msec): 100=0.42%, 250=0.16%, 500=0.01%, 750=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=8649 read : io=3,072MiB, bw=17,325KiB/s, iops=432, runt=181566msec clat (usec): min=4, max=2,573, avg=47.38, stdev=29.52 bw (KiB/s) : min= 21, max=483168, per=44.33%, avg=28263.07, stdev=84455.65 write: io=1,024MiB, bw=5,775KiB/s, iops=143, runt=181559msec clat (usec): min=6, max=4,991K, avg=6796.64, stdev=99378.11 bw (KiB/s) : min= 0, max=164576, per=43.44%, avg=9231.65, stdev=27991.12 cpu : usr=1.72%, sys=1.57%, ctx=1662, majf=0, minf=842021 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=78530/26127, short=0/0 lat (usec): 10=2.87%, 20=7.86%, 50=42.61%, 100=40.68%, 250=5.81% lat (usec): 500=0.01%, 1000=0.01% lat (msec): 4=0.01%, 50=0.01%, 100=0.01%, 250=0.01%, 500=0.03% lat (msec): 750=0.03%, 1000=0.03%, 2000=0.06%, >=2000=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=8650 read : io=3,072MiB, bw=17,656KiB/s, iops=441, runt=178159msec clat (usec): min=5, max=7,753, avg=46.75, stdev=38.59 bw (KiB/s) : min= 20, max=496416, per=47.55%, avg=30322.22, stdev=88964.06 write: io=1,024MiB, bw=5,813KiB/s, iops=145, runt=180377msec clat (usec): min=5, max=4,162K, avg=6720.90, stdev=102422.55 bw (KiB/s) : min= 0, max=166176, per=45.15%, avg=9594.68, stdev=28590.70 cpu : usr=1.74%, sys=1.47%, ctx=1941, majf=0, minf=838017 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=78730/26250, short=0/0 lat (usec): 10=2.97%, 20=8.70%, 50=42.66%, 100=40.12%, 250=5.39% lat (usec): 500=0.01% lat (msec): 2=0.01%, 10=0.01%, 20=0.01%, 100=0.01%, 250=0.01% lat (msec): 500=0.02%, 750=0.02%, 1000=0.02%, 2000=0.06%, >=2000=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=8651 read : io=3,072MiB, bw=17,547KiB/s, iops=439, runt=179270msec clat (usec): min=4, max=28,056, avg=45.50, stdev=169.40 bw (KiB/s) : min= 6, max=556736, per=47.82%, avg=30490.84, stdev=95555.61 write: io=1,024MiB, bw=5,813KiB/s, iops=145, runt=180376msec clat (usec): min=6, max=5,219K, avg=6716.99, stdev=99456.14 bw (KiB/s) : min= 0, max=183264, per=45.34%, avg=9635.40, stdev=30585.62 cpu : usr=1.52%, sys=1.69%, ctx=1559, majf=0, minf=841175 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=78751/26279, short=0/0 lat (usec): 10=3.17%, 20=9.03%, 50=44.73%, 100=39.68%, 250=3.20% 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%, 50=0.01% lat (msec): 100=0.01%, 250=0.01%, 500=0.03%, 750=0.03%, 1000=0.03% lat (msec): 2000=0.06%, >=2000=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=8652 read : io=3,072MiB, bw=15,940KiB/s, iops=399, runt=197338msec clat (usec): min=5, max=23,007, avg=46.88, stdev=157.06 bw (KiB/s) : min= 15, max=522016, per=47.83%, avg=30495.56, stdev=91603.40 write: io=1,024MiB, bw=5,312KiB/s, iops=132, runt=197362msec clat (usec): min=6, max=16,605K, avg=7386.43, stdev=143299.48 bw (KiB/s) : min= 0, max=170080, per=43.61%, avg=9267.15, stdev=28432.58 cpu : usr=1.41%, sys=1.56%, ctx=1635, majf=0, minf=843914 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=78792/26182, short=0/0 lat (usec): 10=3.10%, 20=8.27%, 50=44.73%, 100=39.85%, 250=3.84% lat (usec): 500=0.04%, 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=0.02%, 750=0.03%, 1000=0.02% lat (msec): 2000=0.06%, >=2000=0.01% Run status group 0 (all jobs): READ: io=4,096MiB, aggrb=246MiB/s, minb=246MiB/s, maxb=246MiB/s, mint=16661msec, maxt=16661msec WRITE: io=4,096MiB, aggrb=19,084KiB/s, minb=19,084KiB/s, maxb=19,084KiB/s, mint=219779msec, maxt=219779msec Run status group 1 (all jobs): READ: io=12,288MiB, aggrb=63,763KiB/s, minb=15,940KiB/s, maxb=17,656KiB/s, mint=178159msec, maxt=197338msec WRITE: io=4,096MiB, aggrb=21,251KiB/s, minb=5,312KiB/s, maxb=5,813KiB/s, mint=180376msec, maxt=197362msec Disk stats (read/write): sda: ios=17445/62469, merge=0/1782304, ticks=238116/81057438, in_queue=81295540, util=96.26% 54.87user 40.56system 11:16.33elapsed 14%CPU (0avgtext+0avgdata 0maxresident)k 8390824inputs+23195408outputs (36major+5468851minor)pagefaults 0swaps