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=20636 read : io=4,096MiB, bw=247MiB/s, iops=6,328, runt= 16598msec clat (usec): min=10, max=150, avg=29.22, stdev=13.22 bw (KiB/s) : min= 0, max=255552, per=97.09%, avg=245357.18, stdev=43524.74 write: io=4,096MiB, bw=21,949KiB/s, iops=549, runt=191088msec clat (usec): min=12, max=781K, avg=1581.04, stdev=16003.43 bw (KiB/s) : min= 0, max=66528, per=107.23%, avg=23535.97, stdev=19494.13 cpu : usr=20.11%, sys=2.60%, ctx=18078, 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=105037/105037, short=0/0 lat (usec): 20=23.42%, 50=54.01%, 100=14.21%, 250=0.35%, 500=0.10% lat (usec): 750=0.02%, 1000=0.02% lat (msec): 2=2.21%, 4=4.52%, 10=0.37%, 20=0.24%, 50=0.18% lat (msec): 100=0.17%, 250=0.15%, 500=0.02%, 750=0.02%, 1000=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=20825 read : io=3,072MiB, bw=9,021KiB/s, iops=225, runt=348691msec clat (usec): min=5, max=9,493, avg=43.68, stdev=42.28 bw (KiB/s) : min= 16, max=458336, per=36.93%, avg=13183.76, stdev=41407.20 write: io=1,024MiB, bw=2,991KiB/s, iops=75, runt=350478msec clat (usec): min=6, max=5,725K, avg=13180.55, stdev=147156.02 bw (KiB/s) : min= 0, max=156864, per=35.36%, avg=4207.69, stdev=13795.82 cpu : usr=0.81%, sys=0.93%, ctx=6224, majf=0, minf=849745 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=78561/26307, short=0/0 lat (usec): 10=3.25%, 20=12.20%, 50=42.37%, 100=38.65%, 250=3.19% lat (usec): 500=0.03%, 750=0.01% lat (msec): 10=0.01%, 20=0.01%, 50=0.01%, 100=0.01%, 250=0.03% lat (msec): 500=0.03%, 750=0.05%, 1000=0.05%, 2000=0.11%, >=2000=0.03% stresser: (groupid=1, jobs=1): err= 0: pid=20826 read : io=3,072MiB, bw=9,021KiB/s, iops=226, runt=348688msec clat (usec): min=4, max=188K, avg=46.00, stdev=676.15 bw (KiB/s) : min= 10, max=542176, per=34.78%, avg=12416.60, stdev=41015.80 write: io=1,024MiB, bw=3,007KiB/s, iops=75, runt=348679msec clat (usec): min=5, max=7,991K, avg=13161.94, stdev=151455.53 bw (KiB/s) : min= 0, max=177088, per=33.42%, avg=3977.74, stdev=13262.77 cpu : usr=0.79%, sys=0.90%, ctx=5101, majf=0, minf=848770 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=78835/26192, short=0/0 lat (usec): 10=3.26%, 20=12.58%, 50=43.33%, 100=38.11%, 250=2.27% lat (usec): 500=0.08%, 750=0.01%, 1000=0.01% lat (msec): 2=0.03%, 4=0.02%, 10=0.01%, 20=0.01%, 50=0.01% lat (msec): 100=0.01%, 250=0.03%, 500=0.02%, 750=0.06%, 1000=0.05% lat (msec): 2000=0.10%, >=2000=0.03% stresser: (groupid=1, jobs=1): err= 0: pid=20827 read : io=3,072MiB, bw=8,925KiB/s, iops=222, runt=352449msec clat (usec): min=4, max=9,152, avg=43.72, stdev=61.11 bw (KiB/s) : min= 15, max=478112, per=35.54%, avg=12686.98, stdev=42146.53 write: io=1,024MiB, bw=2,975KiB/s, iops=74, runt=352422msec clat (usec): min=6, max=5,999K, avg=13321.06, stdev=144407.84 bw (KiB/s) : min= 0, max=160544, per=34.09%, avg=4057.34, stdev=13729.52 cpu : usr=0.80%, sys=0.91%, ctx=4595, majf=0, minf=847655 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=78554/26173, short=0/0 lat (usec): 10=3.22%, 20=12.02%, 50=42.96%, 100=38.43%, 250=3.01% lat (usec): 500=0.03%, 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=0.02%, 500=0.03%, 750=0.05%, 1000=0.05% lat (msec): 2000=0.12%, >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=20828 read : io=3,072MiB, bw=8,954KiB/s, iops=224, runt=351318msec clat (usec): min=4, max=21,504, avg=42.77, stdev=94.75 bw (KiB/s) : min= 7, max=516256, per=38.34%, avg=13688.96, stdev=47506.78 write: io=1,024MiB, bw=2,984KiB/s, iops=74, runt=351299msec clat (usec): min=5, max=5,526K, avg=13281.71, stdev=147746.40 bw (KiB/s) : min= 0, max=171776, per=35.93%, avg=4276.04, stdev=15270.75 cpu : usr=0.74%, sys=0.94%, ctx=4820, majf=0, minf=848786 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=78765/26171, short=0/0 lat (usec): 10=3.48%, 20=12.46%, 50=43.56%, 100=38.19%, 250=1.91% lat (usec): 500=0.04%, 750=0.01%, 1000=0.01% lat (msec): 2=0.03%, 4=0.01%, 10=0.01%, 20=0.01%, 50=0.01% lat (msec): 100=0.01%, 250=0.02%, 500=0.03%, 750=0.05%, 1000=0.05% lat (msec): 2000=0.10%, >=2000=0.04% Run status group 0 (all jobs): READ: io=4,096MiB, aggrb=247MiB/s, minb=247MiB/s, maxb=247MiB/s, mint=16598msec, maxt=16598msec WRITE: io=4,096MiB, aggrb=21,949KiB/s, minb=21,949KiB/s, maxb=21,949KiB/s, mint=191088msec, maxt=191088msec Run status group 1 (all jobs): READ: io=12,288MiB, aggrb=35,701KiB/s, minb=8,925KiB/s, maxb=9,021KiB/s, mint=348688msec, maxt=352449msec WRITE: io=4,096MiB, aggrb=11,901KiB/s, minb=2,975KiB/s, maxb=3,007KiB/s, mint=348679msec, maxt=352422msec Disk stats (read/write): sda: ios=17443/79291, merge=0/1876461, ticks=203125/69268635, in_queue=69471738, util=96.77% 53.97user 39.17system 12:33.71elapsed 12%CPU (0avgtext+0avgdata 0maxresident)k 8390656inputs+24133464outputs (35major+5499010minor)pagefaults 0swaps