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=6380 read : io=4,096MiB, bw=239MiB/s, iops=6,125, runt= 17123msec clat (usec): min=10, max=330, avg=34.08, stdev=15.79 bw (KiB/s) : min= 0, max=253664, per=97.17%, avg=238028.80, stdev=41765.97 write: io=4,096MiB, bw=21,242KiB/s, iops=531, runt=197452msec clat (usec): min=14, max=1,184K, avg=1644.00, stdev=21431.18 bw (KiB/s) : min= 0, max=47264, per=112.37%, avg=23868.84, stdev=19221.03 cpu : usr=19.74%, sys=2.81%, ctx=18454, 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=104883/104883, short=0/0 lat (usec): 20=17.75%, 50=46.64%, 100=27.24%, 250=0.07%, 500=0.04% lat (usec): 750=0.04%, 1000=0.03% lat (msec): 2=0.57%, 4=4.31%, 10=2.82%, 20=0.15%, 50=0.14% lat (msec): 100=0.12%, 250=0.03%, 500=0.02%, 750=0.03%, 1000=0.01% lat (msec): 2000=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=6685 read : io=3,072MiB, bw=16,634KiB/s, iops=416, runt=189106msec clat (usec): min=4, max=100K, avg=64.05, stdev=1016.92 bw (KiB/s) : min= 16, max=326155, per=42.28%, avg=27758.38, stdev=65292.81 write: io=1,024MiB, bw=5,545KiB/s, iops=139, runt=189104msec clat (usec): min=6, max=8,371K, avg=6981.58, stdev=112656.59 bw (KiB/s) : min= 0, max=111840, per=40.71%, avg=8910.05, stdev=21400.43 cpu : usr=1.41%, sys=1.47%, ctx=1880, majf=0, minf=841319 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=78799/26299, short=0/0 lat (usec): 10=3.25%, 20=11.96%, 50=43.50%, 100=39.51%, 250=1.53% lat (usec): 500=0.02% lat (msec): 2=0.01%, 4=0.01%, 10=0.01%, 20=0.01%, 50=0.04% lat (msec): 100=0.01%, 250=0.01%, 500=0.04%, 750=0.03%, 1000=0.03% lat (msec): 2000=0.04%, >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6686 read : io=3,072MiB, bw=16,569KiB/s, iops=414, runt=189847msec clat (usec): min=3, max=48,417, avg=60.00, stdev=777.56 bw (KiB/s) : min= 25, max=283968, per=41.85%, avg=27475.47, stdev=60453.73 write: io=1,024MiB, bw=5,499KiB/s, iops=137, runt=190659msec clat (usec): min=5, max=3,511K, avg=7062.26, stdev=102107.19 bw (KiB/s) : min= 0, max=100000, per=40.52%, avg=8868.13, stdev=19950.12 cpu : usr=1.46%, sys=1.48%, ctx=1952, majf=0, minf=841032 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=78678/26245, short=0/0 lat (usec): 4=0.01%, 10=3.14%, 20=9.84%, 50=44.44%, 100=39.57% lat (usec): 250=2.74%, 500=0.04% lat (msec): 2=0.01%, 20=0.01%, 50=0.05%, 100=0.01%, 250=0.01% lat (msec): 500=0.03%, 750=0.03%, 1000=0.02%, 2000=0.06%, >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6687 read : io=3,072MiB, bw=16,414KiB/s, iops=409, runt=191646msec clat (usec): min=4, max=100K, avg=61.63, stdev=956.36 bw (KiB/s) : min= 9, max=305719, per=41.38%, avg=27171.57, stdev=62596.94 write: io=1,024MiB, bw=5,471KiB/s, iops=136, runt=191636msec clat (usec): min=6, max=5,261K, avg=7127.12, stdev=105202.31 bw (KiB/s) : min= 0, max=106325, per=39.11%, avg=8560.79, stdev=20281.40 cpu : usr=1.41%, sys=1.57%, ctx=1806, majf=0, minf=843734 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=78549/26139, short=0/0 lat (usec): 10=3.11%, 20=10.66%, 50=43.73%, 100=40.32%, 250=1.93% lat (usec): 500=0.02%, 1000=0.01% lat (msec): 2=0.01%, 4=0.01%, 10=0.01%, 50=0.04%, 100=0.01% lat (msec): 250=0.01%, 500=0.03%, 750=0.04%, 1000=0.04%, 2000=0.04% lat (msec): >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6688 read : io=3,072MiB, bw=16,636KiB/s, iops=414, runt=189083msec clat (usec): min=3, max=48,555, avg=66.57, stdev=894.88 bw (KiB/s) : min= 24, max=295936, per=41.99%, avg=27569.27, stdev=59185.14 write: io=1,024MiB, bw=5,545KiB/s, iops=138, runt=189082msec clat (usec): min=6, max=4,800K, avg=7020.23, stdev=101488.16 bw (KiB/s) : min= 0, max=96757, per=39.96%, avg=8745.51, stdev=19318.73 cpu : usr=1.45%, sys=1.63%, ctx=1948, majf=0, minf=841576 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=78389/26127, short=0/0 lat (usec): 4=0.01%, 10=3.00%, 20=9.22%, 50=44.43%, 100=39.95% lat (usec): 250=3.12%, 500=0.03% lat (msec): 4=0.01%, 10=0.01%, 20=0.01%, 50=0.05%, 100=0.01% lat (msec): 250=0.01%, 500=0.03%, 750=0.04%, 1000=0.03%, 2000=0.05% lat (msec): >=2000=0.01% Run status group 0 (all jobs): READ: io=4,096MiB, aggrb=239MiB/s, minb=239MiB/s, maxb=239MiB/s, mint=17123msec, maxt=17123msec WRITE: io=4,096MiB, aggrb=21,242KiB/s, minb=21,242KiB/s, maxb=21,242KiB/s, mint=197452msec, maxt=197452msec Run status group 1 (all jobs): READ: io=12,288MiB, aggrb=65,657KiB/s, minb=16,414KiB/s, maxb=16,636KiB/s, mint=189083msec, maxt=191646msec WRITE: io=4,096MiB, aggrb=21,887KiB/s, minb=5,471KiB/s, maxb=5,545KiB/s, mint=189082msec, maxt=191636msec Disk stats (read/write): sda: ios=17444/65107, merge=0/1786505, ticks=208800/70758937, in_queue=70967722, util=95.85% 54.66user 38.77system 11:08.49elapsed 13%CPU (0avgtext+0avgdata 0maxresident)k 8388920inputs+23253688outputs (27major+5471356minor)pagefaults 0swaps