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=6314 read : io=4,096MiB, bw=243MiB/s, iops=6,233, runt= 16832msec clat (usec): min=11, max=247, avg=31.10, stdev=14.23 bw (KiB/s) : min= 0, max=252672, per=97.13%, avg=242059.29, stdev=43079.25 write: io=4,096MiB, bw=21,581KiB/s, iops=539, runt=194349msec clat (usec): min=14, max=940K, avg=1614.39, stdev=17131.65 bw (KiB/s) : min= 0, max=47136, per=110.76%, avg=23903.36, stdev=19494.24 cpu : usr=19.66%, sys=2.67%, ctx=18344, 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=104915/104915, short=0/0 lat (usec): 20=22.51%, 50=49.31%, 100=19.82%, 250=0.06%, 500=0.04% lat (usec): 750=0.05%, 1000=0.03% lat (msec): 2=0.64%, 4=4.37%, 10=2.70%, 20=0.13%, 50=0.11% lat (msec): 100=0.11%, 250=0.04%, 500=0.07%, 750=0.01%, 1000=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=6624 read : io=3,072MiB, bw=16,475KiB/s, iops=410, runt=190938msec clat (usec): min=2, max=30,075, avg=47.83, stdev=133.22 bw (KiB/s) : min= 8, max=498272, per=54.28%, avg=35769.97, stdev=95936.44 write: io=1,024MiB, bw=5,491KiB/s, iops=137, runt=190930msec clat (usec): min=6, max=6,438K, avg=7142.51, stdev=133839.37 bw (KiB/s) : min= 0, max=169568, per=50.68%, avg=11134.44, stdev=31191.16 cpu : usr=1.58%, sys=1.53%, ctx=1283, majf=0, minf=841975 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=78382/26161, short=0/0 lat (usec): 4=0.01%, 10=2.84%, 20=8.26%, 50=42.70%, 100=40.71% lat (usec): 250=5.33%, 500=0.02% lat (msec): 2=0.01%, 4=0.01%, 50=0.01%, 250=0.01%, 500=0.02% lat (msec): 750=0.02%, 1000=0.03%, 2000=0.03%, >=2000=0.03% stresser: (groupid=1, jobs=1): err= 0: pid=6625 read : io=3,072MiB, bw=16,489KiB/s, iops=412, runt=190777msec clat (usec): min=3, max=14,419, avg=47.82, stdev=65.86 bw (KiB/s) : min= 7, max=508640, per=56.21%, avg=37041.10, stdev=97943.57 write: io=1,024MiB, bw=5,496KiB/s, iops=137, runt=190780msec clat (usec): min=5, max=7,267K, avg=7132.62, stdev=140612.39 bw (KiB/s) : min= 0, max=165632, per=51.63%, avg=11341.62, stdev=30951.63 cpu : usr=1.60%, sys=1.53%, ctx=1376, majf=0, minf=840685 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=78627/26181, short=0/0 lat (usec): 4=0.01%, 10=2.65%, 20=8.08%, 50=42.86%, 100=40.72% lat (usec): 250=5.51%, 500=0.02%, 750=0.01% lat (msec): 4=0.01%, 10=0.01%, 20=0.01%, 100=0.01%, 250=0.01% lat (msec): 500=0.02%, 750=0.03%, 1000=0.02%, 2000=0.03%, >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6626 read : io=3,072MiB, bw=16,507KiB/s, iops=412, runt=190562msec clat (usec): min=3, max=7,056, avg=45.75, stdev=39.67 bw (KiB/s) : min= 20, max=553856, per=57.43%, avg=37844.35, stdev=109992.59 write: io=1,024MiB, bw=5,496KiB/s, iops=137, runt=190776msec clat (usec): min=6, max=10,328K, avg=7106.09, stdev=148048.20 bw (KiB/s) : min= 0, max=189696, per=54.63%, avg=12001.09, stdev=35706.66 cpu : usr=1.50%, sys=1.56%, ctx=1128, majf=0, minf=843522 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=78540/26298, short=0/0 lat (usec): 4=0.01%, 10=2.80%, 20=8.30%, 50=44.59%, 100=40.30% lat (usec): 250=3.83%, 500=0.05%, 750=0.01% lat (msec): 2=0.01%, 4=0.01%, 10=0.01%, 100=0.01%, 250=0.01% lat (msec): 500=0.01%, 750=0.02%, 1000=0.02%, 2000=0.03%, >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6627 read : io=3,072MiB, bw=16,864KiB/s, iops=420, runt=186529msec clat (usec): min=4, max=21,974, avg=46.02, stdev=144.66 bw (KiB/s) : min= 5, max=540576, per=51.61%, avg=34009.79, stdev=96168.05 write: io=1,024MiB, bw=5,622KiB/s, iops=140, runt=186521msec clat (usec): min=6, max=6,264K, avg=6944.83, stdev=134073.95 bw (KiB/s) : min= 0, max=182944, per=50.31%, avg=11052.06, stdev=31526.81 cpu : usr=1.54%, sys=1.49%, ctx=1258, majf=0, minf=841958 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=78410/26297, short=0/0 lat (usec): 10=2.92%, 20=8.79%, 50=44.82%, 100=40.31%, 250=3.01% lat (usec): 500=0.02%, 1000=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=0.02%, 750=0.02%, 1000=0.02%, 2000=0.03% lat (msec): >=2000=0.03% Run status group 0 (all jobs): READ: io=4,096MiB, aggrb=243MiB/s, minb=243MiB/s, maxb=243MiB/s, mint=16832msec, maxt=16832msec WRITE: io=4,096MiB, aggrb=21,581KiB/s, minb=21,581KiB/s, maxb=21,581KiB/s, mint=194349msec, maxt=194349msec Run status group 1 (all jobs): READ: io=12,288MiB, aggrb=65,900KiB/s, minb=16,475KiB/s, maxb=16,864KiB/s, mint=186529msec, maxt=190938msec WRITE: io=4,096MiB, aggrb=21,968KiB/s, minb=5,491KiB/s, maxb=5,622KiB/s, mint=186521msec, maxt=190930msec Disk stats (read/write): sda: ios=17444/64696, merge=0/1787832, ticks=207715/71021086, in_queue=71228793, util=96.07% 54.97user 37.94system 11:03.20elapsed 14%CPU (0avgtext+0avgdata 0maxresident)k 8388912inputs+23253840outputs (27major+5471822minor)pagefaults 0swaps