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=32313 read : io=4,096MiB, bw=237MiB/s, iops=6,063, runt= 17287msec clat (usec): min=11, max=155, avg=35.96, stdev=16.10 bw (KiB/s) : min= 0, max=253152, per=97.10%, avg=235604.11, stdev=41168.91 write: io=4,096MiB, bw=21,287KiB/s, iops=532, runt=197031msec clat (usec): min=14, max=843K, avg=1639.84, stdev=11639.60 bw (KiB/s) : min= 0, max=67296, per=103.19%, avg=21966.58, stdev=22235.34 cpu : usr=19.12%, sys=2.86%, ctx=17910, majf=0, minf=2099255 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=104825/104825, short=0/0 lat (usec): 20=21.48%, 50=40.95%, 100=29.20%, 250=0.31%, 500=0.12% lat (usec): 750=0.06%, 1000=0.05% lat (msec): 2=2.44%, 4=3.87%, 10=0.43%, 20=0.27%, 50=0.34% lat (msec): 100=0.36%, 250=0.13%, 500=0.01%, 750=0.01%, 1000=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=32509 read : io=3,072MiB, bw=17,257KiB/s, iops=431, runt=182284msec clat (usec): min=5, max=11,133, avg=45.71, stdev=59.34 bw (KiB/s) : min= 60, max=503200, per=45.28%, avg=31076.95, stdev=92727.67 write: io=1,024MiB, bw=5,753KiB/s, iops=143, runt=182255msec clat (usec): min=6, max=3,986K, avg=6813.33, stdev=105870.45 bw (KiB/s) : min= 0, max=169792, per=43.95%, avg=10054.33, stdev=30639.82 cpu : usr=1.67%, sys=1.38%, ctx=1719, majf=0, minf=841398 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=78731/26186, short=0/0 lat (usec): 10=3.22%, 20=9.36%, 50=43.56%, 100=40.00%, 250=3.71% lat (usec): 500=0.01% lat (msec): 4=0.01%, 10=0.01%, 20=0.01%, 100=0.01%, 250=0.01% lat (msec): 500=0.01%, 750=0.02%, 1000=0.02%, 2000=0.06%, >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=32510 read : io=3,072MiB, bw=17,590KiB/s, iops=439, runt=178833msec clat (usec): min=4, max=201K, avg=46.76, stdev=728.51 bw (KiB/s) : min= 6, max=548416, per=42.82%, avg=29392.97, stdev=94277.60 write: io=1,024MiB, bw=5,830KiB/s, iops=145, runt=179841msec clat (usec): min=4, max=2,846K, avg=6726.43, stdev=90130.43 bw (KiB/s) : min= 0, max=182912, per=39.46%, avg=9027.87, stdev=29981.25 cpu : usr=1.56%, sys=1.63%, ctx=1381, majf=0, minf=840557 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=78577/26149, short=0/0 lat (usec): 10=3.22%, 20=11.54%, 50=43.75%, 100=39.19%, 250=2.09% lat (usec): 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=0.04%, 750=0.04%, 1000=0.03%, 2000=0.06% lat (msec): >=2000=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=32511 read : io=3,072MiB, bw=17,309KiB/s, iops=433, runt=181738msec clat (usec): min=4, max=16,689, avg=46.47, stdev=66.78 bw (KiB/s) : min= 24, max=491424, per=43.43%, avg=29811.99, stdev=87461.71 write: io=1,024MiB, bw=5,770KiB/s, iops=144, runt=181717msec clat (usec): min=6, max=3,886K, avg=6785.65, stdev=100886.65 bw (KiB/s) : min= 0, max=165696, per=41.77%, avg=9557.66, stdev=28672.80 cpu : usr=1.70%, sys=1.48%, ctx=1647, majf=0, minf=841847 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=78725/26202, short=0/0 lat (usec): 10=2.86%, 20=9.31%, 50=42.74%, 100=40.13%, 250=4.78% lat (usec): 500=0.01% lat (msec): 10=0.01%, 20=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=32512 read : io=3,072MiB, bw=17,159KiB/s, iops=429, runt=183326msec clat (usec): min=4, max=14,617, avg=44.22, stdev=73.09 bw (KiB/s) : min= 35, max=551648, per=44.97%, avg=30863.75, stdev=97126.57 write: io=1,024MiB, bw=5,720KiB/s, iops=143, runt=183322msec clat (usec): min=6, max=4,393K, avg=6830.53, stdev=102452.34 bw (KiB/s) : min= 0, max=180544, per=42.59%, avg=9743.63, stdev=31237.14 cpu : usr=1.53%, sys=1.54%, ctx=1833, majf=0, minf=841506 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=78728/26285, short=0/0 lat (usec): 10=3.29%, 20=10.25%, 50=44.68%, 100=38.69%, 250=2.87% lat (usec): 500=0.05%, 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=0.02%, 1000=0.03%, 2000=0.06% lat (msec): >=2000=0.01% Run status group 0 (all jobs): READ: io=4,096MiB, aggrb=237MiB/s, minb=237MiB/s, maxb=237MiB/s, mint=17287msec, maxt=17287msec WRITE: io=4,096MiB, aggrb=21,287KiB/s, minb=21,287KiB/s, maxb=21,287KiB/s, mint=197031msec, maxt=197031msec Run status group 1 (all jobs): READ: io=12,288MiB, aggrb=68,637KiB/s, minb=17,159KiB/s, maxb=17,590KiB/s, mint=178833msec, maxt=183326msec WRITE: io=4,096MiB, aggrb=22,879KiB/s, minb=5,720KiB/s, maxb=5,830KiB/s, mint=179841msec, maxt=183322msec Disk stats (read/write): sda: ios=17443/62642, merge=0/1779196, ticks=213736/80363667, in_queue=80577383, util=96.13% 55.52user 40.02system 11:12.28elapsed 14%CPU (0avgtext+0avgdata 0maxresident)k 8390816inputs+23173744outputs (36major+5469016minor)pagefaults 0swaps