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=6311 read : io=4,096MiB, bw=244MiB/s, iops=6,261, runt= 16757msec clat (usec): min=11, max=139, avg=30.82, stdev=13.90 bw (KiB/s) : min= 0, max=253280, per=97.13%, avg=243122.82, stdev=43147.90 write: io=4,096MiB, bw=20,761KiB/s, iops=519, runt=202028msec clat (usec): min=14, max=843K, avg=1686.59, stdev=19326.33 bw (KiB/s) : min= 0, max=65916, per=104.76%, avg=21749.04, stdev=18397.28 cpu : usr=19.58%, sys=2.43%, ctx=31617, majf=0, minf=2099389 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=104920/104920, short=0/0 lat (usec): 20=22.47%, 50=49.37%, 100=19.85%, 250=0.24%, 500=0.11% lat (usec): 750=0.06%, 1000=0.04% lat (msec): 2=2.10%, 4=4.69%, 10=0.61%, 20=0.09%, 50=0.09% lat (msec): 100=0.08%, 250=0.08%, 500=0.10%, 750=0.01%, 1000=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=6621 read : io=3,072MiB, bw=16,562KiB/s, iops=414, runt=189930msec clat (usec): min=3, max=15,486, avg=46.89, stdev=63.58 bw (KiB/s) : min= 11, max=490208, per=44.23%, avg=28124.29, stdev=83623.11 write: io=1,024MiB, bw=5,520KiB/s, iops=137, runt=189933msec clat (usec): min=5, max=4,470K, avg=7114.90, stdev=106027.27 bw (KiB/s) : min= 0, max=165408, per=42.51%, avg=9012.15, stdev=27360.57 cpu : usr=1.61%, sys=1.50%, ctx=1724, majf=0, minf=842935 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=78793/26133, short=0/0 lat (usec): 4=0.01%, 10=2.97%, 20=8.10%, 50=43.67%, 100=40.50% lat (usec): 250=4.57%, 500=0.02%, 750=0.01%, 1000=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=0.04%, 2000=0.05%, >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6622 read : io=3,072MiB, bw=16,240KiB/s, iops=404, runt=193698msec clat (usec): min=3, max=24,745, avg=46.42, stdev=172.29 bw (KiB/s) : min= 7, max=539008, per=43.21%, avg=27476.32, stdev=82783.01 write: io=1,024MiB, bw=5,413KiB/s, iops=135, runt=193692msec clat (usec): min=6, max=5,496K, avg=7236.65, stdev=111348.71 bw (KiB/s) : min= 0, max=179040, per=41.36%, avg=8768.20, stdev=26945.23 cpu : usr=1.46%, sys=1.52%, ctx=1655, majf=0, minf=839686 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=78432/26223, short=0/0 lat (usec): 4=0.01%, 10=3.17%, 20=9.01%, 50=44.94%, 100=39.59% lat (usec): 250=3.06%, 500=0.04%, 750=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=0.04%, 2000=0.05% lat (msec): >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6623 read : io=3,072MiB, bw=15,898KiB/s, iops=397, runt=197868msec clat (usec): min=5, max=103K, avg=46.14, stdev=373.56 bw (KiB/s) : min= 13, max=553632, per=46.27%, avg=29424.51, stdev=94977.65 write: io=1,024MiB, bw=5,299KiB/s, iops=132, runt=197863msec clat (usec): min=6, max=9,502K, avg=7401.09, stdev=133618.24 bw (KiB/s) : min= 0, max=185184, per=45.21%, avg=9583.54, stdev=31154.94 cpu : usr=1.43%, sys=1.39%, ctx=2028, majf=0, minf=840852 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=78620/26206, short=0/0 lat (usec): 10=2.77%, 20=8.76%, 50=45.36%, 100=40.32%, 250=2.61% lat (usec): 500=0.02% lat (msec): 4=0.01%, 10=0.01%, 20=0.01%, 50=0.01%, 100=0.01% lat (msec): 250=0.01%, 500=0.01%, 750=0.02%, 1000=0.03%, 2000=0.04% lat (msec): >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6624 read : io=3,072MiB, bw=15,900KiB/s, iops=397, runt=197831msec clat (usec): min=3, max=6,959, avg=46.04, stdev=35.90 bw (KiB/s) : min= 14, max=497760, per=43.61%, avg=27733.76, stdev=84433.63 write: io=1,024MiB, bw=5,300KiB/s, iops=132, runt=197817msec clat (usec): min=6, max=6,170K, avg=7380.77, stdev=112984.18 bw (KiB/s) : min= 0, max=170560, per=41.63%, avg=8823.94, stdev=27587.55 cpu : usr=1.52%, sys=1.47%, ctx=1663, majf=0, minf=841959 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=78700/26275, short=0/0 lat (usec): 4=0.01%, 10=2.73%, 20=8.84%, 50=44.20%, 100=40.18% lat (usec): 250=3.85%, 500=0.02% lat (msec): 10=0.01%, 50=0.01%, 100=0.01%, 250=0.01%, 500=0.03% lat (msec): 750=0.02%, 1000=0.03%, 2000=0.06%, >=2000=0.02% Run status group 0 (all jobs): READ: io=4,096MiB, aggrb=244MiB/s, minb=244MiB/s, maxb=244MiB/s, mint=16757msec, maxt=16757msec WRITE: io=4,096MiB, aggrb=20,761KiB/s, minb=20,761KiB/s, maxb=20,761KiB/s, mint=202028msec, maxt=202028msec Run status group 1 (all jobs): READ: io=12,288MiB, aggrb=63,592KiB/s, minb=15,898KiB/s, maxb=16,562KiB/s, mint=189930msec, maxt=197868msec WRITE: io=4,096MiB, aggrb=21,198KiB/s, minb=5,299KiB/s, maxb=5,520KiB/s, mint=189933msec, maxt=197863msec Disk stats (read/write): sda: ios=17444/62312, merge=0/1785753, ticks=201902/91010641, in_queue=91212533, util=96.32% 55.00user 39.89system 11:24.68elapsed 13%CPU (0avgtext+0avgdata 0maxresident)k 8388920inputs+23221976outputs (27major+5469357minor)pagefaults 0swaps