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=22081 read : io=4,096MiB, bw=245MiB/s, iops=6,280, runt= 16696msec clat (usec): min=10, max=1,325, avg=30.15, stdev=14.34 bw (KiB/s) : min= 0, max=254048, per=97.11%, avg=243974.59, stdev=43269.37 write: io=4,096MiB, bw=21,317KiB/s, iops=532, runt=196756msec clat (usec): min=14, max=776K, avg=1637.82, stdev=10620.92 bw (KiB/s) : min= 0, max=67072, per=102.83%, avg=21919.45, stdev=20996.53 cpu : usr=18.92%, sys=2.85%, ctx=19291, majf=0, minf=2099253 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=104867/104867, short=0/0 lat (usec): 20=21.68%, 50=49.28%, 100=20.66%, 250=0.31%, 500=0.12% lat (usec): 750=0.06%, 1000=0.04% lat (msec): 2=2.31%, 4=3.89%, 10=0.44%, 20=0.32%, 50=0.37% lat (msec): 100=0.40%, 250=0.11%, 500=0.01%, 1000=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=22283 read : io=3,072MiB, bw=17,033KiB/s, iops=425, runt=184681msec clat (usec): min=5, max=21,141, avg=45.79, stdev=80.46 bw (KiB/s) : min= 24, max=506400, per=44.43%, avg=29979.12, stdev=90308.46 write: io=1,024MiB, bw=5,678KiB/s, iops=142, runt=184680msec clat (usec): min=6, max=4,524K, avg=6893.92, stdev=102660.54 bw (KiB/s) : min= 0, max=172768, per=42.61%, avg=9584.24, stdev=29826.65 cpu : usr=1.63%, sys=1.48%, ctx=1713, majf=0, minf=842769 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=78596/26229, short=0/0 lat (usec): 10=3.19%, 20=9.18%, 50=43.57%, 100=40.21%, 250=3.68% lat (usec): 500=0.01% lat (msec): 4=0.01%, 20=0.01%, 50=0.01%, 100=0.01%, 250=0.01% lat (msec): 500=0.02%, 750=0.03%, 1000=0.03%, 2000=0.06%, >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=22284 read : io=3,072MiB, bw=17,225KiB/s, iops=429, runt=182622msec clat (usec): min=3, max=16,293, avg=44.16, stdev=74.39 bw (KiB/s) : min= 25, max=581024, per=48.25%, avg=32556.71, stdev=103520.20 write: io=1,024MiB, bw=5,707KiB/s, iops=142, runt=183729msec clat (usec): min=5, max=4,721K, avg=6857.04, stdev=106562.24 bw (KiB/s) : min= 0, max=190944, per=44.72%, avg=10058.87, stdev=32461.53 cpu : usr=1.50%, sys=1.55%, ctx=1578, majf=0, minf=840628 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=78398/26249, short=0/0 lat (usec): 4=0.01%, 10=2.99%, 20=9.73%, 50=44.54%, 100=40.16% lat (usec): 250=2.40%, 500=0.01%, 750=0.01% lat (msec): 4=0.01%, 20=0.01%, 100=0.01%, 250=0.01%, 500=0.02% lat (msec): 750=0.03%, 1000=0.03%, 2000=0.04%, >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=22285 read : io=3,072MiB, bw=16,868KiB/s, iops=421, runt=186479msec clat (usec): min=3, max=2,397, avg=45.37, stdev=27.22 bw (KiB/s) : min= 17, max=508352, per=44.34%, avg=29916.50, stdev=91458.51 write: io=1,024MiB, bw=5,623KiB/s, iops=140, runt=186464msec clat (usec): min=6, max=6,689K, avg=6955.96, stdev=113580.12 bw (KiB/s) : min= 0, max=173504, per=41.66%, avg=9371.34, stdev=29549.59 cpu : usr=1.63%, sys=1.51%, ctx=1582, majf=0, minf=842539 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=78564/26258, short=0/0 lat (usec): 4=0.01%, 10=3.07%, 20=9.73%, 50=43.19%, 100=40.18% lat (usec): 250=3.65%, 500=0.01% lat (msec): 2=0.01%, 4=0.01%, 10=0.01%, 50=0.01%, 100=0.01% lat (msec): 250=0.01%, 500=0.03%, 750=0.03%, 1000=0.03%, 2000=0.05% lat (msec): >=2000=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=22286 read : io=3,072MiB, bw=17,034KiB/s, iops=425, runt=184672msec clat (usec): min=4, max=14,862, avg=45.17, stdev=140.50 bw (KiB/s) : min= 13, max=551520, per=43.97%, avg=29672.39, stdev=91399.68 write: io=1,024MiB, bw=5,678KiB/s, iops=141, runt=184656msec clat (usec): min=3, max=5,926K, avg=6910.13, stdev=106135.60 bw (KiB/s) : min= 0, max=188896, per=39.78%, avg=8947.45, stdev=27927.97 cpu : usr=1.52%, sys=1.49%, ctx=1862, majf=0, minf=839421 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=78610/26172, short=0/0 lat (usec): 4=0.01%, 10=3.25%, 20=10.57%, 50=44.33%, 100=39.04% lat (usec): 250=2.58%, 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=0.03%, 1000=0.02%, 2000=0.06% lat (msec): >=2000=0.02% Run status group 0 (all jobs): READ: io=4,096MiB, aggrb=245MiB/s, minb=245MiB/s, maxb=245MiB/s, mint=16696msec, maxt=16696msec WRITE: io=4,096MiB, aggrb=21,317KiB/s, minb=21,317KiB/s, maxb=21,317KiB/s, mint=196756msec, maxt=196756msec Run status group 1 (all jobs): READ: io=12,288MiB, aggrb=67,476KiB/s, minb=16,869KiB/s, maxb=17,225KiB/s, mint=182622msec, maxt=186479msec WRITE: io=4,096MiB, aggrb=22,494KiB/s, minb=5,623KiB/s, maxb=5,707KiB/s, mint=183729msec, maxt=186464msec Disk stats (read/write): sda: ios=17443/63266, merge=0/1781607, ticks=213103/81048051, in_queue=81261134, util=96.21% 54.72user 40.65system 11:12.61elapsed 14%CPU (0avgtext+0avgdata 0maxresident)k 8390656inputs+23196712outputs (35major+5469073minor)pagefaults 0swaps