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=244MiB/s, iops=6,247, runt= 16782msec clat (usec): min=11, max=217, avg=31.03, stdev=14.10 bw (KiB/s) : min= 0, max=252800, per=97.13%, avg=242766.12, stdev=43074.17 write: io=4,096MiB, bw=21,043KiB/s, iops=526, runt=199316msec clat (usec): min=14, max=382K, avg=1662.36, stdev=10169.03 bw (KiB/s) : min= 0, max=67488, per=102.38%, avg=21543.35, stdev=20460.08 cpu : usr=18.68%, sys=2.74%, ctx=22828, majf=0, minf=2099265 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=104841/104841, short=0/0 lat (usec): 20=22.85%, 50=49.54%, 100=19.21%, 250=0.31%, 500=0.13% lat (usec): 750=0.05%, 1000=0.04% lat (msec): 2=2.36%, 4=3.79%, 10=0.45%, 20=0.33%, 50=0.41% lat (msec): 100=0.39%, 250=0.13%, 500=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=6633 read : io=3,072MiB, bw=16,444KiB/s, iops=412, runt=191300msec clat (usec): min=4, max=5,370, avg=46.28, stdev=36.10 bw (KiB/s) : min= 48, max=505152, per=44.35%, avg=29174.54, stdev=88297.03 write: io=1,024MiB, bw=5,481KiB/s, iops=136, runt=191278msec clat (usec): min=5, max=4,246K, avg=7149.24, stdev=100916.62 bw (KiB/s) : min= 0, max=167872, per=39.90%, avg=8749.06, stdev=28060.44 cpu : usr=1.56%, sys=1.64%, ctx=1509, majf=0, minf=841190 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=78885/26205, short=0/0 lat (usec): 10=3.30%, 20=8.43%, 50=43.49%, 100=40.03%, 250=4.56% lat (usec): 500=0.02%, 1000=0.01% lat (msec): 2=0.01%, 4=0.01%, 10=0.01%, 100=0.01%, 250=0.01% lat (msec): 500=0.04%, 750=0.03%, 1000=0.03%, 2000=0.06%, >=2000=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=6634 read : io=3,072MiB, bw=16,678KiB/s, iops=415, runt=188611msec clat (usec): min=4, max=278K, avg=52.11, stdev=993.23 bw (KiB/s) : min= 5, max=457728, per=42.25%, avg=27790.16, stdev=80246.83 write: io=1,024MiB, bw=5,560KiB/s, iops=138, runt=188589msec clat (usec): min=6, max=3,643K, avg=7036.85, stdev=98650.47 bw (KiB/s) : min= 0, max=156608, per=40.11%, avg=8795.58, stdev=26073.02 cpu : usr=1.60%, sys=1.62%, ctx=2018, majf=0, minf=840981 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=78437/26183, short=0/0 lat (usec): 10=2.80%, 20=7.66%, 50=41.62%, 100=40.09%, 250=7.63% lat (usec): 500=0.02%, 750=0.01%, 1000=0.01% lat (msec): 4=0.01%, 10=0.01%, 100=0.01%, 250=0.01%, 500=0.03% lat (msec): 750=0.03%, 1000=0.04%, 2000=0.05%, >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6635 read : io=3,072MiB, bw=16,734KiB/s, iops=419, runt=187979msec clat (usec): min=5, max=12,654, avg=43.57, stdev=51.75 bw (KiB/s) : min= 18, max=577440, per=49.32%, avg=32438.76, stdev=105076.19 write: io=1,024MiB, bw=5,553KiB/s, iops=139, runt=188791msec clat (usec): min=4, max=13,414K, avg=7041.31, stdev=133270.04 bw (KiB/s) : min= 0, max=190560, per=47.09%, avg=10325.83, stdev=33836.91 cpu : usr=1.44%, sys=1.44%, ctx=1722, majf=0, minf=840674 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=78793/26284, short=0/0 lat (usec): 10=3.40%, 20=9.05%, 50=45.51%, 100=39.69%, 250=2.20% lat (usec): 500=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=0.01%, 750=0.02%, 1000=0.03%, 2000=0.05% lat (msec): >=2000=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=6636 read : io=3,072MiB, bw=16,803KiB/s, iops=420, runt=187205msec clat (usec): min=3, max=146K, avg=48.04, stdev=545.56 bw (KiB/s) : min= 31, max=541248, per=40.60%, avg=26704.92, stdev=83728.49 write: io=1,024MiB, bw=5,601KiB/s, iops=140, runt=187211msec clat (usec): min=5, max=3,399K, avg=6968.49, stdev=98638.95 bw (KiB/s) : min= 0, max=175840, per=38.40%, avg=8419.45, stdev=26326.74 cpu : usr=1.53%, sys=1.52%, ctx=1678, majf=0, minf=839897 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=78718/26282, short=0/0 lat (usec): 4=0.01%, 10=2.95%, 20=9.32%, 50=45.10%, 100=39.68% lat (usec): 250=2.74%, 500=0.03%, 750=0.01% lat (msec): 2=0.01%, 4=0.01%, 10=0.01%, 20=0.01%, 50=0.01% lat (msec): 100=0.01%, 250=0.01%, 500=0.03%, 750=0.03%, 1000=0.03% lat (msec): 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=16782msec, maxt=16782msec WRITE: io=4,096MiB, aggrb=21,043KiB/s, minb=21,043KiB/s, maxb=21,043KiB/s, mint=199316msec, maxt=199316msec Run status group 1 (all jobs): READ: io=12,288MiB, aggrb=65,776KiB/s, minb=16,444KiB/s, maxb=16,803KiB/s, mint=187205msec, maxt=191300msec WRITE: io=4,096MiB, aggrb=21,927KiB/s, minb=5,481KiB/s, maxb=5,601KiB/s, mint=187211msec, maxt=191278msec Disk stats (read/write): sda: ios=17443/64264, merge=0/1785306, ticks=216380/85588830, in_queue=85805203, util=96.28% 54.67user 40.78system 11:25.82elapsed 13%CPU (0avgtext+0avgdata 0maxresident)k 8388912inputs+23226176outputs (27major+5466530minor)pagefaults 0swaps