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=6359 read : io=4,096MiB, bw=245MiB/s, iops=6,262, runt= 16747msec clat (usec): min=10, max=229, avg=30.49, stdev=14.00 bw (KiB/s) : min= 0, max=253696, per=97.12%, avg=243255.53, stdev=43177.96 write: io=4,096MiB, bw=21,218KiB/s, iops=530, runt=197671msec clat (usec): min=14, max=1,122K, avg=1645.91, stdev=19032.76 bw (KiB/s) : min= 0, max=47137, per=115.17%, avg=24437.55, stdev=21380.43 cpu : usr=19.91%, sys=2.54%, ctx=18246, majf=0, minf=2099292 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=104878/104878, short=0/0 lat (usec): 20=22.65%, 50=49.02%, 100=19.98%, 250=0.05%, 500=0.04% lat (usec): 750=0.04%, 1000=0.03% lat (msec): 2=0.62%, 4=4.58%, 10=2.75%, 20=0.02%, 50=0.02% lat (msec): 100=0.02%, 250=0.07%, 500=0.09%, 750=0.01%, 1000=0.01% lat (msec): 2000=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=6667 read : io=3,072MiB, bw=17,454KiB/s, iops=435, runt=180227msec clat (usec): min=5, max=22,880, avg=49.37, stdev=132.04 bw (KiB/s) : min= 20, max=480864, per=55.24%, avg=37657.67, stdev=98533.42 write: io=1,024MiB, bw=5,818KiB/s, iops=145, runt=180220msec clat (usec): min=5, max=6,516K, avg=6715.32, stdev=136701.09 bw (KiB/s) : min= 0, max=158784, per=54.67%, avg=12425.80, stdev=32322.13 cpu : usr=1.71%, sys=1.55%, ctx=1265, majf=0, minf=842102 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=78548/26219, short=0/0 lat (usec): 10=2.67%, 20=7.30%, 50=42.28%, 100=41.21%, 250=6.40% lat (usec): 500=0.02% 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=0.01%, 750=0.02%, 1000=0.02% lat (msec): 2000=0.04%, >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6668 read : io=3,072MiB, bw=17,041KiB/s, iops=424, runt=184589msec clat (usec): min=3, max=18,751, avg=47.38, stdev=116.49 bw (KiB/s) : min= 11, max=551872, per=55.97%, avg=38150.09, stdev=105284.48 write: io=1,024MiB, bw=5,682KiB/s, iops=142, runt=184533msec clat (usec): min=4, max=6,312K, avg=6879.31, stdev=137258.97 bw (KiB/s) : min= 0, max=182752, per=53.47%, avg=12152.20, stdev=34831.32 cpu : usr=1.58%, sys=1.59%, ctx=1170, majf=0, minf=838759 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=78316/26253, short=0/0 lat (usec): 4=0.01%, 10=2.67%, 20=7.59%, 50=44.12%, 100=40.74% lat (usec): 250=4.73%, 500=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=0.01%, 2000=0.03%, >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6669 read : io=3,072MiB, bw=17,272KiB/s, iops=432, runt=182125msec clat (usec): min=3, max=389K, avg=51.46, stdev=1393.53 bw (KiB/s) : min= 20, max=564032, per=54.35%, avg=37047.13, stdev=107151.74 write: io=1,024MiB, bw=5,741KiB/s, iops=143, runt=182634msec clat (usec): min=5, max=6,590K, avg=6800.12, stdev=133387.47 bw (KiB/s) : min= 0, max=180576, per=52.55%, avg=11945.16, stdev=34676.35 cpu : usr=1.57%, sys=1.64%, ctx=1379, majf=0, minf=842035 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=78841/26215, short=0/0 lat (usec): 4=0.01%, 10=2.98%, 20=8.21%, 50=43.99%, 100=40.02% lat (usec): 250=4.64%, 500=0.04%, 750=0.01% lat (msec): 2=0.01%, 4=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=0.03% lat (msec): >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6670 read : io=3,072MiB, bw=17,084KiB/s, iops=428, runt=184126msec clat (usec): min=3, max=17,322, avg=48.70, stdev=102.21 bw (KiB/s) : min= 9, max=469152, per=48.41%, avg=33000.44, stdev=86333.03 write: io=1,024MiB, bw=5,696KiB/s, iops=142, runt=184073msec clat (usec): min=6, max=6,157K, avg=6872.43, stdev=132632.98 bw (KiB/s) : min= 0, max=161280, per=48.05%, avg=10921.91, stdev=29363.51 cpu : usr=1.67%, sys=1.70%, ctx=1095, majf=0, minf=839919 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=78816/26192, short=0/0 lat (usec): 4=0.01%, 10=2.89%, 20=7.37%, 50=41.96%, 100=40.46% lat (usec): 250=7.15%, 500=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=0.03%, >=2000=0.02% Run status group 0 (all jobs): READ: io=4,096MiB, aggrb=245MiB/s, minb=245MiB/s, maxb=245MiB/s, mint=16747msec, maxt=16747msec WRITE: io=4,096MiB, aggrb=21,218KiB/s, minb=21,218KiB/s, maxb=21,218KiB/s, mint=197671msec, maxt=197671msec Run status group 1 (all jobs): READ: io=12,288MiB, aggrb=68,167KiB/s, minb=17,041KiB/s, maxb=17,454KiB/s, mint=180227msec, maxt=184589msec WRITE: io=4,096MiB, aggrb=22,729KiB/s, minb=5,682KiB/s, maxb=5,818KiB/s, mint=180220msec, maxt=184533msec Disk stats (read/write): sda: ios=17443/62290, merge=0/1785277, ticks=213382/68064510, in_queue=68277891, util=96.04% 54.98user 38.27system 10:53.10elapsed 14%CPU (0avgtext+0avgdata 0maxresident)k 8388912inputs+23221424outputs (27major+5466509minor)pagefaults 0swaps