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=6377 read : io=4,096MiB, bw=246MiB/s, iops=6,287, runt= 16654msec clat (usec): min=10, max=248, avg=29.87, stdev=13.69 bw (KiB/s) : min= 0, max=254752, per=97.10%, avg=244561.88, stdev=43392.33 write: io=4,096MiB, bw=21,632KiB/s, iops=540, runt=193892msec clat (usec): min=13, max=5,400K, avg=1612.63, stdev=33917.19 bw (KiB/s) : min= 0, max=47424, per=119.54%, avg=25859.11, stdev=19151.91 cpu : usr=19.54%, sys=2.69%, ctx=18389, majf=0, minf=2099251 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=104705/104705, short=0/0 lat (usec): 20=23.01%, 50=50.87%, 100=17.75%, 250=0.06%, 500=0.04% lat (usec): 750=0.04%, 1000=0.02% lat (msec): 2=0.61%, 4=4.38%, 10=2.78%, 20=0.11%, 50=0.12% lat (msec): 100=0.11%, 250=0.03%, 500=0.05%, 750=0.01%, 1000=0.01% lat (msec): 2000=0.01%, >=2000=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=6687 read : io=3,072MiB, bw=17,478KiB/s, iops=436, runt=179984msec clat (usec): min=3, max=9,678, avg=48.42, stdev=48.05 bw (KiB/s) : min= 15, max=494688, per=55.56%, avg=36669.84, stdev=96246.47 write: io=1,024MiB, bw=5,825KiB/s, iops=146, runt=179994msec clat (usec): min=5, max=6,370K, avg=6683.45, stdev=132746.66 bw (KiB/s) : min= 0, max=164160, per=54.76%, avg=12046.72, stdev=31648.69 cpu : usr=1.69%, sys=1.62%, ctx=1263, majf=0, minf=842931 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=78513/26321, short=0/0 lat (usec): 4=0.01%, 10=2.66%, 20=7.35%, 50=42.34%, 100=40.90% lat (usec): 250=6.62%, 500=0.01% lat (msec): 4=0.01%, 10=0.01%, 100=0.01%, 250=0.01%, 500=0.01% lat (msec): 750=0.02%, 1000=0.02%, 2000=0.04%, >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6688 read : io=3,072MiB, bw=16,504KiB/s, iops=413, runt=190604msec clat (usec): min=3, max=11,506, avg=46.21, stdev=103.29 bw (KiB/s) : min= 19, max=545728, per=59.49%, avg=39257.91, stdev=106395.53 write: io=1,024MiB, bw=5,501KiB/s, iops=137, runt=190611msec clat (usec): min=5, max=7,008K, avg=7128.11, stdev=142795.20 bw (KiB/s) : min= 0, max=180352, per=56.03%, avg=12327.30, stdev=34409.73 cpu : usr=1.50%, sys=1.42%, ctx=1238, majf=0, minf=839822 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=78738/26180, short=0/0 lat (usec): 4=0.01%, 10=2.86%, 20=8.01%, 50=45.42%, 100=40.32% lat (usec): 250=3.25%, 500=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=0.01%, 750=0.02%, 1000=0.02% lat (msec): 2000=0.04%, >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6689 read : io=3,072MiB, bw=16,499KiB/s, iops=413, runt=190662msec clat (usec): min=4, max=31,073, avg=47.58, stdev=150.03 bw (KiB/s) : min= 11, max=513248, per=53.97%, avg=35618.82, stdev=96907.03 write: io=1,024MiB, bw=5,500KiB/s, iops=137, runt=190647msec clat (usec): min=5, max=6,755K, avg=7110.94, stdev=140346.56 bw (KiB/s) : min= 0, max=173120, per=52.35%, avg=11516.98, stdev=31659.05 cpu : usr=1.56%, sys=1.54%, ctx=1078, majf=0, minf=843412 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=78821/26245, short=0/0 lat (usec): 10=2.85%, 20=8.36%, 50=43.58%, 100=40.60%, 250=4.45% lat (usec): 500=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=0.02%, 750=0.03%, 1000=0.02%, 2000=0.04% lat (msec): >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6690 read : io=3,072MiB, bw=16,935KiB/s, iops=424, runt=185746msec clat (usec): min=3, max=28,097, avg=46.22, stdev=115.97 bw (KiB/s) : min= 3, max=534432, per=55.90%, avg=36890.28, stdev=103773.76 write: io=1,024MiB, bw=5,646KiB/s, iops=141, runt=185707msec clat (usec): min=5, max=6,085K, avg=6931.70, stdev=130945.66 bw (KiB/s) : min= 0, max=180416, per=54.06%, avg=11892.77, stdev=34512.58 cpu : usr=1.47%, sys=1.70%, ctx=1411, majf=0, minf=839199 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=78757/26226, short=0/0 lat (usec): 4=0.01%, 10=3.26%, 20=8.18%, 50=44.44%, 100=39.86% lat (usec): 250=4.05%, 500=0.05%, 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=0.02%, 750=0.03%, 1000=0.02% lat (msec): 2000=0.04%, >=2000=0.02% Run status group 0 (all jobs): READ: io=4,096MiB, aggrb=246MiB/s, minb=246MiB/s, maxb=246MiB/s, mint=16654msec, maxt=16654msec WRITE: io=4,096MiB, aggrb=21,632KiB/s, minb=21,632KiB/s, maxb=21,632KiB/s, mint=193892msec, maxt=193892msec Run status group 1 (all jobs): READ: io=12,288MiB, aggrb=65,996KiB/s, minb=16,499KiB/s, maxb=17,478KiB/s, mint=179984msec, maxt=190662msec WRITE: io=4,096MiB, aggrb=22,000KiB/s, minb=5,500KiB/s, maxb=5,825KiB/s, mint=179994msec, maxt=190647msec Disk stats (read/write): sda: ios=17444/64438, merge=0/1782925, ticks=188116/72223311, in_queue=72411417, util=96.14% 54.49user 38.17system 11:06.75elapsed 13%CPU (0avgtext+0avgdata 0maxresident)k 8388920inputs+23208896outputs (27major+5469035minor)pagefaults 0swaps