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=6365 read : io=4,096MiB, bw=245MiB/s, iops=6,291, runt= 16685msec clat (usec): min=10, max=246, avg=30.01, stdev=13.78 bw (KiB/s) : min= 0, max=254752, per=97.11%, avg=244114.82, stdev=43316.13 write: io=4,096MiB, bw=21,244KiB/s, iops=531, runt=197429msec clat (usec): min=14, max=2,555K, avg=1642.99, stdev=20828.97 bw (KiB/s) : min= 0, max=47264, per=115.01%, avg=24431.69, stdev=21089.81 cpu : usr=19.83%, sys=2.56%, ctx=20458, majf=0, minf=2099296 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=104978/104978, short=0/0 lat (usec): 20=22.97%, 50=49.31%, 100=19.39%, 250=0.05%, 500=0.04% lat (usec): 750=0.04%, 1000=0.02% lat (msec): 2=0.60%, 4=4.31%, 10=3.04%, 20=0.02%, 50=0.02% lat (msec): 100=0.02%, 250=0.08%, 500=0.08%, 750=0.01%, 1000=0.01% lat (msec): 2000=0.01%, >=2000=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=6675 read : io=3,072MiB, bw=17,125KiB/s, iops=427, runt=183685msec clat (usec): min=3, max=14,739, avg=48.66, stdev=61.06 bw (KiB/s) : min= 9, max=499424, per=55.90%, avg=36213.42, stdev=96216.64 write: io=1,024MiB, bw=5,708KiB/s, iops=142, runt=183673msec clat (usec): min=5, max=8,176K, avg=6867.00, stdev=133558.07 bw (KiB/s) : min= 0, max=163840, per=53.86%, avg=11630.72, stdev=31640.64 cpu : usr=1.68%, sys=1.57%, ctx=1361, majf=0, minf=841623 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=78570/26146, short=0/0 lat (usec): 4=0.01%, 10=2.45%, 20=7.26%, 50=42.16%, 100=41.24% lat (usec): 250=6.76%, 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=0.02%, 1000=0.02%, 2000=0.03%, >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6676 read : io=3,072MiB, bw=16,195KiB/s, iops=405, runt=194232msec clat (usec): min=3, max=42,122, avg=45.84, stdev=176.84 bw (KiB/s) : min= 6, max=554976, per=60.94%, avg=39477.16, stdev=108675.86 write: io=1,024MiB, bw=5,398KiB/s, iops=135, runt=194224msec clat (usec): min=5, max=9,540K, avg=7248.04, stdev=153372.68 bw (KiB/s) : min= 0, max=186240, per=58.31%, avg=12591.75, stdev=35669.32 cpu : usr=1.42%, sys=1.55%, ctx=1184, majf=0, minf=840028 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=78751/26261, short=0/0 lat (usec): 4=0.01%, 10=3.35%, 20=8.46%, 50=44.71%, 100=39.67% lat (usec): 250=3.64%, 500=0.02%, 750=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=0.02%, 750=0.03%, 1000=0.02%, 2000=0.03% lat (msec): >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6677 read : io=3,072MiB, bw=17,512KiB/s, iops=438, runt=179623msec clat (usec): min=5, max=17,823, avg=49.11, stdev=135.87 bw (KiB/s) : min= 19, max=466016, per=54.79%, avg=35493.27, stdev=90481.48 write: io=1,024MiB, bw=5,709KiB/s, iops=142, runt=183655msec clat (usec): min=5, max=8,184K, avg=6849.52, stdev=140605.22 bw (KiB/s) : min= 0, max=153024, per=53.42%, avg=11535.15, stdev=29462.29 cpu : usr=1.70%, sys=1.51%, ctx=1298, majf=0, minf=842279 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=78774/26208, short=0/0 lat (usec): 10=2.50%, 20=8.12%, 50=41.87%, 100=40.67%, 250=6.69% lat (usec): 500=0.02% 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=0.02%, 1000=0.02%, 2000=0.03% lat (msec): >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6678 read : io=3,072MiB, bw=16,197KiB/s, iops=405, runt=194217msec clat (usec): min=4, max=47,104, avg=46.31, stdev=189.96 bw (KiB/s) : min= 12, max=540768, per=63.49%, avg=41128.50, stdev=109905.90 write: io=1,024MiB, bw=5,399KiB/s, iops=134, runt=194211msec clat (usec): min=5, max=10,127K, avg=7267.57, stdev=161626.18 bw (KiB/s) : min= 0, max=182208, per=61.04%, avg=13181.03, stdev=35889.39 cpu : usr=1.44%, sys=1.56%, ctx=1277, majf=0, minf=841970 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=78722/26183, short=0/0 lat (usec): 10=3.27%, 20=9.10%, 50=43.91%, 100=39.39%, 250=4.14% lat (usec): 500=0.06%, 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=0.02%, 1000=0.02% lat (msec): 2000=0.02%, >=2000=0.02% Run status group 0 (all jobs): READ: io=4,096MiB, aggrb=245MiB/s, minb=245MiB/s, maxb=245MiB/s, mint=16685msec, maxt=16685msec WRITE: io=4,096MiB, aggrb=21,244KiB/s, minb=21,244KiB/s, maxb=21,244KiB/s, mint=197429msec, maxt=197429msec Run status group 1 (all jobs): READ: io=12,288MiB, aggrb=64,783KiB/s, minb=16,195KiB/s, maxb=17,513KiB/s, mint=179623msec, maxt=194232msec WRITE: io=4,096MiB, aggrb=21,595KiB/s, minb=5,398KiB/s, maxb=5,709KiB/s, mint=183655msec, maxt=194224msec Disk stats (read/write): sda: ios=17443/63477, merge=0/1786558, ticks=208124/69458136, in_queue=69666235, util=96.34% 54.75user 36.19system 10:55.44elapsed 13%CPU (0avgtext+0avgdata 0maxresident)k 8388624inputs+23231424outputs (27major+5469598minor)pagefaults 0swaps