stresser: (g=0): rw=write, bs=16K-16K/16K-16K, ioengine=mmap, iodepth=1 stresser: (g=1): rw=randrw, bs=16K-16K/16K-16K, ioengine=mmap, iodepth=4 ... stresser: (g=1): rw=randrw, bs=16K-16K/16K-16K, 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=6376 read : io=4,096MiB, bw=242MiB/s, iops=15,512, runt= 16899msec clat (usec): min=10, max=309, avg=12.15, stdev= 2.20 bw (KiB/s) : min= 0, max=251392, per=97.13%, avg=241092.71, stdev=42783.25 write: io=4,096MiB, bw=21,358KiB/s, iops=1,334, runt=196377msec clat (usec): min=14, max=3,138K, avg=651.74, stdev=13853.67 bw (KiB/s) : min= 0, max=47072, per=114.50%, avg=24454.75, stdev=20690.29 cpu : usr=20.26%, sys=2.59%, ctx=18621, majf=0, minf=2102354 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=262144/262144, short=0/0 lat (usec): 20=92.84%, 50=3.81%, 100=0.02%, 250=0.01%, 500=0.03% lat (usec): 750=0.01%, 1000=0.01% lat (msec): 2=0.27%, 4=1.87%, 10=1.04%, 20=0.01%, 50=0.01% lat (msec): 100=0.01%, 250=0.03%, 500=0.03%, 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=7,126KiB/s, iops=445, runt=441432msec clat (usec): min=2, max=23,997, avg=19.99, stdev=80.43 bw (KiB/s) : min= 3, max=444416, per=74.25%, avg=21162.29, stdev=77585.53 write: io=1,024MiB, bw=2,375KiB/s, iops=148, runt=441436msec clat (usec): min=3, max=11,361K, avg=6665.37, stdev=171132.02 bw (KiB/s) : min= 0, max=149376, per=72.88%, avg=6924.47, stdev=25814.94 cpu : usr=0.80%, sys=0.68%, ctx=2719, majf=0, minf=872935 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=196608/65536, short=0/0 lat (usec): 4=0.01%, 10=10.56%, 20=22.30%, 50=66.96%, 100=0.07% lat (usec): 250=0.03%, 500=0.01%, 750=0.01% lat (msec): 2=0.01%, 4=0.01%, 10=0.01%, 50=0.01%, 250=0.01% lat (msec): 500=0.01%, 750=0.01%, 1000=0.01%, 2000=0.02%, >=2000=0.03% stresser: (groupid=1, jobs=1): err= 0: pid=6688 read : io=3,072MiB, bw=7,125KiB/s, iops=445, runt=441462msec clat (usec): min=2, max=14,789, avg=18.05, stdev=45.28 bw (KiB/s) : min= 3, max=520672, per=79.77%, avg=22736.04, stdev=90239.66 write: io=1,024MiB, bw=2,375KiB/s, iops=148, runt=441431msec clat (usec): min=3, max=10,602K, avg=6670.97, stdev=169174.88 bw (KiB/s) : min= 0, max=178336, per=78.34%, avg=7443.01, stdev=29644.97 cpu : usr=0.74%, sys=0.65%, ctx=2777, majf=0, minf=871713 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=196608/65536, short=0/0 lat (usec): 4=0.01%, 10=13.75%, 20=30.50%, 50=55.54%, 100=0.10% lat (usec): 250=0.03%, 500=0.01%, 1000=0.01% lat (msec): 2=0.01%, 4=0.01%, 10=0.01%, 20=0.01%, 500=0.01% lat (msec): 1000=0.01%, 2000=0.02%, >=2000=0.03% stresser: (groupid=1, jobs=1): err= 0: pid=6689 read : io=3,072MiB, bw=7,315KiB/s, iops=457, runt=430010msec clat (usec): min=2, max=13,532, avg=20.06, stdev=32.36 bw (KiB/s) : min= 2, max=430848, per=76.62%, avg=21839.31, stdev=75722.39 write: io=1,024MiB, bw=2,438KiB/s, iops=152, runt=430009msec clat (usec): min=3, max=10,182K, avg=6490.63, stdev=166795.90 bw (KiB/s) : min= 0, max=146944, per=73.63%, avg=6995.92, stdev=24652.25 cpu : usr=0.81%, sys=0.72%, ctx=2876, majf=0, minf=872778 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=196608/65536, short=0/0 lat (usec): 4=0.01%, 10=11.28%, 20=18.04%, 50=70.51%, 100=0.08% lat (usec): 250=0.03%, 500=0.01%, 750=0.01% lat (msec): 2=0.01%, 4=0.01%, 10=0.01%, 20=0.01%, 500=0.01% lat (msec): 750=0.01%, 1000=0.01%, 2000=0.02%, >=2000=0.03% stresser: (groupid=1, jobs=1): err= 0: pid=6690 read : io=3,072MiB, bw=7,125KiB/s, iops=445, runt=441451msec clat (usec): min=2, max=6,458, avg=18.16, stdev=28.13 bw (KiB/s) : min= 1, max=505568, per=76.08%, avg=21683.41, stdev=85237.52 write: io=1,024MiB, bw=2,375KiB/s, iops=148, runt=441452msec clat (usec): min=3, max=13,237K, avg=6669.99, stdev=168440.46 bw (KiB/s) : min= 0, max=165344, per=71.25%, avg=6769.74, stdev=27268.01 cpu : usr=0.73%, sys=0.71%, ctx=2974, majf=0, minf=872228 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=196608/65536, short=0/0 lat (usec): 4=0.01%, 10=13.74%, 20=31.67%, 50=54.02%, 100=0.38% lat (usec): 250=0.09%, 500=0.01%, 750=0.01% lat (msec): 2=0.01%, 4=0.01%, 10=0.01%, 500=0.01%, 750=0.01% lat (msec): 1000=0.01%, 2000=0.02%, >=2000=0.03% Run status group 0 (all jobs): READ: io=4,096MiB, aggrb=242MiB/s, minb=242MiB/s, maxb=242MiB/s, mint=16899msec, maxt=16899msec WRITE: io=4,096MiB, aggrb=21,358KiB/s, minb=21,358KiB/s, maxb=21,358KiB/s, mint=196377msec, maxt=196377msec Run status group 1 (all jobs): READ: io=12,288MiB, aggrb=28,502KiB/s, minb=7,125KiB/s, maxb=7,315KiB/s, mint=430010msec, maxt=441462msec WRITE: io=4,096MiB, aggrb=9,501KiB/s, minb=2,375KiB/s, maxb=2,438KiB/s, mint=430009msec, maxt=441452msec Disk stats (read/write): sda: ios=17445/115940, merge=0/1736026, ticks=207695/159710273, in_queue=159917954, util=97.74% 57.27user 40.49system 18:26.93elapsed 8%CPU (0avgtext+0avgdata 0maxresident)k 8388624inputs+23254808outputs (27major+5598002minor)pagefaults 0swaps