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=6309 read : io=4,096MiB, bw=244MiB/s, iops=6,234, runt= 16818msec clat (usec): min=11, max=314, avg=30.94, stdev=14.35 bw (KiB/s) : min= 0, max=252384, per=97.14%, avg=242261.65, stdev=42993.38 write: io=4,096MiB, bw=21,796KiB/s, iops=544, runt=192426msec clat (usec): min=14, max=1,107K, avg=1596.34, stdev=20259.67 bw (KiB/s) : min= 0, max=47552, per=111.80%, avg=24368.36, stdev=19339.56 cpu : usr=19.96%, sys=2.67%, ctx=18625, majf=0, minf=2099253 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=104855/104855, short=0/0 lat (usec): 20=21.74%, 50=48.16%, 100=21.70%, 250=0.09%, 500=0.04% lat (usec): 750=0.05%, 1000=0.04% lat (msec): 2=0.63%, 4=4.56%, 10=2.51%, 20=0.13%, 50=0.15% lat (msec): 100=0.12%, 250=0.03%, 500=0.03%, 750=0.02%, 1000=0.01% lat (msec): 2000=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=6614 read : io=3,072MiB, bw=16,970KiB/s, iops=424, runt=185368msec clat (usec): min=3, max=3,790, avg=48.27, stdev=41.04 bw (KiB/s) : min= 8, max=480256, per=41.59%, avg=27899.12, stdev=80112.88 write: io=1,024MiB, bw=5,657KiB/s, iops=141, runt=185335msec clat (usec): min=4, max=4,458K, avg=6931.54, stdev=100059.76 bw (KiB/s) : min= 0, max=157600, per=39.79%, avg=8897.28, stdev=26297.32 cpu : usr=1.67%, sys=1.63%, ctx=1622, majf=0, minf=841104 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=78681/26152, short=0/0 lat (usec): 4=0.01%, 10=2.84%, 20=7.48%, 50=42.00%, 100=40.40% lat (usec): 250=7.06%, 500=0.02%, 1000=0.01% lat (msec): 2=0.01%, 4=0.01%, 50=0.01%, 100=0.01%, 250=0.01% lat (msec): 500=0.02%, 750=0.04%, 1000=0.04%, 2000=0.05%, >=2000=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=6615 read : io=3,072MiB, bw=16,819KiB/s, iops=421, runt=187027msec clat (usec): min=3, max=13,419, avg=45.24, stdev=117.86 bw (KiB/s) : min= 61, max=519744, per=44.65%, avg=29949.99, stdev=92145.55 write: io=1,024MiB, bw=5,606KiB/s, iops=140, runt=187028msec clat (usec): min=6, max=6,861K, avg=6946.61, stdev=111542.11 bw (KiB/s) : min= 0, max=173696, per=42.83%, avg=9577.69, stdev=30190.83 cpu : usr=1.45%, sys=1.60%, ctx=1672, majf=0, minf=840096 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=78739/26370, short=0/0 lat (usec): 4=0.01%, 10=3.62%, 20=8.64%, 50=45.32%, 100=39.58% lat (usec): 250=2.65%, 500=0.01%, 750=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=0.02%, 750=0.03%, 1000=0.03%, 2000=0.05% lat (msec): >=2000=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=6616 read : io=3,072MiB, bw=17,028KiB/s, iops=425, runt=184736msec clat (usec): min=5, max=2,575, avg=47.88, stdev=29.67 bw (KiB/s) : min= 11, max=489600, per=42.79%, avg=28698.35, stdev=84280.05 write: io=1,024MiB, bw=5,676KiB/s, iops=142, runt=184727msec clat (usec): min=5, max=5,431K, avg=6878.97, stdev=102484.83 bw (KiB/s) : min= 0, max=159008, per=42.40%, avg=9480.17, stdev=27901.55 cpu : usr=1.67%, sys=1.52%, ctx=1743, majf=0, minf=841098 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=78689/26267, short=0/0 lat (usec): 10=2.81%, 20=7.46%, 50=42.29%, 100=40.71%, 250=6.58% lat (usec): 500=0.01%, 750=0.01% lat (msec): 4=0.01%, 100=0.01%, 250=0.01%, 500=0.02%, 750=0.02% lat (msec): 1000=0.02%, 2000=0.07%, >=2000=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=6617 read : io=3,072MiB, bw=16,768KiB/s, iops=418, runt=187594msec clat (usec): min=3, max=5,548, avg=45.58, stdev=37.02 bw (KiB/s) : min= 23, max=524864, per=43.97%, avg=29490.60, stdev=91504.58 write: io=1,024MiB, bw=5,590KiB/s, iops=139, runt=187584msec clat (usec): min=6, max=5,676K, avg=7023.45, stdev=103491.95 bw (KiB/s) : min= 0, max=178336, per=42.29%, avg=9455.86, stdev=30043.28 cpu : usr=1.47%, sys=1.72%, ctx=1833, majf=0, minf=840422 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=78489/26156, short=0/0 lat (usec): 4=0.01%, 10=3.27%, 20=8.43%, 50=44.36%, 100=39.59% lat (usec): 250=4.10%, 500=0.06%, 750=0.01% lat (msec): 2=0.01%, 4=0.01%, 10=0.01%, 100=0.01%, 250=0.01% lat (msec): 500=0.03%, 750=0.03%, 1000=0.03%, 2000=0.05%, >=2000=0.01% Run status group 0 (all jobs): READ: io=4,096MiB, aggrb=244MiB/s, minb=244MiB/s, maxb=244MiB/s, mint=16818msec, maxt=16818msec WRITE: io=4,096MiB, aggrb=21,796KiB/s, minb=21,796KiB/s, maxb=21,796KiB/s, mint=192426msec, maxt=192426msec Run status group 1 (all jobs): READ: io=12,288MiB, aggrb=67,075KiB/s, minb=16,768KiB/s, maxb=17,028KiB/s, mint=184736msec, maxt=187594msec WRITE: io=4,096MiB, aggrb=22,360KiB/s, minb=5,590KiB/s, maxb=5,676KiB/s, mint=184727msec, maxt=187584msec Disk stats (read/write): sda: ios=17443/63833, merge=0/1783491, ticks=204127/73432631, in_queue=73636748, util=96.08% 54.91user 39.82system 10:57.96elapsed 14%CPU (0avgtext+0avgdata 0maxresident)k 8388920inputs+23215392outputs (27major+5466403minor)pagefaults 0swaps