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=26076 read : io=4,096MiB, bw=245MiB/s, iops=6,265, runt= 16716msec clat (usec): min=10, max=254, avg=30.26, stdev=13.86 bw (KiB/s) : min= 0, max=253568, per=97.12%, avg=243696.94, stdev=43217.51 write: io=4,096MiB, bw=21,522KiB/s, iops=537, runt=194876msec clat (usec): min=14, max=247K, avg=1620.74, stdev=10183.25 bw (KiB/s) : min= 0, max=67008, per=102.48%, avg=22054.81, stdev=21166.01 cpu : usr=18.93%, sys=2.78%, ctx=18110, 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=104736/104736, short=0/0 lat (usec): 20=22.96%, 50=52.14%, 100=16.52%, 250=0.29%, 500=0.12% lat (usec): 750=0.07%, 1000=0.04% lat (msec): 2=2.18%, 4=4.09%, 10=0.44%, 20=0.30%, 50=0.36% lat (msec): 100=0.37%, 250=0.13% stresser: (groupid=1, jobs=1): err= 0: pid=26272 read : io=3,072MiB, bw=17,737KiB/s, iops=442, runt=177353msec clat (usec): min=5, max=3,771, avg=46.14, stdev=31.70 bw (KiB/s) : min= 20, max=493408, per=38.60%, avg=27112.85, stdev=80220.93 write: io=1,024MiB, bw=5,498KiB/s, iops=137, runt=190702msec clat (usec): min=6, max=13,333K, avg=7117.95, stdev=123339.54 bw (KiB/s) : min= 0, max=168384, per=38.07%, avg=8373.29, stdev=25486.66 cpu : usr=1.57%, sys=1.53%, ctx=1546, majf=0, minf=840063 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=78553/26245, short=0/0 lat (usec): 10=2.81%, 20=9.52%, 50=43.61%, 100=39.89%, 250=3.98% lat (usec): 500=0.02% lat (msec): 2=0.01%, 4=0.01%, 20=0.01%, 250=0.01%, 500=0.02% lat (msec): 750=0.03%, 1000=0.03%, 2000=0.07%, >=2000=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=26273 read : io=3,072MiB, bw=17,706KiB/s, iops=440, runt=177661msec clat (usec): min=4, max=13,341, avg=45.43, stdev=125.07 bw (KiB/s) : min= 11, max=535840, per=42.97%, avg=30182.73, stdev=91058.81 write: io=1,024MiB, bw=5,902KiB/s, iops=147, runt=177652msec clat (usec): min=6, max=4,703K, avg=6623.71, stdev=106160.34 bw (KiB/s) : min= 0, max=181312, per=43.03%, avg=9463.39, stdev=29299.90 cpu : usr=1.64%, sys=1.37%, ctx=1756, majf=0, minf=839686 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=78327/26245, short=0/0 lat (usec): 10=2.63%, 20=10.09%, 50=45.29%, 100=39.94%, 250=1.88% lat (usec): 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=0.02%, 1000=0.03%, 2000=0.05% lat (msec): >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=26274 read : io=3,072MiB, bw=17,559KiB/s, iops=439, runt=179147msec clat (usec): min=4, max=2,929, avg=42.92, stdev=27.29 bw (KiB/s) : min= 9, max=567136, per=39.77%, avg=27934.41, stdev=90225.83 write: io=1,024MiB, bw=5,854KiB/s, iops=146, runt=179119msec clat (usec): min=6, max=3,088K, avg=6693.87, stdev=93752.93 bw (KiB/s) : min= 0, max=191648, per=40.20%, avg=8842.37, stdev=29485.92 cpu : usr=1.52%, sys=1.61%, ctx=1758, majf=0, minf=842707 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=78700/26214, short=0/0 lat (usec): 10=3.34%, 20=11.85%, 50=43.92%, 100=38.63%, 250=2.03% lat (usec): 500=0.05%, 750=0.01% lat (msec): 4=0.01%, 10=0.01%, 100=0.01%, 250=0.01%, 500=0.03% lat (msec): 750=0.03%, 1000=0.03%, 2000=0.06%, >=2000=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=26275 read : io=3,072MiB, bw=17,870KiB/s, iops=448, runt=176031msec clat (usec): min=3, max=241K, avg=50.49, stdev=1026.90 bw (KiB/s) : min= 8, max=506560, per=38.49%, avg=27033.70, stdev=81183.90 write: io=1,024MiB, bw=5,903KiB/s, iops=147, runt=177612msec clat (usec): min=2, max=3,860K, avg=6620.62, stdev=93209.72 bw (KiB/s) : min= 0, max=167872, per=38.79%, avg=8532.45, stdev=26345.25 cpu : usr=1.74%, sys=1.45%, ctx=1645, majf=0, minf=840329 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=78877/26186, short=0/0 lat (usec): 4=0.01%, 10=2.84%, 20=10.26%, 50=43.77%, 100=39.50% lat (usec): 250=3.45%, 500=0.01%, 1000=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=0.07% lat (msec): >=2000=0.01% Run status group 0 (all jobs): READ: io=4,096MiB, aggrb=245MiB/s, minb=245MiB/s, maxb=245MiB/s, mint=16716msec, maxt=16716msec WRITE: io=4,096MiB, aggrb=21,522KiB/s, minb=21,522KiB/s, maxb=21,522KiB/s, mint=194876msec, maxt=194876msec Run status group 1 (all jobs): READ: io=12,288MiB, aggrb=70,238KiB/s, minb=17,559KiB/s, maxb=17,870KiB/s, mint=176031msec, maxt=179147msec WRITE: io=4,096MiB, aggrb=21,994KiB/s, minb=5,498KiB/s, maxb=5,903KiB/s, mint=177612msec, maxt=190702msec Disk stats (read/write): sda: ios=17445/62688, merge=0/1781959, ticks=212658/80680846, in_queue=80893491, util=96.28% 54.64user 40.63system 11:11.23elapsed 14%CPU (0avgtext+0avgdata 0maxresident)k 8390680inputs+23193176outputs (35major+5466486minor)pagefaults 0swaps