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=6378 read : io=4,096MiB, bw=244MiB/s, iops=6,246, runt= 16782msec clat (usec): min=11, max=153, avg=30.96, stdev=13.99 bw (KiB/s) : min= 0, max=253280, per=97.14%, avg=242778.35, stdev=43129.20 write: io=4,096MiB, bw=16,495KiB/s, iops=412, runt=254264msec clat (usec): min=14, max=5,525K, avg=2187.51, stdev=42804.13 bw (KiB/s) : min= 0, max=47328, per=122.76%, avg=20248.66, stdev=15672.31 cpu : usr=15.09%, sys=1.98%, ctx=18341, majf=0, minf=2099257 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=104825/104825, short=0/0 lat (usec): 20=21.91%, 50=50.54%, 100=19.19%, 250=0.05%, 500=0.02% lat (usec): 750=0.04%, 1000=0.02% lat (msec): 2=0.33%, 4=2.41%, 10=4.82%, 20=0.15%, 50=0.15% lat (msec): 100=0.27%, 250=0.04%, 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=6744 read : io=3,072MiB, bw=16,519KiB/s, iops=412, runt=190428msec clat (usec): min=3, max=7,205, avg=48.04, stdev=40.85 bw (KiB/s) : min= 32, max=482848, per=57.03%, avg=37508.43, stdev=97139.71 write: io=1,024MiB, bw=5,507KiB/s, iops=137, runt=190386msec clat (usec): min=5, max=6,689K, avg=7127.05, stdev=144803.60 bw (KiB/s) : min= 0, max=162016, per=55.95%, avg=12265.30, stdev=32517.09 cpu : usr=1.57%, sys=1.56%, ctx=1228, majf=0, minf=842041 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=78535/26143, short=0/0 lat (usec): 4=0.01%, 10=2.70%, 20=7.41%, 50=42.76%, 100=41.00% lat (usec): 250=5.99%, 500=0.01%, 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=0.01%, 1000=0.02% lat (msec): 2000=0.03%, >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6745 read : io=3,072MiB, bw=16,441KiB/s, iops=410, runt=191332msec clat (usec): min=4, max=768K, avg=58.49, stdev=2748.11 bw (KiB/s) : min= 13, max=527968, per=52.41%, avg=34466.77, stdev=96854.36 write: io=1,024MiB, bw=5,480KiB/s, iops=137, runt=191332msec clat (usec): min=6, max=9,264K, avg=7102.19, stdev=140977.90 bw (KiB/s) : min= 0, max=167840, per=50.39%, avg=11045.48, stdev=31339.81 cpu : usr=1.48%, sys=1.61%, ctx=1580, majf=0, minf=842416 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=78623/26252, short=0/0 lat (usec): 10=3.03%, 20=6.95%, 50=44.82%, 100=40.25%, 250=4.77% lat (usec): 500=0.03%, 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% stresser: (groupid=1, jobs=1): err= 0: pid=6746 read : io=3,072MiB, bw=16,972KiB/s, iops=423, runt=185349msec clat (usec): min=5, max=34,059, avg=44.95, stdev=165.07 bw (KiB/s) : min= 2, max=569408, per=60.48%, avg=39772.37, stdev=108147.03 write: io=1,024MiB, bw=5,657KiB/s, iops=141, runt=185355msec clat (usec): min=3, max=6,606K, avg=6935.08, stdev=137496.53 bw (KiB/s) : min= 0, max=192288, per=56.45%, avg=12373.65, stdev=34663.97 cpu : usr=1.43%, sys=1.60%, ctx=1176, majf=0, minf=842284 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=78558/26177, short=0/0 lat (usec): 4=0.01%, 10=3.35%, 20=9.09%, 50=44.92%, 100=39.90% lat (usec): 250=2.60%, 500=0.01%, 750=0.01% lat (msec): 4=0.01%, 10=0.01%, 50=0.01%, 100=0.01%, 250=0.01% lat (msec): 500=0.02%, 750=0.03%, 1000=0.02%, 2000=0.03%, >=2000=0.02% stresser: (groupid=1, jobs=1): err= 0: pid=6747 read : io=3,072MiB, bw=17,208KiB/s, iops=430, runt=182806msec clat (usec): min=4, max=45,046, avg=50.09, stdev=283.84 bw (KiB/s) : min= 12, max=476832, per=55.33%, avg=36385.98, stdev=91335.45 write: io=1,024MiB, bw=5,720KiB/s, iops=143, runt=183312msec clat (usec): min=6, max=6,030K, avg=6821.26, stdev=131824.20 bw (KiB/s) : min= 0, max=163808, per=52.92%, avg=11601.43, stdev=29695.70 cpu : usr=1.66%, sys=1.59%, ctx=1360, majf=0, minf=841046 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=78665/26251, short=0/0 lat (usec): 10=2.77%, 20=7.34%, 50=43.24%, 100=40.12%, 250=6.38% lat (usec): 500=0.01%, 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=0.02%, 1000=0.02% lat (msec): 2000=0.03%, >=2000=0.02% Run status group 0 (all jobs): READ: io=4,096MiB, aggrb=244MiB/s, minb=244MiB/s, maxb=244MiB/s, mint=16782msec, maxt=16782msec WRITE: io=4,096MiB, aggrb=16,495KiB/s, minb=16,495KiB/s, maxb=16,495KiB/s, mint=254264msec, maxt=254264msec Run status group 1 (all jobs): READ: io=12,288MiB, aggrb=65,765KiB/s, minb=16,441KiB/s, maxb=17,208KiB/s, mint=182806msec, maxt=191332msec WRITE: io=4,096MiB, aggrb=21,921KiB/s, minb=5,480KiB/s, maxb=5,720KiB/s, mint=183312msec, maxt=191332msec Disk stats (read/write): sda: ios=17444/63764, merge=0/1786314, ticks=240485/76989812, in_queue=77231060, util=96.46% 54.79user 38.62system 12:26.78elapsed 12%CPU (0avgtext+0avgdata 0maxresident)k 8388912inputs+23235784outputs (27major+5471758minor)pagefaults 0swaps