stresser: (g=0): rw=write, bs=16K-64K/16K-64K, ioengine=sync, iodepth=1 stresser: (g=1): rw=randrw, bs=16K-64K/16K-64K, ioengine=sync, iodepth=4 ... stresser: (g=1): rw=randrw, bs=16K-64K/16K-64K, ioengine=sync, iodepth=4 Starting 5 processes stresser: (groupid=0, jobs=1): err= 0: pid=6269 read : io=1,024MiB, bw=88,517KiB/s, iops=2,209, runt= 11846msec clat (usec): min=6, max=173K, avg=309.44, stdev=2203.65 bw (KiB/s) : min= 1, max=132096, per=99.36%, avg=87953.52, stdev=30870.38 write: io=1,024MiB, bw=41,159KiB/s, iops=1,027, runt= 25476msec clat (usec): min=20, max=664K, avg=732.68, stdev=14159.01 bw (KiB/s) : min= 0, max=115712, per=110.42%, avg=45447.86, stdev=44453.82 cpu : usr=24.90%, sys=7.60%, ctx=4677, majf=0, minf=565 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=26171/26171, short=0/0 lat (usec): 10=11.45%, 20=13.08%, 50=39.77%, 100=26.31%, 250=0.98% lat (usec): 500=0.77%, 750=0.30%, 1000=0.50% lat (msec): 2=4.54%, 4=1.78%, 10=0.32%, 20=0.04%, 50=0.01% lat (msec): 100=0.02%, 250=0.07%, 500=0.04%, 750=0.01% stresser: (groupid=1, jobs=1): err= 0: pid=6298 read : io=768MiB, bw=4,195KiB/s, iops=104, runt=187437msec clat (usec): min=5, max=3,346K, avg=9508.53, stdev=80979.54 bw (KiB/s) : min= 4, max=129795, per=36.84%, avg=5614.79, stdev=10865.56 write: io=256MiB, bw=1,398KiB/s, iops=34, runt=187455msec clat (usec): min=14, max=3,059, avg=53.80, stdev=45.06 bw (KiB/s) : min= 0, max=39968, per=40.92%, avg=2078.97, stdev=3707.40 cpu : usr=0.06%, sys=0.89%, ctx=32450, majf=0, minf=149 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=19632/6538, short=0/0 lat (usec): 10=9.08%, 20=19.05%, 50=38.87%, 100=12.71%, 250=0.89% lat (usec): 500=0.07%, 750=0.24%, 1000=0.26% lat (msec): 2=0.78%, 4=2.49%, 10=4.85%, 20=5.87%, 50=3.50% lat (msec): 100=0.47%, 250=0.32%, 500=0.28%, 750=0.11%, 1000=0.06% lat (msec): 2000=0.07%, >=2000=0.03% stresser: (groupid=1, jobs=1): err= 0: pid=6299 read : io=768MiB, bw=3,932KiB/s, iops=98, runt=199988msec clat (usec): min=5, max=6,264K, avg=10102.09, stdev=108798.41 bw (KiB/s) : min= 16, max=136335, per=37.01%, avg=5640.77, stdev=10990.42 write: io=256MiB, bw=1,310KiB/s, iops=32, runt=199989msec clat (usec): min=14, max=26,737, avg=55.54, stdev=334.13 bw (KiB/s) : min= 0, max=47236, per=41.56%, avg=2111.03, stdev=4026.72 cpu : usr=0.06%, sys=0.78%, ctx=33048, majf=0, minf=161 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=19637/6585, short=0/0 lat (usec): 10=9.35%, 20=19.47%, 50=39.34%, 100=11.91%, 250=0.60% lat (usec): 500=0.05%, 750=0.16%, 1000=0.28% lat (msec): 2=0.83%, 4=2.57%, 10=5.09%, 20=5.67%, 50=3.39% lat (msec): 100=0.43%, 250=0.34%, 500=0.26%, 750=0.09%, 1000=0.03% lat (msec): 2000=0.10%, >=2000=0.04% stresser: (groupid=1, jobs=1): err= 0: pid=6300 read : io=768MiB, bw=3,810KiB/s, iops=95, runt=206387msec clat (usec): min=7, max=8,054K, avg=10437.43, stdev=122814.54 bw (KiB/s) : min= 15, max=105790, per=36.70%, avg=5593.82, stdev=9978.51 write: io=256MiB, bw=1,270KiB/s, iops=31, runt=206386msec clat (usec): min=14, max=4,504, avg=54.45, stdev=79.13 bw (KiB/s) : min= 0, max=33540, per=40.45%, avg=2055.09, stdev=3427.98 cpu : usr=0.05%, sys=0.77%, ctx=31402, majf=0, minf=172 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=19698/6520, short=0/0 lat (usec): 10=8.48%, 20=20.30%, 50=38.73%, 100=12.58%, 250=0.93% lat (usec): 500=0.05%, 750=0.29%, 1000=0.25% lat (msec): 2=0.71%, 4=2.41%, 10=4.95%, 20=5.67%, 50=3.39% lat (msec): 100=0.42%, 250=0.31%, 500=0.24%, 750=0.11%, 1000=0.04% lat (msec): 2000=0.07%, >=2000=0.06% stresser: (groupid=1, jobs=1): err= 0: pid=6301 read : io=768MiB, bw=3,843KiB/s, iops=96, runt=204640msec clat (usec): min=5, max=8,311K, avg=10188.72, stdev=118453.79 bw (KiB/s) : min= 18, max=116418, per=36.62%, avg=5581.60, stdev=11322.42 write: io=256MiB, bw=1,281KiB/s, iops=32, runt=204642msec clat (usec): min=14, max=1,055K, avg=442.51, stdev=18553.50 bw (KiB/s) : min= 0, max=36916, per=38.30%, avg=1945.56, stdev=3362.22 cpu : usr=0.04%, sys=0.77%, ctx=32555, majf=0, minf=169 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=19667/6617, short=0/0 lat (usec): 10=9.25%, 20=20.37%, 50=38.94%, 100=11.62%, 250=0.74% lat (usec): 500=0.04%, 750=0.19%, 1000=0.25% lat (msec): 2=0.84%, 4=2.45%, 10=4.79%, 20=5.68%, 50=3.49% lat (msec): 100=0.48%, 250=0.38%, 500=0.22%, 750=0.08%, 1000=0.06% lat (msec): 2000=0.07%, >=2000=0.05% Run status group 0 (all jobs): READ: io=1,024MiB, aggrb=88,519KiB/s, minb=88,519KiB/s, maxb=88,519KiB/s, mint=11846msec, maxt=11846msec WRITE: io=1,024MiB, aggrb=41,160KiB/s, minb=41,160KiB/s, maxb=41,160KiB/s, mint=25476msec, maxt=25476msec Run status group 1 (all jobs): READ: io=3,072MiB, aggrb=15,241KiB/s, minb=3,810KiB/s, maxb=4,195KiB/s, mint=187437msec, maxt=206387msec WRITE: io=1,024MiB, aggrb=5,080KiB/s, minb=1,270KiB/s, maxb=1,398KiB/s, mint=187455msec, maxt=206386msec Disk stats (read/write): sda: ios=133486/25035, merge=1/491766, ticks=813619/4814716, in_queue=5628241, util=97.10% 10.05user 9.63system 4:05.29elapsed 8%CPU (0avgtext+0avgdata 0maxresident)k 3129504inputs+4138752outputs (27major+4320minor)pagefaults 0swaps