mytest: (g=0): rw=read, bs=(R) 16.0KiB-16.0KiB, (W) 16.0KiB-16.0KiB, (T) 16.0KiB-16.0KiB, ioengine=libaio, iodepth=1 fio-3.35 Starting 1 process mytest: (groupid=0, jobs=1): err= 0: pid=3923: Thu Sep 7 10:09:20 2023 read: IOPS=98.5k, BW=1540MiB/s (1614MB/s)(30.1GiB/20001msec) slat (nsec): min=1618, max=6091.8k, avg=7004.46, stdev=26956.26 clat (nsec): min=409, max=76764, avg=765.39, stdev=696.22 lat (usec): min=2, max=6093, avg= 7.77, stdev=27.01 clat percentiles (nsec): | 1.00th=[ 430], 5.00th=[ 438], 10.00th=[ 442], 20.00th=[ 532], | 30.00th=[ 540], 40.00th=[ 548], 50.00th=[ 548], 60.00th=[ 860], | 70.00th=[ 884], 80.00th=[ 900], 90.00th=[ 932], 95.00th=[ 1144], | 99.00th=[ 4768], 99.50th=[ 5984], 99.90th=[ 8768], 99.95th=[10048], | 99.99th=[12096] bw ( MiB/s): min= 1000, max= 1989, per=99.40%, avg=1530.34, stdev=287.51, samples=39 iops : min=64000, max=127296, avg=97941.74, stdev=18400.58, samples=39 lat (nsec) : 500=17.27%, 750=40.38%, 1000=35.25% lat (usec) : 2=5.40%, 4=0.40%, 10=1.25%, 20=0.05%, 50=0.01% lat (usec) : 100=0.01% cpu : usr=7.95%, sys=88.42%, ctx=1467, majf=0, minf=13 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 rwts: total=1970793,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=1 Run status group 0 (all jobs): READ: bw=1540MiB/s (1614MB/s), 1540MiB/s-1540MiB/s (1614MB/s-1614MB/s), io=30.1GiB (32.3GB), run=20001-20001msec