fixed-rate-submit: (g=0): rw=read, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=libaio, iodepth=32 fio-3.28 Starting 1 process fixed-rate-submit: (groupid=0, jobs=1): err= 0: pid=35185: Fri Jan 13 12:40:13 2023 read: IOPS=1000, BW=4000KiB/s (4096kB/s)(128MiB/32768msec) slat (usec): min=20, max=386, avg=80.45, stdev=64.25 clat (usec): min=6, max=15768, avg=93.62, stdev=233.84 lat (usec): min=39, max=15809, avg=175.22, stdev=235.81 clat percentiles (usec): | 1.00th=[ 18], 5.00th=[ 19], 10.00th=[ 20], 20.00th=[ 28], | 30.00th=[ 28], 40.00th=[ 30], 50.00th=[ 129], 60.00th=[ 133], | 70.00th=[ 135], 80.00th=[ 145], 90.00th=[ 151], 95.00th=[ 157], | 99.00th=[ 196], 99.50th=[ 208], 99.90th=[ 262], 99.95th=[ 4686], | 99.99th=[12649] bw ( KiB/s): min= 4000, max= 4008, per=100.00%, avg=4003.20, stdev= 3.95, samples=65 iops : min= 1000, max= 1002, avg=1000.80, stdev= 0.99, samples=65 lat (usec) : 10=0.28%, 20=13.42%, 50=31.73%, 100=0.74%, 250=53.73% lat (usec) : 500=0.02%, 750=0.01% lat (msec) : 2=0.01%, 4=0.02%, 10=0.04%, 20=0.02% cpu : usr=4.08%, sys=0.00%, ctx=32768, majf=0, minf=3 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=32768,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=32 Run status group 0 (all jobs): READ: bw=4000KiB/s (4096kB/s), 4000KiB/s-4000KiB/s (4096kB/s-4096kB/s), io=128MiB (134MB), run=32768-32768msec