poisson-rate-submit: (g=0): rw=randread, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=libaio, iodepth=32 fio-3.28 Starting 1 process poisson-rate-submit: Laying out IO file (1 file / 128MiB) poisson-rate-submit: (groupid=0, jobs=1): err= 0: pid=61948: Thu Jan 12 17:09:19 2023 read: IOPS=49, BW=199KiB/s (204kB/s)(128MiB/658413msec) slat (usec): min=4, max=1586, avg=203.95, stdev=65.08 clat (usec): min=7, max=10236, avg=254.48, stdev=452.76 lat (usec): min=42, max=10290, avg=460.81, stdev=461.01 clat percentiles (usec): | 1.00th=[ 82], 5.00th=[ 125], 10.00th=[ 167], 20.00th=[ 202], | 30.00th=[ 212], 40.00th=[ 219], 50.00th=[ 225], 60.00th=[ 229], | 70.00th=[ 233], 80.00th=[ 237], 90.00th=[ 243], 95.00th=[ 262], | 99.00th=[ 914], 99.50th=[ 2343], 99.90th=[ 8979], 99.95th=[ 8979], | 99.99th=[ 9241] bw ( KiB/s): min= 72, max= 368, per=99.96%, avg=199.04, stdev=39.23, samples=1316 iops : min= 18, max= 92, avg=49.76, stdev= 9.81, samples=1316 lat (usec) : 10=0.01%, 20=0.01%, 50=0.20%, 100=1.61%, 250=91.13% lat (usec) : 500=4.75%, 750=0.55%, 1000=1.00% lat (msec) : 2=0.20%, 4=0.23%, 10=0.30%, 20=0.01% cpu : usr=0.17%, sys=0.22%, ctx=32410, majf=0, minf=6 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=199KiB/s (204kB/s), 199KiB/s-199KiB/s (204kB/s-204kB/s), io=128MiB (134MB), run=658413-658413msec Disk stats (read/write): nvme0n1: ios=32990/870, merge=29/907, ticks=6182/4565, in_queue=10836, util=18.77%