fio --name=randrw --rw=randrw --direct=1 --ioengine=libaio --bs=4k --numjobs=8 --rwmixread=90 --size=1G --runtime=60 --group_reporting
randrw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=libaio, iodepth=1
...
fio-3.19
Starting 8 processes
randrw: Laying out IO file (1 file / 1024MiB)
randrw: Laying out IO file (1 file / 1024MiB)
randrw: Laying out IO file (1 file / 1024MiB)
randrw: Laying out IO file (1 file / 1024MiB)
randrw: Laying out IO file (1 file / 1024MiB)
randrw: Laying out IO file (1 file / 1024MiB)
randrw: Laying out IO file (1 file / 1024MiB)
randrw: Laying out IO file (1 file / 1024MiB)
Jobs: 3 (f=3): [m(3),_(5)][74.4%][r=55.6MiB/s,w=6337KiB/s][r=14.2k,w=1584 IOPS][eta 00m:21s]
randrw: (groupid=0, jobs=8): err= 0: pid=100641: Wed Apr  5 08:22:23 2023
  read: IOPS=29.7k, BW=116MiB/s (121MB/s)(6951MiB/60001msec)
    slat (nsec): min=1632, max=8376.6k, avg=3752.36, stdev=19906.14
    clat (usec): min=89, max=10825, avg=221.75, stdev=164.96
     lat (usec): min=96, max=10830, avg=225.57, stdev=166.21
    clat percentiles (usec):
     |  1.00th=[  112],  5.00th=[  120], 10.00th=[  127], 20.00th=[  139],
     | 30.00th=[  153], 40.00th=[  167], 50.00th=[  180], 60.00th=[  192],
     | 70.00th=[  210], 80.00th=[  243], 90.00th=[  433], 95.00th=[  490],
     | 99.00th=[  603], 99.50th=[  693], 99.90th=[ 1745], 99.95th=[ 2868],
     | 99.99th=[ 5407]
   bw (  KiB/s): min=98088, max=158160, per=100.00%, avg=127551.71, stdev=2193.20, samples=893
   iops        : min=24522, max=39540, avg=31887.86, stdev=548.30, samples=893
  write: IOPS=3301, BW=12.9MiB/s (13.5MB/s)(774MiB/60001msec); 0 zone resets
    slat (nsec): min=1721, max=5612.3k, avg=4984.46, stdev=22173.68
    clat (usec): min=131, max=8398, avg=233.30, stdev=121.08
     lat (usec): min=135, max=8404, avg=238.37, stdev=123.13
    clat percentiles (usec):
     |  1.00th=[  155],  5.00th=[  165], 10.00th=[  174], 20.00th=[  188],
     | 30.00th=[  200], 40.00th=[  212], 50.00th=[  223], 60.00th=[  235],
     | 70.00th=[  249], 80.00th=[  265], 90.00th=[  293], 95.00th=[  318],
     | 99.00th=[  392], 99.50th=[  441], 99.90th=[ 1532], 99.95th=[ 3064],
     | 99.99th=[ 5211]
   bw (  KiB/s): min= 9904, max=18704, per=100.00%, avg=14194.07, stdev=272.92, samples=893
   iops        : min= 2476, max= 4676, avg=3548.46, stdev=68.24, samples=893
  lat (usec)   : 100=0.01%, 250=79.93%, 500=16.18%, 750=3.53%, 1000=0.15%
  lat (msec)   : 2=0.12%, 4=0.06%, 10=0.02%, 20=0.01%
  cpu          : usr=0.65%, sys=1.88%, ctx=1977682, majf=0, minf=113
  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=1779438,198078,0,0 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=116MiB/s (121MB/s), 116MiB/s-116MiB/s (121MB/s-121MB/s), io=6951MiB (7289MB), run=60001-60001msec
  WRITE: bw=12.9MiB/s (13.5MB/s), 12.9MiB/s-12.9MiB/s (13.5MB/s-13.5MB/s), io=774MiB (811MB), run=60001-60001msec

Disk stats (read/write):
    dm-2: ios=1779313/198103, merge=0/0, ticks=392478/45634, in_queue=438112, util=99.89%, aggrios=1779607/198109, aggrmerge=0/8, aggrticks=392662/45785, aggrin_queue=438448, aggrutil=99.83%
  sda: ios=1779607/198109, merge=0/8, ticks=392662/45785, in_queue=438448, util=99.83%
  
  
  
[root@localhost telecor]# sync; dd if=/dev/zero of=tempfile bs=1M count=1024; sync
1024+0 records in
1024+0 records out
1073741824 bytes (1.1 GB, 1.0 GiB) copied, 0.678577 s, 1.6 GB/s




[root@localhost telecor]# sudo hdparm -t /dev/sda1
/dev/sda1:
 Timing buffered disk reads: 1024 MB in  0.38 seconds = 2688.93 MB/sec
 
telecor#lscpu
Architecture:        x86_64
CPU op-mode(s):      32-bit, 64-bit
Byte Order:          Little Endian
CPU(s):              4
On-line CPU(s) list: 0-3
Thread(s) per core:  1
Core(s) per socket:  1
Socket(s):           4
NUMA node(s):        1
Vendor ID:           GenuineIntel
BIOS Vendor ID:      GenuineIntel
CPU family:          6
Model:               85
Model name:          Intel(R) Xeon(R) Gold 6256 CPU @ 3.60GHz
BIOS Model name:     Intel(R) Xeon(R) Gold 6256 CPU @ 3.60GHz
Stepping:            7
CPU MHz:             3591.562
BogoMIPS:            7183.12
Hypervisor vendor:   VMware
Virtualization type: full
L1d cache:           32K
L1i cache:           32K
L2 cache:            1024K
L3 cache:            33792K
NUMA node0 CPU(s):   0-3
Flags:               fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov