Hi, I bought a Samsumg 990 PRO and the file operations performace are not good, I don't know why.
I'm using ubuntu 22:
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 22.04.3 LTS
Release: 22.04
Codename: jammy
$ uname -a
Linux pc 6.5.0-15-generic #15~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Fri Jan 12 18:54:30 UTC 2 x86_64 x86_64 x86_64 GNU/Linux
And this is the performance:
$ mkdir -p /tmp/test
$ cd /tmp/test
$ sysbench fileio --file-total-size=50G prepare
$ sysbench --file-total-size=50G --file-test-mode=rndrw --file-extra-flags=direct fileio run
sysbench 1.0.20 (using system LuaJIT 2.1.0-beta3)
Running the test with following options:
Number of threads: 1
Initializing random number generator from current time
Extra file open flags: directio
128 files, 400MiB each
50GiB total file size
Block size 16KiB
Number of IO requests: 0
Read/Write ratio for combined random IO test: 1.50
Periodic FSYNC enabled, calling fsync() each 100 requests.
Calling fsync() at the end of test, Enabled.
Using synchronous I/O mode
Doing random r/w test
Initializing worker threads...
Threads started!
File operations:
reads/s: 846.57
writes/s: 564.38
fsyncs/s: 1812.67
Throughput:
read, MiB/s: 13.23
written, MiB/s: 8.82
General statistics:
total time: 10.0637s
total number of events: 32315
Latency (ms):
min: 0.02
avg: 0.31
max: 6.13
95th percentile: 0.46
sum: 9993.21
Threads fairness:
events (avg/stddev): 32315.0000/0.00
execution time (avg/stddev): 9.9932/0.00
Do you know why the file operations is so low?
I attach also a kdiskmark report (seems to be ok):
My components:
* Asus TUF Gaming B650-PLUS
* Samsumg 990 PRO
* Gigabyte UD850GM 80 plus 850W
* Powercolor 7900 XT
* AMD Ryzen 7 7800X3D
* Corsair Vengence 2x16GB 6000 CL30
