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Samsumg 990 PRO file operations performance

(Topic created on: 26-01-2024 01:43 PM)
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JoniJnm
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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):

 

samsumg-990-pro-kdiskmark.png

 

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

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JoniJnm
First Poster
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Ok, seems like Samsumgs NMVe have some problems in linux: https://bugs.mysql.com/bug.php?id=93734

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