SSD performance issue on new SER 5

siltronic

Hello,

I've just received for my birthday a nice SER 5 with Ryzen 5 5560U .

But I've noticed some big latency (database and other) with the intregrated nvme ssd.

I've installed an other 1to SSD SATA in the PC (on mounting point /ssd) for the comparaison.

I've started several bench, on big file it's ok :

Integrated SSD :

dd if=/dev/zero of=/root/testfile bs=1G count=1 oflag=direct

1+0 enregistrements lus

1+0 enregistrements écrits

1073741824 octets (1,1 GB, 1,0 GiB) copiés, 1,09347 s, 982 MB/s

The other 1to SATA SSD :

dd if=/dev/zero of=/ssd/testfile bs=1G count=1 oflag=direct

1+0 enregistrements lus

1+0 enregistrements écrits

1073741824 octets (1,1 GB, 1,0 GiB) copiés, 2,36882 s, 453 MB/s

BUT, on small file...

Integrated SSD :

time dd if=/dev/zero of=/root/datei bs=1M count=10240 oflag=direct

10240+0 enregistrements lus

10240+0 enregistrements écrits

10737418240 octets (11 GB, 10 GiB) copiés, 390,223 s, 27,5 MB/s

real        6m30,226s

user        0m0,049s

sys        0m3,492s

The other 1to SSD SATA installed in the PC  :

time dd if=/dev/zero of=/ssd/datei bs=1M count=10240 oflag=direct

10240+0 enregistrements lus

10240+0 enregistrements écrits

10737418240 octets (11 GB, 10 GiB) copiés, 25,413 s, 423 MB/s

real        0m25,416s

user        0m0,044s

sys        0m2,339s

--> So more than 6 min vs 25 sec to write 1M file  !

Could you help me ? Is there an issue with my integrated ssd ?

(The SMART is OK)

Thanks

Support-03

Hi there,

It is normal.
Although SSDs perform well when transferring large files, when transferring a large number of small files, the speed may decrease due to the need for more addressing and access operations. This is because the transfer of small files not only involves the actual transfer of the files, but also includes the management and addressing process of the file system.

siltronic

Hello,

Thanks for your response.

But :

- SSD are performing well small file, it was an issue with old hard drive, not SSD
- My Other SSD (SATA) run well in the same test case (see benchs) : 25 sec for writing 1M files vs more than 6 min for the integrated nvme SSD.

There is an issue with the nvme drive.

Thanks  

tuiguang4

HI there

Please update to the latest NVME SSD drivers .

May i know did you try different systems ? that might have different result .

And
you can email us with your SN picture and BIOS version .
So we would be able to know whether it is latest BIOS
Here`s how to check your BIOS version:
https://mega.nz/#F!yuISGa4I!s1bQQajKwnsEdzjqq4nopQ 

siltronic

Thanks for your response !

I was on Debian 12, so i've formated and tested on clean windows 11 (after full windows update)

And there is the result (D on left is the nvme, C on right is my 1to sata ssd)





It's very interesting to see here :

time dd if=/dev/zero of=datei bs=1M count=10240 oflag=direct
10240+0 records in
10240+0 records out
10737418240 bytes (11 GB, 10 GiB) copied, 6.44761 s, 1.7 GB/s


6sec vs 6min+ for the same test on debian (see previous post).

(bios version : FP655U509)


So there is an issue with the integrated nvme drive, but just on debian :)
Could you help me ?

Big thanks

tuiguang4

HI there
In such case, Debian 12 may not fully support integrated NVMe drivers, which could lead to performance instability.

Using a different kernel:
On Debian, you can try using different versions of the kernel, especially newer ones.
see if there is any improvement.

siltronic

Hello, thanks for your response.

Finally i've decided to buy a 990PRO to remplace the integrated drive.
(it's a Samsung 990 PRO with heatsink, yes it fit, but need to remove the SATA SSD and the metal cover of the SATA SSD case)

time dd if=/dev/zero of=datei bs=1M count=10240 oflag=direct
10240+0 enregistrements lus
10240+0 enregistrements écrits
10737418240 octets (11 GB, 10 GiB) copiés, 3,79721 s, 2,8 GB/s

real        0m3,810s
user        0m0,000s
sys        0m0,587s

It speaks by itself ^^ (on Debian 12, exactly same OS/kernel of my previous test)

Thanks for your help

tuiguang4

siltronic replied at 2024-07-23 03:29
Hello, thanks for your response.

Finally i've decided to buy a 990PRO to remplace the integrated dr ...

Thanks for letting us know .
that`s very good result.