Slow SMB transfer NAS->PC - fast to PC->NAS - Win11Pro

Hello,

ive got this situation. I have small server with AMD Ryzen 3550H with 16GB RAM 1TB SSD + 4 TB HDD SATA.

Right now i have connection thru LAN 1Gbit.

And my problem i have looks like this:

1. SENDING FILE TO OMV - is very quick - full 1gbit
2. DOWNOLAD SMALL FILES <1GB FROM OMV - is also very qucik (if file is small)
3. DOWNLOAD BIG FILES >1GB FROM OMV - is very slow (more-less half of 1Gbit).

Ive add another NIC (ASUS USB C2500 2,5Gbit) to my server - and situation is the same.

1. UPLOAD: 288MB/s
2. DOWNOLAD THE SAME FILE: 288MB/s
3. DOWNLOAD OTHER FILE: ~50MB/s

Ive tried almost every tip from the forum and it still not getting me even closer to the solution

Maybe someone could help me please?

It looks like there is come "cache" or something like that - but i dont know where to find it and how it works

Maybe i should update USB 2.5gbit NIC drivers... but how?

ADD INFO:

• There are few dockers from OMV-EXTRAS (radar,sonad,qbit, adguard home) - but shutting them doesnt give any effect.
• iperf3 shows me that i have faster connection OMV->PC than PC->OMV - but my transfers shows me completly diffent results
• my HDD on NAS is 80% full - that could be the cause?
• Whole system is in actual versions (apt-get update && apt-get upgrade).

Thanks for your help.

Zitat von mi-hol

Listing the tips would make a great starting point as nothing about networking infrastructure (cables, router, switch) and clients is mentioned

Ok so my network looks like this:

> DSL

-> ROUTER (TP LINK 1042 N)

---> SWITCH TP-LINK 1gbit
------> NAS OMV

------> PC1

------> PC2

------> PC3

------> AP

------> TV

------> XBOX

------> PHONE1

------> PHONE2

Im using cables Cat 5e.

I wanted to add 2.5gbit NIC (over USB) but everything slows down

Zitat von mi-hol

1. I'm unable to find specification for the router model provided, only for model TL-WR1043ND

My router and switch uses 1Gbit right now. But ive attached additional 2.5Gbit NIC (USB) direct to my serwer and PC which both have 2.5gbit. When im sending to NAS - i have 2.35Gbit real transfer (iperf3) - but when i try do the same FROM NAS TO PC - it shows me only 1.35Gbit - and data transfer dropped to ~50MB/s (less than half of 1Gbit).

Zitat von mi-hol

2. What benefit would a 2.5gBit NIC offer when all other components are limited to 1gBit?

Cause if this scenario work i will change whole SWTICH to 2.5gbit and connect my PC to switch - not to NAS directly.

Zitat von mi-hol

3. from above info I would understand that all 9 client devices are wired to SWITCH TP-LINK 1gbit, is this correct?

All clients yes - but my personal PC is connected directly to NAS thru 2.5gbit NIC (USB).

Right now my PC is connected to NAS thru 2.5gbit NIC directly (not to 1Gbit SWITCH). And iperf3 shows me that this connection is working.

But i dont know why the transfers are so weird (288MB/s UPLOAD to NAS - ~50MB/s DOWNLOAD from NAS).

Zitat von raulfg3

1: https://www.tp-link.com/ar/hom…/wifi-router/tl-wr1043nd/ = use 1GB LAN Ports

Yes - thats true - but i have direct 2.5gbit LAN connect to NAS.

what is weird ipref3 shows me that
NAS -> PC - 2.35gbit

PC -> NAS - 1.35gbit

...which is opposite of that what i see in real transfers...

i know that my network is not "by the book" but... should it work faster?

Zitat von andrzejls

Your router is 300Mbps = 0.0375 GBit

Router is only before the NAS.
My PC i attached direct to the NAS (ive got second NIC 2.5gbit) - not to the router.

Router is not the part of this connection.

Zitat von B3rnd

I think you're getting the units a little mixed up.

You have a download speed of 288 MB/s. Do you really mean MB=MegaByte or is it MB=MegaBit. According to my understanding it would be MegaByte.

I mean MEGABYTES for sure. Thats why its so weird.

Uploading from PC -> NAS 1GB file is transferred with 288 megabytes/s.
Downloading the same file is also with 288 megabytes/s (which is max of 2.5gbit connection).
But when i find some "older" file on NAS (same ~1GB size) the download speed drops to 50-60 megabytes/s.

Zitat von B3rnd

In principle, copying many small files to the NAS takes much longer than copying one large file. And in the beginning the file operations are always written to the cache, you don't have the file on the disk yet, hence these abstrusively high speeds. The speed that happens with a large file after the cache is filled is your network speed.

Your network hardware and speed level is shown in the CLI by the command

inxi -Fz

Is this cache is depending on NAS RAM?

Thanks - i will try this.

Zitat von B3rnd

...

Your network hardware and speed level is shown in the CLI by the command

inxi -Fz

On CLI OMV NAS this command gives me only an error

Zitat von mi-hol

this would mean that previous information regarding network topology

was incorrect. Back to asking more question in order to understand the setup

1. Is there a cable or wireless connection from NAS to switch and/or router?
2. Is there a cable or wireless connection from PC1 to switch and/or router?

Sorry for misleading

One more time with little update

->DSL

-----> ROUTER

--- 1Gbit ---> SWITCH

------ 1Gbit ------> PC1

------ 1Gbit ------> PC2

------ 1Gbit ------> PC3

------ 1Gbit ------> NAS (NIC1)

NAS (NIC2) >--------- 2,5Gbit ---------> PC4

i have 2 NIC's on my NAS

---> 1gbit (to SWITCH)

---> 2.5gbit (direct connect to my PC4)

event if i cut off the 1Gbit connection from SWITCH and leave only direct connection NAS>---2.5gbit---<PC i have similar problems with real life transfers.

Zitat von mi-hol

in this exact setup output of inxi -Nni  on both devices (NAS & PC4) would help to find the root cause

THIS IS FROM NAS POINT OF VIEW
:Network: Device-1: Intel 82371AB/EB/MB PIIX4 ACPI type: network bridge driver: piix4_smbus

Device-2: Red Hat Virtio network driver: virtio-pci

IF: ens18 state: up speed: -1 duplex: unknown mac: 5a:d0:50:13:44:b0

IP v4: 192.168.1.118/24 scope: global

IF-ID-1: br-0e9b81674364 state: down mac: 02:42:21:3d:48:a2

IP v4: 172.22.0.1/16 scope: global

IF-ID-2: br-4cf1b01faf45 state: up speed: 10000 Mbps duplex: unknown mac: 02:42:72:f3:ca:3f

IP v4: 172.19.0.1/16 scope: global

IP v6: fe80::42:72ff:fef3:ca3f/64 scope: link

IF-ID-3: br-6954491a158d state: up speed: 10000 Mbps duplex: unknown mac: 02:42:0f:c9:27:04

IP v4: 172.21.0.1/16 scope: global

IP v6: fe80::42:fff:fec9:2704/64 scope: link

IF-ID-4: br-86e765d1cc2a state: up speed: 10000 Mbps duplex: unknown mac: 02:42:bb:0b:5d:95

IP v4: 172.20.0.1/16 scope: global

IP v6: fe80::42:bbff:fe0b:5d95/64 scope: link

IF-ID-5: br-99f59a7f18e2 state: up speed: 10000 Mbps duplex: unknown mac: 02:42:d9:ec:06:7b

IP v4: 172.18.0.1/16 scope: global

IP v6: fe80::42:d9ff:feec:67b/64 scope: link

IF-ID-6: br-da22d9ffe1f1 state: up speed: 10000 Mbps duplex: unknown mac: 02:42:fc:06:cc:28

IP v4: 192.168.160.1/20 scope: global

IP v6: fe80::42:fcff:fe06:cc28/64 scope: link

IF-ID-7: docker0 state: up speed: 10000 Mbps duplex: unknown mac: 02:42:86:9c:2c:70

IP v4: 172.17.0.1/16 scope: global

IP v6: fe80::42:86ff:fe9c:2c70/64 scope: link

IF-ID-8: veth66dbd66 state: up speed: 10000 Mbps duplex: full mac: 42:0c:b4:49:6e:ee

IF-ID-9: veth8e6fda7 state: up speed: 10000 Mbps duplex: full mac: 42:2f:c3:9a:bc:f0

IF-ID-10: vethb7304a7 state: up speed: 10000 Mbps duplex: full mac: 9a:3c:39:ba:2c:98

IF-ID-11: vethbea2a7d state: up speed: 10000 Mbps duplex: full mac: ce:53:25:9f:39:03

IF-ID-12: vethf1cff4f state: up speed: 10000 Mbps duplex: full mac: 92:0d:2f:9d:b3:1e

IF-ID-13: vethfe6fb10 state: up speed: 10000 Mbps duplex: full mac: fa:e2:ff:8e:bc:93

WAN IP: 94.232.39.186

Zitat von mi-hol

in this exact setup output of inxi -Nni  on both devices (NAS & PC4) would help to find the root cause

How i can do it from WIN11Pro?