On 10/01/2021 04:46, paul lee wrote:
> I had setup an Open Media Vault on a Raspberry Pi 3, which I know doesn't
have
> gigabit ethernet...
>
> I use cheap USB Hard Drives, 2 x 4TB Seagates...
>
> I run a PLEX server and, although I'm sure I don't have awesome 4k content
> [Probably not even all 1080p!], it seems to work just fine for streaming to
ONE
> television at a time.
>
> However, both on my Samba Shares and NFS Shares, I'm getting around 10mb/Sec
> transfer rates. Sometimes they'll bump up to +/-18mb but not often; I'm sure
> this is just the particular instance reporting wrong.... I'm around 10-12mb
> constantly.

Is that megabits or megaBytes per second?

> So... I thought my bottle-neck was the Pi, and not having gigabit - I threw a
> Pi 4 8gbRAM model at it today... I reinstalled fully, and setup from scratch.
> I've only pushed over one of my drives YET because... wouldn't ya know it,
the
> transfer rate is the EXACT same as on the Pi 3!!

I'm using a 4B with a USB 3.1 HD. The HD does about 100MB/s (megaBytes)
read/write locally, and using Cyrstal Diskmark over Samba its showing
maximum transfer rate of 72MB/s read and 58MB/s write. When backing up
from my other Pis over NFS I'm seeing rates of 40-50MB/s.

Check you are getting 1000Mb/s Full duplex using the command:-
ethtool eth0

Also try another Ethernet cable (at least Cat 5e), as it wasn't until I
started using that Pi as a NAS did I find its upload speed was very
poor. Up to then it was only used for web browsing and its download
speed was fine. I think the cable had been kinked, replacing it restored
the upload speed.

---druck

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