Slow download on NAS

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Beg95
Posts: 2
Joined: Fri Jun 02, 2023 8:07 am

Slow download on NAS

Post by Beg95 »

This problem appeared

iMac M1, Mac OS 13.4, Transmission 4.0.3
Internet speed 30 Mb/s
When I download to a local computer - I get the same 30Mb/sec
But when I download to a NAS connected by 1Gb - a maximum of 10-12Mb/s
and the neighboring computer on the network is the same 10-12 Mb/s

Downloading the same torrent to NAS using qbittorrent - 30-33Mb/s

It seems that the program simply does not know how to copy over the network at a speed of more than 100Mbit

Any ideas how this can be fixed?

Thank you
darmok
Posts: 119
Joined: Tue Oct 16, 2007 9:14 pm
Location: New Jersey, USA

Re: Slow download on NAS

Post by darmok »

Your connection to the NAS and that neighboring machine is with SMB? Apple's SMB performance sux.
Beg95
Posts: 2
Joined: Fri Jun 02, 2023 8:07 am

Re: Slow download on NAS

Post by Beg95 »

Simple copying to NAS and other computers goes at a speed of 80-90Mb/s
So the problem here is not in SMB
darmok
Posts: 119
Joined: Tue Oct 16, 2007 9:14 pm
Location: New Jersey, USA

Re: Slow download on NAS

Post by darmok »

hum. I've been playing with both a NAS and a locally attached RAID box. Leeching to a local USB3 drive is running around 80 Mbps. Then I'm seeing about a 10% speed drop to the local RAID and maybe -20% to the NAS. (this over a 450 Mbps wifi and a 100/20 Mbps Comcast coax connection). qBittorrent is seeing about -10% to the NAS.

Normally, I'd write it off as fragmentation performance, but I'm not liking the numbers either way. I'm going to optimize the NAS and see if there's a difference, then dig into the code to see if there's anything obvious slowing things down.

Aside -- Really shouldn't be torrenting to RAID arrays. Torrenting is by nature very fragmented, the opposite of what these arrays are designed for.
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