Networking MBP and Synology

[carfac]

OK, I am a REAL networking dumby!

I have an M1 MBP connected to a Caldigit Hub (with 2.5 g networking.) This connects into my wall Cat6 with a 20 foot run to my switch. Switch is a TrendNet 6 Port 10G switch. MY 2 Synologys have a 10G net card, one each into the 10G ports on switch. The MBP comes in on a 2.5 gig port. I have 1 gig fiber in also.

So all good.

I run open speed test between MBP and SYnology. DOWN IS 972 MBPS AND UP IS 2315 MBPS

So I can tell the 2.5 gig connect works at least up.... but why not down too?

And when I run a network speed test I get:

Okola:564Mbps down 664 up
Speedcheck 326 Down 116 Mbps up

Im thinking about uping my fiber to 2.5 gig but not if the throughput stays low.

Any suggestions on how to get some of those speeds up, or what I am doing wrong? Or am I expecting too much? I see the synology up speed and I think I should be getting that everywhere.... or at least up to 950Mbps in Internet or so...

 

[velocityg4]

How large are the files you are trying to transfer? You could be hitting speed limits of your NAS or local SSD. With the cache filling up and dropping the transfer speed. Which I'm assuming is the cache on the Macbook SSD getting filled and dropping to it's sustained write speed.

Like my Samsung 980 is something like 3,000 MBPS sequential write. But as soon as the cache is filled. It drops to something like 400 MBPS sequential write. While my 2x870Evo in RAID 0 are 1,000 MBPS sequential write. They drop to about 600 MBPS once the cache is filled.

Maybe have the Activity Monitor set on network. Move something like 100GB file or a handful of 4K movies if you have no single thing that big. Then watch the Activity Monitor. To see if it starts out really high for a few seconds then drops speed.

 

[carfac]

I am just running speed test programs.... for Internet just the regular onlibe "Test your online spped" websites.

For the NAS, I used Open Spped Test, which runs on the NAS to test transfer speeds

 

[Chancha]

On the Synology run a Docker image of iperf3, and speed test on the Mac with Terminal; that way you can eliminate potential causes that affect the result such as browser/GUI or the SMB protocol or disk speed.

That said I don't think your 972 mbps is particularly low, but yes it is odd the upload seems a bit faster. Is your MBP SSD almost full? (but then the speed test may just be throwing around a cache file that's a couple GB large that doesn't even get written out of RAM).

As for ISP, I don't think it is worth going from 1 to 2.5 unless you find your current pipeline really saturated. Say a few household members are streaming videos at the same time, or someone needs a "gaming" connection etc.