BT 900

Having upgrade to BT 900, like others I'm not getting the full 900Mb. BT of course just say it is above the minimum speed.To be fair they did fiddle about behind the scenes and fixed the upload being stuck at 50Mb

As recommended I have set up a direct PPoE between my PC and the ONT, using a cat 6 cable, as a test to eliminate the smart hub 2.

The problem I am having is that the speed-test is slower this way than when connected through the hub.

Direct to ONT - 120 Mbs
SH2 - 600+Mbs

Upload is the same for both at 110Mbs

Tried with different cable and PC , results the same

This is how I set up the PPoE


Step 1 Press “Windows key +X”, and click on “control panel”;
Step 2 Then go to Network and Internet->View network status and tasks page.
Step 3 Click on Set up a new connection or network

Step 4 Select Connect to the Internet and click Next button.
Step 5 Click on Broadband (PPPoE).
Step 6 Insert username and password.

Any ideas why it is slower without the hub inline? I assume I have just done something wrong in setup but can't see it

Is your PC showing a gigabit network connection when connected to the ONT? Is the CPU maxed out during a speedtest?

What are you using to speed test? Many test servers cannot cope with the full 900 Mbps. If you're seeing download speeds of 500-900 Mbps with upload of 100+ Mbps on the SH2 then nothing to be concerned about.

In reply to a post by 4Way:

Any ideas why it is slower without the hub inline? I assume I have just done something wrong in setup but can't see it

What spec is your PC, and what security products do you have installed?

It could be Windows network drivers, anti-virus software, browser limitations, many things.

I use a Macbook Pro as my main machine. If I run a browser-based test speedtest to speedtest.net then I can see in Activity Monitor that the CPU is maxed out at 100% while downloading; the measured speed bounces around and doesn't achieve more than about 270M.

However if I run the standalone speedtest.net app, then I get a flat ~305M which is what my (300/50) line is capable of, and the CPU isn't maxed out.

In reply to a post by candlerb:

However if I run the standalone speedtest.net app, then I get a flat ~305M which is what my (300/50) line is capable of, and the CPU isn't maxed out.

Does that depend on the browser? Sounds to me as if your DMA is not working from Ethernet card to RAM.

Are you using WiFi or an ethernet dongle on the Mac? Which type of dongle, USB or Thunderbolt? Is your disk encrypted, which if the browser is writing to disk could add to CPU load.

I have a 4th gen i7 desktop running Win10, and gigabit connection to my router, and then gigabit to the Virgin Hub. The gigabit is an Realtek chip on my Asus motherboard. My disk is not encrypted, as its a large, heavy, tower chassis.

200 Mbps download, 20 Mbps upload. Almost no impact on CPU using a browser based speed test, peaked at 30% CPU for about 2seconds, but mostly 5% during the test on speedtest.net or thinkbroadband.com

I am using Firefox (version 81.0 currently).

Edited by jchamier (Thu 24-Sep-20 21:15:53)

DMA doesn't work using a browser but works using the app?

The CPU utilisation is the browser. I see the same thing.

True DMA can’t be the reason.
Are you also using a Mac ?

Hi,
Yes it shows gigabit connection and no it isn't maxed out

A variety including Fast.com which BT tell you to use