network signal strength poor on receive 1.9.9.170

Bill W2PKY

On receive the network signal strength meter registers 1 red bar to 2 white bars. Latency is < 1ms. This is a direct connection from the radio to my I7 tower computer.
On transmit all bars are green. Never saw this before. Radio is working fine.
Rebooted SSDR, did not help. Powered off the radio and power supply and restarted the radio, did not help either.
Anyone else seeing this?

Mike va3mw

So, other than the bars, it is working fine? It is likely a bug in the bar graph. Va3mw

Ria

Do you have any power management features turned on on the network card? That's pretty much what I would be looking for.

Roy Stiegler

I have a 6500 connected thru Netgear switch to the computer (ala instructions from Flex) and also to the internet.

I see all green sometimes, sometimes it falls back momentarily to no connect, or runs
a red bar.  Network status varies from excellent, to poor to no connection as noted.  What network are they talking about?

Maybe something to do with internet connectivity, so I disconnected the internet line.  Same.

Data flow through the switch seems steady, latency is less than 1ms all the time, and it shows no
packets dropped.  

The 6500 never falters, so I just ignore the graph.

Roy W5TCX

K5CG

Are you using any other apps like the CMD Micro DJ controller, or other things? It sometimes duplicates the UDP packets and makes the Network Health to go red and indicate dropped packets (but doesn't actually affect operation).

Are you seeing dropped packets in the Network Health details?

Bill W2PKY

Found the problem: The receive buffers were set too low. Must be a default in Win 10 Pro install. Bumped the buffers up to 2048 and the Network signal strength is back up to 5 green bars.

Rick Hadley - W0FG

I'm a network dummy. Where do you change the receive buffers setting??

K5CG

Windows 10 Home Edition:

Control Panel->Network and Sharing Center->Change Adapter Settings
Right click on your LAN adapter->Properties
Click "Configure" (the button on the right)
Click "Advanced" (a tab).

In the list are many settings.
Receive Buffers
Transmit Buffers
and lots of others in alphabetical order and the list varies by NIC type/manufacturer.

It's probably a good idea to write down the old values before changing anything.

Danny

P.S. The default in Windows 10 Home Edition is 512 and I have no problems.

Bill W2PKY

Mine was 256 which seems to be a problem.

Cal N3CAL

Mine has been running solid set to 2048

Cal/N3CAL

Mike va3mw

Is there an increase in Latency if the RX buffers are increased? Bigger buffers are not always the answer when dealing with streaming UDP traffic as there is a risk of buffer bloat. I am not sure if that is the case here or not, but I thought I would mention it. Mike va3mw

KY6LA_Howard

Interesting Observations Some of the faster routers have issues with Maestro Increasing buffer size seems to cure the issue Speculating that the higher speeds may be causing buffer overruns which larger buffers fix

Mike va3mw

I'm not sure if I can explain this well, but if you get a buffer overrun, the receiving station is to message back the sender and say 'slow down'. If we have bigger buffers that doesn't happen, however in live streaming, the result is you may get more packets out of order (or something like that). Bigger buffers do break speed throttling. The Jitter gets worse and we start to get black lines on the waterfall. More on Wikipedia https://en.wikipedia.org/wiki/Bufferbloat Mike va3mw

Bill W2PKY

Perhaps FRS lab can provide some guidance on the best buffer size? The wiki talks about 32 megs as an over ****. But 2K is probably not an issue.

Tim - W4TME

There are too many variables in play to make a definitive statement for using a specific number of buffers.  I suspect that the best thing to do is if you are having a problem, increase them until you start having the same or a new problem and then back them off a bit.