Audio/panadapter hiccup with Network status going red/yellow to follow?

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Audio/panadapter hiccup with Network status going red/yellow to follow after about 2-3 seconds.  I read an earlier thread where the Intel WiFi chips were the problem and the solution was adding a USB WiFi dongle. (My Flex-6500 is WiFi-ed to AC router.)

Tim mentioned in the reply that a RTT Latency of over 400 was too much, I have 805 on my main PC and over 1000 on my new laptop when running remote.  My Desktop PC doesn't hiccup but the network monitor bars go from green to red/yellow every minute or so.  

On my Laptop running remote the audio and panadapter hiccup for a second or two and then the network monitor goes from green to red then yellow then green as described in previous thread.; see attached picture.

Question, with RTT latency of 805 on my main PC should I be changing WiFi adapters, as well as on my Laptop??  Both are i5 Quad core/2.5GHZ or better machines with lots of memory.
Or is there something I can configure that will fix this issue??
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k0eoo

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Posted 3 years ago

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Walt - KZ1F

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What else is running?
The processors fine as is the memory if it is 4GB or better.
Do you experience a problem when only running one pan?
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k0eoo

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memory on the PC is 8GB and on the Laptop is 4GB, but I'm bring it up to 8 soon.  CPU is only running at 12% average.  It still does it with 1 panadapter open as you can see from this screen capture.



Plus the RTT latency went to over 3000....
(Edited)
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k0eoo

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I closed SSDR and restarted to get the RTT latency number down to see what would happen over time.  Then I noticed I had a hiccup in my main PC's audio and panadapter with the network monitor going from green-red-yellow-green a few seconds later....



with all that the RTT latency stayed at15 so now I don't know whats going on.

I just started WiFi-ing my 6500 to my 802.11AC router via an EDiMAX N300 WiFi bridge, so I could use my new remote PC.  for the past 2 years I cabled my 6500 directly to my PC's Ethernet port with NO issues....  Color me confused as to what the solution might be....  Any help would be appreciated.
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Tim - W4TME, Customer Experience Manager

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You are dropping packets.  That will cause the network status indicator to degrade from green and in some cases the audio to stutter.  This is either a network performance issue where your wireless link is not capable of streaming data, your PC is experiencing long duration DPCs that is causing the packets to drop or a combination of both.

These issue have nothing to do with CPU utilization.

I believe you have already eliminated the DPC issue and identified it as a wifi network issue with your statement "for the past 2 years I cabled my 6500 directly to my PC's Ethernet port with NO issues...." so there is little need in looking at the PC at this juncture.  Also you are going through a wifi bridge and that just cut your throughput in half (or more).  There is no free lunch when it comes to wifi performance.  Wifi is a convenience feature (networking sans wires) and to achieve that it sacrifices performance.  Refer to this article for more info on this subject: https://helpdesk.flexradio.com/hc/en-us/articles/203469425-Reasons-for-Wireless-Network-Performance-...

I have stated this before.  Just because you have a wifi router that advertises it has tons of bandwidth is not an indicator that it can stream data efficiently, which is what the radio and the SmartSDR client are doing. The radio and SmartSDR do not do any type of buffering, like the so called streaming video you get from the Internet.  It is very similar to the traffic characteristics of VoIP but the radio is operating at much higher bandwidths.  To do VoIP over wireless usually takes commerical grade wifi hardware costing $1000 per access point.

For troubleshooting, I would first look at your wireless router configuration.  Look for QoS (quality of service) type features that can be enabled.  I would Google your router and see if any gamers have suggestions for options to turn on or off for higher throughput performance.  Then I'd do the same for the wireless adapter.  You may be able to squeeze out a little more throughput performance through optimizations.  Or not.  Good luck. 
(Edited)
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k0eoo

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Thanks Tim for the sage advice....   While you were typing your response I was routing an Ethernet cable into the family room where my 802.11AC router is located.  I disconnected the bridge and connected my 6500 directly to the router... Hope I have no RF getting into the radio via the Ethernet cable...

Ethernet monitor says: I'm dropping NO packets, RTT Latency is <1ms and max latency 37ms.   So the issue was completely in the WiFi bridge because my main PC is still WiFi-ed to the network....

Dennis, k0eoo
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Tim - W4TME, Customer Experience Manager

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Bingo!  Good troubleshooting techniques.