Traffic Stutters

[somiller 694]

Nico,

Tonight I was trying to diagnose a problem I've been having with traffic stuttering. I run PSXsceecontraffic on a client, connected via WiFi at 433Mb/sec. I've finally determined the problem occurs ONLY if I run Little Navmap, which runs on the same client and connects to P3D with their utility called Little Navconnect. As long as I don't run Little Navmap I don't have stuttering (even if Little Navconnect is running on the server), however, as soon as I start LittleNavMap, the stutters are back.

As a troubleshooting step, I connected the client to Gb ethernet, and the stutter problems are gone, even if I'm running LittleNavMap.

Is there a way to run PSXseecontraffic AND LittleNavMap on a WiFi connected client without the stuttering.

(edit) It should be noted that the stuttering only affects AI traffic...I'm at a solid, locked 30 fps and the sim is smooth a silk.

Any suggestions would be appreciated.

Kind Regards,

Edited May 22, 2018 by somiller
additional clarification

[ZKOKQ 984]

Hi Steven,

Are you using 2.4ghz or 5ghz  ( 802 11ac ) ?  The reason I ask, and sorry if you already know all this, but if you are using 2.4, which is good for long distance wifi transmission, it is a slower speed.

If using 5ghz, is your client pc close to your router ?  5ghz works optimuim when situated close to router which I am using. I am not able to use direct GB ethernet due to the layout of my apartment. But I use Netgear wifi range extender to improve coverage even more.

I just did a test running LNM on my client, get a little bit of stuttering, which you get sometimes when position updates occur, but not deal breaking.

 

Cheers

Julian

[kiek 1,212]

 

Quote

Any suggestions would be appreciated.

Did you try to start PSXseeconTraffic at high priority, higher than Little NavMap? See this thread.

If you already tried, well than always use a wired LAN connection, I'd say... 

 

Edited May 22, 2018 by kiek

[somiller 694]

Nico,

Yes, in my search for solutions on this forum, I had seen the thread about starting high priority, so I used the .bat file example you had written to start PSXseecontraffic, and have confirmed the .bat is executing correctly.

Kind Regards,

10 hours ago, ZKOKQ said:

Hi Steven,

Are you using 2.4ghz or 5ghz  ( 802 11ac ) ?  The reason I ask, and sorry if you already know all this, but if you are using 2.4, which is good for long distance wifi transmission, it is a slower speed.

If using 5ghz, is your client pc close to your router ?  5ghz works optimuim when situated close to router which I am using. I am not able to use direct GB ethernet due to the layout of my apartment. But I use Netgear wifi range extender to improve coverage even more.

I just did a test running LNM on my client, get a little bit of stuttering, which you get sometimes when position updates occur, but not deal breaking.

 

Cheers

Julian

Julian,

I am indeed using 5Ghz (ac) and my client laptop sits on the desktop directly above the router which is under the desk. I'm getting a very strong connection to the router, and maintaining 433Mb/s. My stutters are repetitive every 4-5 secs, lasting for approx. 7-9 sec., then 4-5 sec. no stutter, then 7-9 sec. of stuttering.

I am going to do a some ping testing to see what kind of latency I'm getting...maybe it's a latency issue when I'm on WiFi.

Kind Regards,

[somiller 694]

Okay, did the ping tests, and exactly as I suspected, it's a problem with high latency.

Ethernet connected ping from server to client with LittleNavMap running <1ms

Ethernet connected ping from client to server with LittleNavMap running <1ms

Wifi connected ping from server to client with LNM running <1ms - 358ms

Wifi connected ping from client to server with LNM running <1ms - 226ms

I watched for stutters and then looked at the latency and whenever the stutters started, the latency was up, and when the stutters stopped, the latency had dropped back down to <4ms.

Not sure what I could do to mitigate the latency when running WiFi, other than maybe use Process Lasso to adjust resource priorities to PSXseecontraffic, and limit resources to LittleNavMap.

It's a shame, because it's not terribly convenient for me to connect my client via Ethernet, but oh well, it's better than traffic stuttering...I guess.

Kind Regards,

[ZKOKQ 984]

6 hours ago, somiller said:

's a shame, because it's not terribly convenient for me to connect my client via Ethernet,

Agree, I am in the same boat. As we have a similar set up, I will do a ping test as well. Be interesting to compare. I am using a Fritz Box 7490 Router

 

Edit: @somiller FWIW, my average ping time was 5ms client to server with LMap running. Without 4ms. I does peak on accasion to 110 ms

With my set up though, I am using my Netgear Range extender as an ethernet connection using Cat 6 patch cable  for my server, as it does not have a wifi adapter.

Edited May 23, 2018 by ZKOKQ

[somiller 694]

ZKOKQ,

I suppose I should have specified that my server is a desktop computer on Ethernet CAT5e...it's only the client laptop that was on WiFi.

I don't know the magic threshold for latency before encountering stutters but I would guess 110ms exceeds it by a fairly high margin.