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In-Home-Streaming issues with NetworkManager #340

Open jowy opened 9 years ago

jowy commented 9 years ago

Running the default NetworkManager seems to cause periodic (~two minute intervals) lag spikes that seem to last up to ten seconds.

I've uploaded a screen capture of the graph and the stream trace snapshot.

I've tested this using various WiFi configurations and even 1Gbps ethernet on an isolated switch. All methods seem to have this issue. Watching htop on the client and Task Manager on the server, no obvious culprit is seen.

After some research, I've found a handful of cases where people are having issues with NetworkManager's periodic scan for stronger WiFi networks... I believe this to be the culprit since disabling the network-manager service and using WICD or manually configuring the WiFi / Ethernet seems to solve it. There are even patches to remove this functionality from NetworkManager.

Side note: I was previously having issues with audio not working after starting the stream. Now this seems to be solved. (This was also tested on all configurations.) I'm thinking that there may be some problem when NetworkManager ticks for a scan during a stream's initialization.

Client System Info (I will post more as necessary, but I do not think any hardware is at fault here):

AP: Netgear R7000 running DD-WRT tweaked for AC performance.

Intel Network 7260HMW (802.11AC 2x2 mini-PCIe)
EVGA NVIDIA GTX 750 1GB (4.5.0 NVIDIA 346.72)
Intel Core i5-4670K

866Mbit Link @ ~70% signal quality.

Steam Client Build: Jul 15 2015, at 16:29:59
Steam Versions: 1437005836
Steam API: v017
SteamOS Version: SteamOS 2.0 Update 1:2.26
mdeguzis commented 9 years ago

Do you experience this with Debian Wheezy or Jessie (Depending on you being on SteamOS 1.0/2.0)?

jowy commented 9 years ago

Jessie On Jul 29, 2015 12:35 PM, "mikeyd" notifications@github.com wrote:

Do you experience this with Debian Wheezy or Jessie (Depending on you being on SteamOS 1.0/2.0)?

— Reply to this email directly or view it on GitHub https://github.com/ValveSoftware/SteamOS/issues/340#issuecomment-126030214 .