High network usage

mjanssen · September 23, 2019, 8:28pm

Hi,

I have very high bandwidth usage (all available bandwidth on my Windows computer), resulting in a hardly responding Octoprint webgui. This happens on multiple computers and with multiple browsers) on my Octoprint 1.3.11 running on Raspbian Buster on a RPi4 when opening the Octoprint webgui.

I'm not sure why this is happening.

As long as I don't open the WebGUI (through apps like OctoClient and OctoPod, the issue does not occur), there is no issue and OctoPrint runs fine. Also when opening the Webgui on iPad, iPhone or MacOS, there is no issue.

I have an (almost) identical Octoprint running with another printer, same hardware, same version, same plugins, and there the issue does not exist.

I saw some issues with high CPU usage, but I don't experience that.

My octoprint.log don't show anything strange, as far as my untrained eye can determine ;-). (see below)

In the logfile I started Octoprint, opened the Webgui and stopped Octoprint again.
octoprint.log (123.4 KB)

PrintedWeezl · September 23, 2019, 8:35pm

like 1 Gbit!? Wow that's really high.
Try to start octoprint in safemode maybe a plugin causes that

OutsourcedGuru · September 23, 2019, 9:16pm

Use the built-in scanner to look for computer viruses. It's possible that this high-bandwidth problem is that:

your computer is now a zombie and it's sending out SPAM email for someone
your computer is now a porn hosting website or warez website or similar
your computer is now being used to mine cryptocurrency for someone else

mjanssen · September 23, 2019, 9:27pm

Yes, the whole 1Gbit.

Will try safe mode.

mjanssen · September 23, 2019, 9:30pm

I thought about that too, but it only happens when I open the Octoprint page of this printer. With another Octoprint it doesn't and it happens on multiple computers, both here and in the office.

OutsourcedGuru · September 23, 2019, 9:32pm

As suggested then, try safe mode. Next, disconnect the webcam if you have one and compare.

mjanssen · September 23, 2019, 10:45pm

Seems like it has something to do with the webcam. When I stop the stream with the script, the bandwidth usage drops to almost zero. With stream enabled, it's about 35Mpbs, but the printer isn't printing anything, this afternoon it got almost all the way up to 100Mbps

On my other Octoprint, the webcam stream never gets higher than 15 Mbps idle. When printing, about 35Mbps

They both use the same settings for resolution and FPS. And I don't get why this suddenly became an issue yesterday.

Maybe safest to re-install and start over.

mjanssen · September 23, 2019, 11:14pm

To illustrate, when printing:

On my other Octoprint, when printing

PrintedWeezl · September 24, 2019, 6:27am

Well there is a big difference between 1Gbit/s and 100Mbit/s
That's normal depending on your webcam settings. My webcam stream with the pi webcam got about 150 Mbit/s.
I bet your other octoprint got either an other webcam, other settings or both. (Or a bad wifi signal )
Also it makes a difference what the cam is recording (dark room or bright room for example)

If you still think both streams should be the same, take a snapshot on either stream and compare the size of those pictures.

mjanssen · September 24, 2019, 8:40am

You're right, miscalculated, it was late

The settings are definitely the same, both snapshots show 1280x720.

The webcam's are different, but the thing that bothers me the most, is that it started happening suddenly.

PrintedWeezl · September 24, 2019, 8:57am

And what about the file size of both images?

foosel · September 24, 2019, 9:09am

And let's not forget about the framerate which also influences needed bandwidth.

mjanssen · September 24, 2019, 11:59am

Actually the one that doesn't have the issue is not running a print right now, but has a filesize of 232k and the other with the issue has a filesize of 141k.

mjanssen · September 24, 2019, 4:13pm

I disanbled and enabled all plugins one-by-one and the network-bandwidth is significamtly higher when I enable the OctoPrint-Dashboard plugin. With this disabled the performance is as it was before.

I will raise an issue at the Github of the plugin.

Thanks for your support!

Ed_Wilts · October 12, 2020, 2:29pm

This issue is still occurring for me and all my plugins are current. Were you able to resolve it?

mjanssen · October 12, 2020, 2:54pm

No. When I open one Octoprint instance, it works fine in Firefox, but when I open another, they both freeze.

I currently use Chrome when I need both instances open