DWC becomes sluggish after a few days
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@jens55 @curieos I have noticed something similar in Chromium on Raspberry pi, but not in chrome on Windows so assumed it was just the pi running out of RAM. I regularly have DWC open in multiple instances for multiple Duets on my PC for days/weeks on end.
Potentially @chrishamm can provide a pointer on how to provide him with some state dump or information to workout whats happening.
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@T3P3Tony I'd be happy to provide whatever diagnostic data he could desire. It will have to wait until Monday, though that's a benefit in this case, as the web interface will be quite sluggish then.
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i have noticed that the wifi connection seems to need a manual refresh now and again as DWC seems to have frozen. reported this a few weeks ago , although not seen this in the latest Duet Web Control 3.5.0-rc.1 release yet
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@moth4017 That's great if it's fixed in 3.5, but this machine can't be on prerelease firmware.
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undefined Phaedrux marked this topic as a question
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@curieos Can confirm it's not fixed in 3.5 running chrome on windows 10
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@p8blr im running Chrome Version 117.0.5938.132 (Official Build) (64-bit)
still not had any issues -
It happened today for the first time using v3.5 , DWC wasn't updating values had to reload page in chrome.
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I was seeing something similar not sure if it's related or will even help. By chance I loaded RealVNC to update system and saw the browser instance running on the pi had been caching everything since I hooked up the system and was running slow to the point where everything was just lagging, I never shut the pi down. I closed out the browser in RealVNC and haven't had an issue on the computer browser since. I assume the browser is started automatically when the pi is started and won't be much of an issue if the pi is rebooted every so often.
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@chrishamm please confirm what information you need to help diagnose this issue.
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@curieos @jens55 @p8blr I have a suspicion why this is ocurring, and I may have a fix in v3.6 that I could backport to 3.4/3.5. Can you confirm that you are running your boards in standalone mode? Checking the memory usage before and after the issue occurs might be worthwhile, too.
Duet software engineer
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@chrishamm, thanks for looking into this!
I can confirm that I am running standalone. I will try and get memory used figures when I next see the issue.
I am assuming you are talking memory of the Duet? Just to make sure we are talking about the same thing here - I do not do anything on the Duet side to 'fix' things ... I just close the browser window and start a new instance.Here are M122 results before closing the browser window and after re-opening the browser window on a Duet 6HC and a Duet wifi 2. Both boards seemed a bit sluggish in response but neither was REALLY bad ....duet slow-down tests.txt
I hope this is what you wanted ..... -
@chrishamm In my instance, this machine is running in SBC mode. It's mainly a problem for us since we have a touchscreen hooked up to the pi displaying the web interface, and it's difficult to refresh that browser window without hooking up a keyboard. I notice on my windows computer running Firefox that the interface also becomes sluggish there if I don't refresh the page after a couple days.
In the instance of my computer, only that tab becomes slow to respond. I put my computer to sleep at the end of the day and wake it up when I get in. The instance of DWC has to reconnect when I switch back to that tab.
edit: I can run the Firefox process profiler on that tab if that would be helpful. Right now it's a little slow, I can profile it now and later when it becomes worse. Let me know how I should give it to you.
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@chrishamm Right now, with Firefox 118 on Windows 10, DWC on DSF is using 1gb of RAM and 100% CPU usage according to Firefox's process manager. I'm not sure what 100% CPU means, maybe 100% of a thread? I profiled it, let me know if you want it/how to get it to you.
She/Her
I work at a local 3D printing shop.
Printers: Micron+ w/Duet 3 Mini, in-progress adaptation of the Jubilee REL onto an E3D MS, Prusa i3 MK3S. -
@curieos will do when I'm back from Formnext. If you could provide that dump it may be useful.
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@curieos Please send me an email with a link to your dump (e.g. Google Drive or Dropbox) to christian@duet3d.com and I'll have a look at it.
