excessive cpu usage in linux nightly

[test2a]

trafficstars

Describe the bug you encountered: cpu is up to 20.5% which is while rustdesk isn't even connected to a remote machine..

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What did you expect to happen instead?

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How did you install RustDesk? github nightly

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RustDesk version and environment

[rustdesk]

@Kingtous

[Kingtous]

did u just start rustdesk and do nothing？

Could you please provide the steps how to reproduce this issue?

[test2a]

@Kingtous

here is system monitor right now being connected to a windows machine. 58.8% even, i could not take a photo of that. i am trying to recreate yesterday's after disconnection high CPU usage but this too looks very high. ok. i am up to 61% now

[test2a]

@Kingtous ok. so i in the above screenshot i was connected to a machine so i disconnected and let it sit while i was writing this and suddenly the CPU is up to now 25%.... from rustdesk.

can i send you some logs or something?

[rustdesk]

@test2a Thanks for your report, we get some clue and will fix it soon.

[rustdesk]

@test2a could you try new nightly again?

[test2a]

@rustdesk ok. i do apt remove and install the nightly version and the cpu usage is now in cycles.

up and down,

i have left the remote connection "connected" and using other local windows and the graph shows just plain 35% all the time.

here is after i started directly using remote window for 1-2 minutes.

so from this i can gather, keeping the rustdesk as top active window keeps the cpu usage to minimum but if it goes behind other active windows, the usage just keeps on growing

[rustdesk]

can you help compare cpu usage with 1.1.9 based on above two scenarios?

[test2a]

@rustdesk ok. i installed 1.1.19 from github after removing nightly and the usage is 0.3%.

when using it, the cpu usage doesnt go much and the RAM is also very low. check the screenshots

[test2a]

@rustdesk 1.1.9 does not even show up in the graph on the right side for the most time

[rustdesk]

@Kingtous the memory usage is acceptable, but seems much more than dart vm usage, the cpu usage is still high.

[Kingtous]

@rustdesk ok. i do apt remove and install the nightly version and the cpu usage is now in cycles.

up and down,

i have left the remote connection "connected" and using other local windows and the graph shows just plain 35% all the time.

here is after i started directly using remote window for 1-2 minutes.

so from this i can gather, keeping the rustdesk as top active window keeps the cpu usage to minimum but if it goes behind other active windows, the usage just keeps on growing

I cannot reproduce the excessive cpu usage on my manjaro using latest nightly build. I connected to a remote computer, and KDE monitor shows below:

If I use other windows and unfocus the window, the cpu usage is becoming lower.

btw, I highly doubt there's some render issues on flutter engine. Could u please provide some cpu usage clues?

Steps:

• perf record -F 99 -p RUSTDESK_PID -g -- sleep 60, RUSTDESK_PID can be found by ps -aux | grep rustdesk
• wait for one minute, perf will sample cpu usage of rustdesk. Then u can upload perf.data generated by the command above.

And what are the graphic cards u use and your graphic drivers (nouveau or something)?

[test2a]

@Kingtous i installed the latest nightly today after removing 1.1.9 and the performance looks much better, same as your screenshots so it must've been something in the interim that fixed. i am going to install 2-3-5 days old nightly versions and send you perf data..

no dedicated graphics.

Operating System: KDE neon 5.26 KDE Plasma Version: 5.26.2 KDE Frameworks Version: 5.99.0 Qt Version: 5.15.7 Kernel Version: 5.15.0-52-generic (64-bit) Graphics Platform: X11 Processors: 4 × Intel® Core™ i7-4600U CPU @ 2.10GHz Memory: 7.7 GiB of RAM Graphics Processor: Mesa Intel® HD Graphics 4400 Manufacturer: Dell Inc. Product Name: Latitude E7440 System Version: 01

[Kingtous]

@Kingtous i installed the latest nightly today after removing 1.1.9 and the performance looks much better, same as your screenshots so it must've been something in the interim that fixed. i am going to install 2-3-5 days old nightly versions and send you perf data..

no dedicated graphics.

Operating System: KDE neon 5.26 KDE Plasma Version: 5.26.2 KDE Frameworks Version: 5.99.0 Qt Version: 5.15.7 Kernel Version: 5.15.0-52-generic (64-bit) Graphics Platform: X11 Processors: 4 × Intel® Core™ i7-4600U CPU @ 2.10GHz Memory: 7.7 GiB of RAM Graphics Processor: Mesa Intel® HD Graphics 4400 Manufacturer: Dell Inc. Product Name: Latitude E7440 System Version: 01

perfect, thanks for reporting.

[xzipyx]

can you help compare cpu usage with 1.1.9 based on above two scenarios?

I experienced the same on arch + gnome + x11. High load when I connect to the nightly or git compiled version. The stable version is not affected.

[rustdesk]

git compiled

then please help dig in.

[wakewon]

I found a similar issue on macOS. RustDesk server daemon /Applications/RustDesk.app/Contents/MacOS/rustdesk --server always take nearly 90% usage of CPU (maybe a core?) even without any connection. Once this service has been stopped, the high-usage item in system activity monitor will be disappear for seconds.

Meanwhile, it seems that com.carriez.RustDesk_server.plist cannot be unload, and this servies always restart no matter how I stop it (making it really hard to upgrade).

macOS 13.2.1, Intel RustDesk nightly 1.2.0, Build date: 2023-02-22 00:16

[rustdesk]

@wakewon noted.

[xzipyx]

git compiled

then please help dig in.

how can i help, i just installed it from arch user repository

[rustdesk]

@21pages looks like it happens lately, please confirm and check when started.

[21pages]

Ok, let me try flamegraph first

[rustdesk]

how can i help

Sadly, I can not reproduce on Linux and Mac. You can try out chatgpt.

[wakewon]

how can i help

Sadly, I can not reproduce on Linux and Mac. You can try out chatgpt.

Well... I have no idea how to provide a way to reproduce this issue since it just happens.

Without server agent:

Once server agen has been launchedt:

[rustdesk]

Let me know if you can get anything.

[wakewon]

Let me know if you can get anything.

Sadly, my "Inspect" window doesn't have a "CPU" tab or a "Threads" tab.

Here is my sampling result, Sampling of "RustDesk".txt I don't know whether it is helpful.

[rustdesk]

Thanks a lot, though I can not get helpful message from the file so far.

[rustdesk]

But good news, I reproduced the problem.

[wakewon]

But good news, I reproduced the problem.

Here are more detail for this issue (maybe still not helpful at all): If remove RustDesk's server's global agent and start RustDesk manually, this issue can be override, and this device can still be accessed. Meanwhile, directly running RustDesk's server in Terminal with /Applications/RustDesk.app/Contents/MacOS/rustdesk --server can also reproduce this problem (the agent service is previously disabled).

Another thing is that I found I cannot see my cursor (iOS -> macOS) when connecting to the latest nightly build for macOS. Maybe I will open a new issue for this problem later.

[rustdesk]

https://github.com/tauri-apps/tray-icon/issues/30

[xzipyx]

But good news, I reproduced the problem.

Here are more detail for this issue (maybe still not helpful at all): If remove RustDesk's server's global agent and start RustDesk manually, this issue can be override, and this device can still be accessed. Meanwhile, directly running RustDesk's server in Terminal with /Applications/RustDesk.app/Contents/MacOS/rustdesk --server can also reproduce this problem (the agent service is previously disabled).

Another thing is that I found I cannot see my cursor (iOS -> macOS) when connecting to the latest nightly build for macOS. Maybe I will open a new issue for this problem later.

do you have a mouse and keyboard attached? if not, it will show a pointer instead of cursor