CPU max usage

[InfiniteCod3]

Hello, I have set up hopper to proxy a basic spigot server. even when no one uses the proxy, hopper tends to spike the cpu at 100% for like 10 minutes.

[BRA1L0R]

Hi. Thank you for showing interest in the project. This is a potential issue I am aware of and I'd like to investigate further with you.

• Can you please enable debug logging by running hopper with RUST_LOG="debug" ./hopper? Please share here any unexpected output

• Also, can you share your config file here?

Thank you very much

[InfiniteCod3]

here is my config
Config.zip
and i will turn on the debugging and see if there is anything unexpected going on

[InfiniteCod3]

It's just weird 1 person joined cpu spiked to 50% second person joined cpu spiked to 100% and there are no errors or any unexpected output.

[BRA1L0R]

@InfiniteCod3 this is interesting. May I know what version of linux are you running? Also what distro? How are you running the program? Thanks

[InfiniteCod3]

Ubuntu 20.04.4 LTS, I'm running the program as root in the root directory with ./hopper or RUST_LOG="debug" ./hopper for the debug

[BRA1L0R]

Also, your config file is wrong. It shouldn't be the cause of the problem but you might want to try with a correct configuration file:

listen = "0.0.0.0:25565"

[routing.routes]
"katana.lol" = { ip-forwarding = "bungeecord", ip = "178.63.42.237:20006" }

[InfiniteCod3]

oh yeah thanks, i doubt its gonna fix the issue tho

[BRA1L0R]

i doubt its gonna fix the issue tho

yea i know, can you try running it without bungeecord ip forwarding? thanks

[InfiniteCod3]

i doubt its gonna fix the issue tho

yea i know, can you try running it without bungeecord ip forwarding? thanks

stills does the same, the cpu still spikes up

[BRA1L0R]

stills does the same, the cpu still spikes up

The issue may be the low core count which creates some sort of spinlock condition between tasks. I will try doing some local testing with a limited number of cores

[BRA1L0R]

I was indeed able to recreate the issue with a low core count. Yikes.

[BRA1L0R]

I have just checked. Any core count ties hopper in an infinite loop. This appears to be a problem with the latest version.

[BRA1L0R]

Hi. I think i have identified and solved this issue. Can you check on your end once the CI produces the binary? Thank you very much for your patience

[InfiniteCod3]

Hi, the problem has been solved hopper no longer eats the whole cpu. Thanks for the quick fix 👍