agetty cpu ussage

[natxo]

Hello

What its "agetty" and why its eating my cpu?

[RaTTuS]

it's an alternative getty
which is a get tty bascially how you log in ,
as that one is running as root a couple of questions
have you opened your pi up to access from the internet and do you have the default username / password still in place?
what are you running on your pi ?

[natxo]

Thanks

No im running my pi on a private network, and i changed my password.

My pi its running a custom app called "gestorTurnos", i was checking how much memory my app use and saw that. i have a PSU board connected and another i2c device. And im running my app from desktop if that matters

Its anything i can check?

[PeterO]

What does running the command below produce :

ps lax | grep getty

PeterO

[RaTTuS]

your running gestorTurnos as root and that is what is taking up all the cpu ...
see what PeterO said

[natxo]

What does running the command below produce :

ps lax | grep getty

PeterO

Attached an screenshot

your running gestorTurnos as root and that is what is taking up all the cpu ...
see what PeterO said

Yes, thats because im sending a hearbeat from y app to the rpi watchdog and if not root i can not write to /dev/watchdog

Im doing that wrong?

[RaTTuS]

1) post your code
2) install pastebinit
i.e.
sudo apt-get update && sudo apt-get install pastebinit
then sue that to post text - don't do screenshots - they are hard to read....
like
ps axOT | pastebinit

[PeterO]

Try turning off the login on ttyAMA0 with raspi-config.

PeterO

[KLL]

sudo apt-get update && sudp apt-get install pastebinit

[RaTTuS]

sudo apt-get update && sudp apt-get install pastebinit

and fixed ;-p

[natxo]

1) post your code
2) install pastebinit
i.e.
sudo apt-get update && sudo apt-get install pastebinit
then sue that to post text - don't do screenshots - they are hard to read....
like
ps axOT | pastebinit

What code are do you refer, the class i made for watchdog its
https://gist.github.com/natxopedreira/6 ... 43c6cd4b99

And the pastebinit result of ps lax | grep getty
http://paste.debian.net/995444

[natxo]

Try turning off the login on ttyAMA0 with raspi-config.

PeterO

I run raspi-config and said no to:
+ would you like a login shell to be accesible over serial?
+ would you like the serial hardware port to be enabled?

reboot, try again and still agetty its eating my cpu.

[natxo]

Also if i stop my app and run top i still see "agetty" eating my cpu

[natxo]

Hello

Previously i disable the console on ttyAMA0 with raps-config... and get the same result.

But.... i was able to get rid of this agetty high cpu with this

Code: Select all

sudo systemctl stop serial-getty@ttyAMA0.service
sudo systemctl disable serial-getty@ttyAMA0.service

Thanks to all for your help, community its great !!!

[RaTTuS]

umm interesting ,
do you have anything plugged into the GPIO ports of the RPI ?

[natxo]

Yep i have two i2c boards connected, not using serial at all