Bug #6242
High CPU load
0%
Description
Hi!
After updating from 4.3-2027 from the old repository at apt.tvheadend.org to 4.3-2069 from the new repository I had a constant CPU load of 100%.
Downgrading to 4.3-2068 brought the CPU load back to ~20% as it was before.
OS: Debian 11
Signal source: SAT>IP server Kathrein Exip418
System: Thomas-Krenn LES network 6L with 16GB RAM and i5-8250U CPU
History
Updated by Flole Systems almost 2 years ago
Updated by - Status changed from New to Invalid
Impossible, the difference between 2068 and 2069 is simply, that a deb for kinetic is now also built. Maybe the system is doing a backup etc., no debug logs provided so no clue.
Updated by Andreas Tauscher almost 2 years ago
Updated by Flole Systems wrote:
Impossible, the difference between 2068 and 2069 is simply, that a deb for kinetic is now also built. Maybe the system is doing a backup etc., no debug logs provided so no clue.
After some while I got an alert from my monitoring system that the powerconsumption of this machine is unusual high.
tvheadend was at this time for about 2 hours at 100%
For now it is not reproducable :/. Everything normal. Idle <1%, EPG scan ~3-5%, recording 4 channels + up to 20%
If it happens again: Simply enabling everything looking like debug is unlikely effective.
The debuging wiki page told me: --debug allows you to specify which subsystem to debug (TODO: add more info)
Where to start in such cases?
Updated by Flole Systems almost 2 years ago
The wiki is incomplete, the docs are much more complete: https://github.com/tvheadend/tvheadend/blob/master/docs/class/debugging.md
The best chances to figure out what's wrong is find out which thread is causing the high load and then use gdb to check what it's doing.