4.3.4 Using huge amounts of CPU

[Motophan]

Please provide the following information

qBittorrent version and Operating System

linuxserver/qbittorrent:14.3.4.99202104031018-7348-2b6baa609ubuntu20.04.1-ls125 docker container

Host is debian stable, fully updated

If on linux, libtorrent-rasterbar and Qt version

Qt 5.12.8
Libtorrent 1.2.13.0
Boost: 1.71.0
OpenSSL 1.1.1f
zlib: 1.2.11

What is the problem

It uses 2 cores @ about 40% cpu. I have a 8c16t processor and when the daemon is fairly empty I have high cpu usage. 1200 torrents, 1 active, sub 1MBps upload of traffic. Host has 1G uplink

What is the expected behavior

1-5% cpu

Steps to reproduce

install the container
load up 1200 dormant torrents (with maybe 1-2 active) low traffic sub 1MBps
See your cpu go up

Extra info(if any)

4.3.2 had the same issue, I updated to 4.3.4 to fix the issue
AIO threads 1,4,10(default) doesnt change usage

[Motophan]

The only way I can get semi-sane cpu usage is to set (in docker) cpu's to 0.5, then I need to limit download and upload to 10MBps. Otherwise this program will end up taking more cpu resources than the rest of all my programs combined (including plex that willl transcode video at times) and will be top of my cpu time charts by a significant margin.

[FranciscoPombal]

Converted to discussion because usage with docker is not officially supported. Here, other users may help you getting your setup working correctly. If you do uncover an actual bug in the troubleshooting process, please submit a new issue report (one may be created for you also).