

It could depend on your distro, official packaging (docker,Debian,Fedora) have MALLOC_TRIM_THRESHOLD_=131072
, but different distros could have (or not) ship with different settings.
Official settings for systemd https://github.com/jellyfin/jellyfin-packaging/blob/master/debian/conf/jellyfin
My source for UK TV https://post.rlsbb.ru/what-it-feels-like-for-a-girl-s01-720p-ip-web-dl-h264-hbd/