Hello! Just for the record, the perl -w option is to print out warnings and should not be used in production:
https://manpages.debian.org/buster/perl-base/perl.1.en.html#DIAGNOSTICS The "use warnings" pragma produces some lovely diagnostics. One can also use the -w flag, but its use is normally discouraged, because it gets applied to all executed Perl code, including that not under your control. In 10.5.5 mytop is not using -w anymore. Only mariadb-report and some test suite scripts and ColumnStore use -w (although ColumnStore is alpha, so printing warnings there is I guess intentional). The error "Unknown option: default-character-set" is also fixed in MariaDB 10.5.5 as the /etc/mysql/mariadb.conf.d/50-client.cnf no longer defines anything about charsets or utf8mb4 (it relies on the server to enforce utf8mb4 anyway).
