Current code sets max log file size and number ina fixed way: in ezdebug.php
const MAX_LOGFILE_SIZE = 204800; // 200*1024
const MAX_LOGROTATE_FILES = 3;
the ezbdeug methods setMaxLogSize and maxLogrotateFiles are never called anywhere. Same applies to eZLog
I'd say these can either be gotten from ini settings, or from config.php...