How to disable rsyslog Rate-Limiting in ubuntu

Issue The following messages have been reported in /var/log/syslog: Jul 3 08:50:16 localhost rsyslogd-2177: imuxsock lost 838 messages from pid 4713 due to rate-limiting Jul 3 08:50:17 localhost rsyslogd-2177: imuxsock begins to drop messages from pid 4713 due to rate-limiting How to disable rsyslog rate-limiting in order to prevent these messages?