For all configured loggers and the LogStdout logger, enables microseconds in the time stamp. LogMicroseconds requires Time::HiRes Perl module. If this module is not installed, the microseconds part in the time stamp will be all zeroes 000000. Time::HiRes is typically part of the Perl default installation or packaged separately on some systems such as Red Hat derived systems where the RPM is called perl-Time-HiRes