FlushDuration controls the maximum amount of time between sending metrics to the statsd collection server.
Metrics are reported when either flushbytes is full or flushduration time has elapsed since the last report.
Maximum UDP packet size to send; if not specified defaults to 512 bytes. If the statsd server is running on the
same (private) network 1432 bytes is recommended for better performance.
Chance that any particular metric is sampled when incremented; can take the range [0, 1], defaults to 1 if unspecified.
The template will be filled with values from the metric’s labels and the resulting string will be used as
the statsd metric name. This allows easier creation of statsd metrics like action_name-response_code.
The template strings must conform to go’s text/template syntax. For the example of action_name-response_code,
we use the template:
If name_template is the empty string the Istio metric name will be used for statsd metric’s name.