Hello,
I would recommend to set default time interval for rate retrievals to 300s (= 5min normal poll interval):
On DA host, edit /opt/IMDataAggregator/apache-karaf-2.4.3/etc/com.ca.im.odata.beans.ODataLimiters.cfg
and change in the following line 3600 to 300:
defaultRateTimeIntervalSecs=300
Any odata query without explicit starttime/endtime will return the last poll values available. We thought it is acceptable to specify the timerange if needed otherwise.
We were experimenting with other options, like sort Timestamp desc and $top=(number expected items), but the results were mixed, sometimes you dont get values for all expected items.
Hth, Lutz.