AWS Elemental MediaConnect collects data that is the basis for metrics. It collects these datapoints every second and sends them immediately to Amazon CloudWatch. You can use CloudWatch to generate metrics for these datapoints.
A metric is a collection of datapoints that has had an aggregation (a statistic) applied and that has a period and a time range. For example, you can request the Dropped packets metric as an average (the statistic) for a 1 minute period over 10 minutes (the time range). This result of this request is 10 metrics (because the range divided by the period is 10).
Period
Most MediaConnect metrics have a high resolution period, which means that the minimum period is one second. MediaConnect Gateway metrics are the only metrics not available in a high resolution period.
Time range
Each period has a maximum time range. For example, if you specify 1 day as the time range, you won't be able to retrieve metrics with a 10 second period.
| Period | Maximum time range |
|---|---|
| 1 second | The last 3 hours |
| 5 seconds | |
| 10 seconds | |
| 30 seconds | |
| 60 seconds | The last 360 hours (15 days) |
| 300 seconds (5 minutes) | The last 1512 hours (63 days) |
| 900 seconds (15 minutes) | |
| 3600 seconds (1 hour) or longer | The last 455 days (15 months) |
Periods don't have a minimum time range. But there is a point where the statistic you apply becomes meaningless if you have a low period. For example, assume that you set the period to one second. This means that CloudWatch retrieves one datapoint. You can't obtain an average, a minimum or a maximum on one datapoint. However, this doesn't mean that the metric is meaningless. Instead, the metric is for the raw datapoint, with no statistic.
Maximum storage time
Metrics are available for the last 15 months. Make sure that you specify a period that allows the time range that you want.
