CloudWatch service quotas - Amazon CloudWatch

CloudWatch service quotas

CloudWatch has the following quotas for metrics, alarms, API requests, and alarm email notifications.

Resource Default quota

Alarm actions

5/alarm. This quota cannot be changed.

Alarms

10/month/customer for free. Additional alarms incur charges.

No limit on the total number of alarms per account.

Alarms based on metric math expressions can have up to 10 metrics.

Anomaly detection models

500 per Region, per account.

API requests

1,000,000/month/customer for free.

Canaries

200 per Region per account.

You can request a quota increase.

Contributor Insights API requests

The following APIs have a quota of 20 transactions per second (TPS) and per Region.

The following APIs have a quota of 5 TPS per Region. This quota cannot be changed.

The following APIs have a quota of 1 TPS per Region. This quota cannot be changed.

Contributor Insights rules

100 rules per Region per account.

You can request a quota increase.

Custom metrics

No quota.

Dashboards

Up to 500 metrics per dashboard widget. Up to 2500 metrics per dashboard, across all widgets.

These quotas include all metrics retrieved for use in metric math functions, even if those metrics are not displayed on the graph.

These quotas cannot be changed.

DescribeAlarms

9 transactions per second (TPS) per Region. The maximum number of operation requests you can make per second without being throttled.

You can request a quota increase.

DeleteAlarms request

DescribeAlarmHistory request

DisableAlarmActions request

EnableAlarmActions request

SetAlarmState request

3 TPS per Region for each of these operations. The maximum number of operation requests you can make per second without being throttled.

These quotas cannot be changed.

DescribeAlarmsForMetric request

9 TPS per Region. The maximum number of operation requests you can make per second without being throttled.

This quotas cannot be changed.

DeleteDashboards request

GetDashboard request

ListDashboards request

PutDashboard request

10 TPS per Region for each of these operations. The maximum number of operation requests you can make per second without being throttled.

These quotas cannot be changed.

PutAnomalyDetector

DescribeAnomalyDetectors

10 TPS per Region. The maximum number of operation requests you can make per second without being throttled.

DeleteAnomalyDetector

5 TPS per Region. The maximum number of operation requests you can make per second without being throttled.

Dimensions

10/metric. This quota cannot be changed.

GetMetricData

10 TPS per Region for operations that include Metrics Insights queries. For operations that do not include Metrics Insights queries, the quota is 50 TPS per Region. This is the maximum number of operation requests you can make per second without being throttled. You can request a quota increase.

For GetMetricData operations that include a Metrics Insights query, the quota is 4,300,000 Datapoints Per Second (DPS) for the most recent 3 hours. This is calculated against the total number of data points scanned by the query (which can include no more than 10,000 metrics.)

180,000 Datapoints Per Second (DPS) if the StartTime used in the API request is less than or equal to three hours from current time. 396,000 DPS if the StartTime is more than three hours from current time. This is the maximum number of datapoints you can request per second using one or more API calls without being throttled. This quota cannot be changed.

The DPS is calculated based on estimated data points, not actual data points. The data point estimate is calculated using the requested time range, period, and retention period. This means that if the actual data points in the requested metrics are sparse or empty, throttling still occurs if the estimated data points exceed the quota. The DPS quota is per-Region.

GetMetricData

A single GetMetricData call can include as many as 500 MetricDataQuery structures.

This quota cannot be changed.

GetMetricStatistics

400 TPS per Region. The maximum number of operation requests you can make per second without being throttled.

You can request a quota increase.

GetMetricWidgetImage

Up to 500 metrics per image. This quota cannot be changed.

20 TPS per Region. The maximum number of operation requests you can make per second without being throttled. This quota cannot be changed.

ListMetrics

25 TPS per Region. The maximum number of operation requests you can make per second without being throttled.

You can request a quota increase.

Metric data storage

15 months. This quota cannot be changed.

Metric data values

The value of a metric data point must be within the range of -2^360 to 2^360. Special values (for example, NaN, +Infinity, -Infinity) are not supported. This quota cannot be changed.

MetricDatum items

20/PutMetricData request. A MetricDatum object can contain a single value or a StatisticSet object representing many values. This quota cannot be changed.

Metrics

10/month/customer for free.

Metrics Insights queries

A single query can process no more than 10,000 metrics. This means that if the SELECT, FROM, and WHERE clauses would match more than 10,000 metrics, only the first 10,000 of these metrics that are found will be processed by the query.

A single query can return no more than 500 time series.

Alarm evaluation period

The maximum value, calculated by multiplying the alarm period by the number of evaluation periods used, is one day (86,400 seconds). This quota cannot be changed.

PutMetricAlarm request

3 TPS per Region. The maximum number of operation requests you can make per second without being throttled.

You can request a quota increase.

PutMetricData request

40 KB for HTTP POST requests. PutMetricData can handle 150 transactions per second (TPS), which is the maximum number of operation requests you can make per second without being throttled.

You can request a quota increase.

Amazon SNS email notifications

1,000/month/customer for free.