# Amazon Elastic Container Service (Amazon ECS)
<a name="appinsights-metrics-ecs"></a>

CloudWatch Application Insights supports the following metrics:

**Topics**
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## CloudWatch built-in metrics
](#appinsights-metrics-ecs-built-in-metrics)
+ [

## Container Insights metrics
](#appinsights-metrics-ecs-container-insights-metrics)
+ [

## Container Insights Prometheus metrics
](#appinsights-metrics-ecs-container-insights-prometheus)

## CloudWatch built-in metrics
<a name="appinsights-metrics-ecs-built-in-metrics"></a>

CPUReservation

CPUUtilization

MemoryReservation

MemoryUtilization

GPUReservation

## Container Insights metrics
<a name="appinsights-metrics-ecs-container-insights-metrics"></a>

ContainerInstanceCount

CpuUtilized

CpuReserved

DeploymentCount

DesiredTaskCount

MemoryUtilized

MemoryReserved

NetworkRxBytes

NetworkTxBytes

PendingTaskCount

RunningTaskCount

ServiceCount

StorageReadBytes

StorageWriteBytes

TaskCount

TaskSetCount

instance\$1cpu\$1limit

instance\$1cpu\$1reserved\$1capacity

instance\$1cpu\$1usage\$1total

instance\$1cpu\$1utilization

instance\$1filesystem\$1utilization

instance\$1memory\$1limit

instance\$1memory\$1reserved\$1capacity

instance\$1memory\$1utilization

instance\$1memory\$1working\$1set

instance\$1network\$1total\$1bytes

instance\$1number\$1of\$1running\$1tasks

## Container Insights Prometheus metrics
<a name="appinsights-metrics-ecs-container-insights-prometheus"></a>

**Java JMX metrics**

java\$1lang\$1memory\$1heapmemoryusage\$1used

java\$1lang\$1memory\$1heapmemoryusage\$1committed

java\$1lang\$1operatingsystem\$1openfiledescriptorcount

java\$1lang\$1operatingsystem\$1maxfiledescriptorcount

java\$1lang\$1operatingsystem\$1freephysicalmemorysize

java\$1lang\$1operatingsystem\$1freeswapspacesize

java\$1lang\$1threading\$1threadcount

java\$1lang\$1classloading\$1loadedclasscount

java\$1lang\$1threading\$1daemonthreadcount

java\$1lang\$1garbagecollector\$1collectiontime\$1copy

java\$1lang\$1garbagecollector\$1collectiontime\$1ps\$1scavenge

java\$1lang\$1garbagecollector\$1collectiontime\$1parnew

java\$1lang\$1garbagecollector\$1collectiontime\$1marksweepcompact

java\$1lang\$1garbagecollector\$1collectiontime\$1ps\$1marksweep

java\$1lang\$1garbagecollector\$1collectiontime\$1concurrentmarksweep

java\$1lang\$1garbagecollector\$1collectiontime\$1g1\$1young\$1generation

java\$1lang\$1garbagecollector\$1collectiontime\$1g1\$1old\$1generation

java\$1lang\$1garbagecollector\$1collectiontime\$1g1\$1mixed\$1generation

java\$1lang\$1operatingsystem\$1committedvirtualmemorysize