# 具有数据点要求的指标
<a name="appinsights-metrics-datapoint-requirements"></a>

对于没有触发警报的明显默认阈值的指标，Application Insights 等到指标具有足够的数据点以预测触发警报的合理阈值。CloudWatch Application Insights 在告警创建之前检查的指标数据点要求如下：
+ 指标从过去 15 天到过去 2 天期间至少具有 100 个数据点。
+ 指标在最后一天至少具有 100 个数据点。

以下指标遵循这些数据点要求。请注意，CloudWatch 代理指标最多需要一小时才能创建警报。

**Topics**
+ [AWS/ApplicationELB](#appinsights-metrics-datapoint-requirements-app-elb)
+ [AWS/AutoScaling](#appinsights-metrics-datapoint-requirements-autoscaling)
+ [AWS/EC2](#appinsights-metrics-datapoint-requirements-ec2)
+ [Elastic Block Store (EBS)](#appinsights-metrics-datapoint-requirements-ebs)
+ [AWS/ELB](#appinsights-metrics-datapoint-requirements-elb)
+ [AWS/RDS](#appinsights-metrics-datapoint-requirements-rds)
+ [AWS/Lambda](#appinsights-metrics-datapoint-requirements-lambda)
+ [AWS/SQS](#appinsights-metrics-datapoint-requirements-sqs)
+ [AWS/CWAgent](#appinsights-metrics-datapoint-requirements-cwagent)
+ [AWS/DynamoDB](#appinsights-metrics-datapoint-requirements-dynamo)
+ [AWS/S3](#appinsights-metrics-datapoint-requirements-s3)
+ [AWS/States](#appinsights-metrics-datapoint-requirements-states)
+ [AWS/ApiGateway](#appinsights-metrics-datapoint-requirements-api-gateway)
+ [AWS/SNS](#appinsights-metrics-datapoint-requirements-sns)

## AWS/ApplicationELB
<a name="appinsights-metrics-datapoint-requirements-app-elb"></a>

ActiveConnectionCount

ConsumedLCUs

HTTPCode\$1ELB\$14XX\$1Count

HTTPCode\$1Target\$12XX\$1Count

HTTPCode\$1Target\$13XX\$1Count

HTTPCode\$1Target\$14XX\$1Count

HTTPCode\$1Target\$15XX\$1Count

NewConnectionCount

ProcessedBytes

TargetResponseTime

UnHealthyHostCount

## AWS/AutoScaling
<a name="appinsights-metrics-datapoint-requirements-autoscaling"></a>

GroupDesiredCapacity

GroupInServiceInstances

GroupMaxSize

GroupMinSize

GroupPendingInstances

GroupStandbyInstances

GroupTerminatingInstances

GroupTotalInstances

## AWS/EC2
<a name="appinsights-metrics-datapoint-requirements-ec2"></a>

CPUCreditBalance

CPUCreditUsage

CPUSurplusCreditBalance

CPUSurplusCreditsCharged

CPUUtilization

磁盘读取字节数

磁盘读取操作

磁盘写入字节数

磁盘写入操作

EBSByteBalance%

EBSIOBalance%

EBSReadBytes

EBSReadOps

EBSWriteBytes

EBSWriteOps

NetworkIn

网络输出

NetworkPacketsIn

NetworkPacketsOut

## Elastic Block Store (EBS)
<a name="appinsights-metrics-datapoint-requirements-ebs"></a>

VolumeReadBytes 

VolumeWriteBytes 

VolumeReadOps

VolumeWriteOps

VolumeTotalReadTime 

VolumeTotalWriteTime 

VolumeIdleTime

VolumeQueueLength

VolumeThroughputPercentage

VolumeConsumedReadWriteOps

BurstBalance

## AWS/ELB
<a name="appinsights-metrics-datapoint-requirements-elb"></a>

EstimatedALBActiveConnectionCount

EstimatedALBConsumedLCUs

EstimatedALBNewConnectionCount

EstimatedProcessedBytes

HTTPCode\$1Backend\$14XX

HTTPCode\$1Backend\$15XX

HealthyHostCount

延迟

RequestCount

SurgeQueueLength

UnHealthyHostCount

## AWS/RDS
<a name="appinsights-metrics-datapoint-requirements-rds"></a>

ActiveTransactions

AuroraBinlogReplicaLag

AuroraReplicaLag

BackupRetentionPeriodStorageUsed

BinLogDiskUsage

BlockedTransactions

CPUCreditBalance

CommitLatency

CommitThroughput

DDLLatency

DDLThroughput

DMLLatency

DMLThroughput

DatabaseConnections

死锁数

DeleteLatency

DeleteThroughput

DiskQueueDepth

EngineUptime

FreeLocalStorage

FreeStorageSpace

FreeableMemory

InsertLatency

InsertThroughput

LoginFailures

NetworkReceiveThroughput

NetworkThroughput

NetworkTransmitThroughput

查询

读取 IOPS

ReadThroughput

SelectLatency

SelectThroughput

SnapshotStorageUsed

TotalBackupStorageBilled

UpdateLatency

UpdateThroughput

VolumeBytesUsed

VolumeReadIOPs

VolumeWriteIOPs

写入 IOPS

写入吞吐量

## AWS/Lambda
<a name="appinsights-metrics-datapoint-requirements-lambda"></a>

错误

DeadLetterErrors

Duration

节流

IteratorAge

ProvisionedConcurrencySpilloverInvocations

## AWS/SQS
<a name="appinsights-metrics-datapoint-requirements-sqs"></a>

ApproximateAgeOfOldestMessage

ApproximateNumberOfMessagesDelayed

ApproximateNumberOfMessagesNotVisible

ApproximateNumberOfMessagesVisible

NumberOfEmptyReceives

NumberOfMessagesDeleted

NumberOfMessagesReceived

NumberOfMessagesSent

## AWS/CWAgent
<a name="appinsights-metrics-datapoint-requirements-cwagent"></a>

LogicalDisk % Free Space

Memory % Committed Bytes In Use

Memory Available Mbytes

Network Interface Bytes Total/sec

Paging File % Usage

PhysicalDisk % Disk Time

PhysicalDisk Avg。Disk sec/Read

PhysicalDisk Avg。Disk sec/Write

PhysicalDisk Disk Read Bytes/sec

PhysicalDisk Disk Reads/sec

PhysicalDisk Disk Write Bytes/sec

PhysicalDisk Disk Writes/sec

Processor % Idle Time

Processor % Interrupt Time

Processor % Processor Time

Processor % User Time

SQLServer:Access Methods Forwarded Records/sec

SQLServer:Access Methods Page Splits/sec

SQLServer:Buffer Manager Buffer cache hit ratio

SQLServer:Buffer Manager Page life expectancy

SQLServer：接收的数据库副本文件字节数/秒

SQLServer：接收的数据库副本日志字节数/秒

SQLServer：保留数据库副本日志以供撤消

SQLServer：数据库副本日志发送队列

SQLServer：数据库副本镜像写事务数/秒

SQLServer：数据库副本恢复队列

SQLServer：剩余数据库副本重做字节数

SQLServer：数据库副本已重做的字节数/秒

SQLServer：需要撤消的数据库副本总日志

SQLServer：数据库副本事务延迟

SQLServer:General Statistics Processes blocked

SQLServer:SQL Statistics Batch Requests/sec

SQLServer:SQL Statistics SQL Compilations/sec

SQLServer:SQL Statistics SQL Re-Compilations/sec

System Processor Queue Length

TCPv4 Connections Established

TCPv6 Connections Established

## AWS/DynamoDB
<a name="appinsights-metrics-datapoint-requirements-dynamo"></a>

已使用读取容量单位

已使用写入容量单位

ReadThrottleEvents

WriteThrottleEvents

TimeToLiveDeletedItemCount

ConditionalCheckFailedRequests

TransactionConflict

ReturnedRecordsCount

PendingReplicationCount

ReplicationLatency

## AWS/S3
<a name="appinsights-metrics-datapoint-requirements-s3"></a>

ReplicationLatency

BytesPendingReplication

OperationsPendingReplication

4xxErrors

5xxErrors

AllRequests

GetRequests

PutRequests

DeleteRequests

HeadRequests

PostRequests

SelectRequests

ListRequests

SelectScannedBytes

SelectReturnedBytes

FirstByteLatency

TotalRequestLatency

BytesDownloaded

BytesUploaded

## AWS/States
<a name="appinsights-metrics-datapoint-requirements-states"></a>

ActivitiesScheduled

ActivitiesStarted

ActivitiesSucceeded

ActivityScheduleTime

ActivityRuntime

ActivityTime

LambdaFunctionsScheduled

LambdaFunctionsStarted

LambdaFunctionsSucceeded

LambdaFunctionScheduleTime

LambdaFunctionRuntime

LambdaFunctionTime

ServiceIntegrationsScheduled

ServiceIntegrationsStarted

ServiceIntegrationsSucceeded

ServiceIntegrationScheduleTime

ServiceIntegrationRuntime

ServiceIntegrationTime

ProvisionedRefillRate

ProvisionedBucketSize

ConsumedCapacity

ThrottledEvents

## AWS/ApiGateway
<a name="appinsights-metrics-datapoint-requirements-api-gateway"></a>

4XXError 

IntegrationLatency

延迟

DataProcessed

CacheHitCount

CacheMissCount

## AWS/SNS
<a name="appinsights-metrics-datapoint-requirements-sns"></a>

NumberOfNotificationsDelivered

NumberOfMessagesPublished

NumberOfNotificationsFailed

NumberOfNotificationsFilteredOut

NumberOfNotificationsFilteredOut-InvalidAttributes

NumberOfNotificationsFilteredOut-NoMessageAttributes

NumberOfNotificationsRedrivenToDlq

NumberOfNotificationsFailedToRedriveToDlq

SMSSuccessRate