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Perf テーブルのクエリ

  • [アーティクル]

RDMA 以外のアクティビティ

クラスター内のノードの RDMA 以外のアクティビティを表示します。

//Select your log analytics workspace and replace enter nodename with the name of the node within a cluster on which you want to set the alert for Non-RDMA activity
Perf
| where ObjectName == "Network Interface"
| extend Nodename= tostring(split(Computer, ".")[0])
| where Nodename =~'enter nodename'
| summarize NetworkUsage = sum(CounterValue), Nodename = any(Nodename) by TimeGenerated
| summarize arg_max(TimeGenerated, Nodename, NetworkUsage)

RDMA アクティビティ

クラスター内のノードの RDMA アクティビティを表示します。

//Select log analytics workspace and replace enter nodename with the name of the node within a cluster on which you want to set the alert for RDMA activity
Perf
| where ObjectName == "RDMA Activity"
| extend Nodename= tostring(split(Computer, ".")[0])
| where Nodename =~'enter nodename'
| summarize RdmaUsage = sum(CounterValue), Nodename = any(Nodename) by TimeGenerated
| summarize arg_max(TimeGenerated, Nodename, RdmaUsage)

収集されるデータは何ですか?

収集されたパフォーマンス カウンターとオブジェクトの種類 (プロセス、メモリ、プロセッサ) を一覧表示します。

Perf
| summarize by ObjectName, CounterName

メモリと CPU の使用

過去 1 時間に使用されたすべてのコンピューターのメモリと CPU をグラフ化します。

Perf
| where TimeGenerated > ago(1h)
| where (CounterName == "% Processor Time" and InstanceName == "_Total") or CounterName == "% Used Memory"
| project TimeGenerated, CounterName, CounterValue
| summarize avg(CounterValue) by CounterName, bin(TimeGenerated, 1m)
| render timechart

すべてのコンピューターの CPU 使用率パターンを計算し、パーセンタイル別にグラフ化します。

Perf
| where ObjectName == "Processor" and CounterName == "% Processor Time" and InstanceName == "_Total"
| summarize percentiles(CounterValue, 50, 90, 99) by bin(TimeGenerated, 1h)
| render timechart

ディスク領域が最も高い上位 10 台のコンピューター

使用可能なディスク領域が最も高い上位 10 台のコンピューターを表示します。

Perf
| where CounterName == "Free Megabytes" and InstanceName == "_Total"
| summarize arg_max(TimeGenerated, *) by Computer
| top 10 by CounterValue

収集されるデータは何ですか?

収集されたパフォーマンス カウンターとオブジェクトの種類 (プロセス、メモリ、プロセッサなど) を一覧表示します。

Perf
| summarize by ObjectName, CounterName

仮想マシンの使用可能なメモリ

時間の経過に伴う VM の使用可能なメモリをグラフに示します。

// To create an alert for this query, click '+ New alert rule'
Perf
| where ObjectName == "Memory" and
(CounterName == "Available MBytes Memory" or // the name used in Linux records
CounterName == "Available MBytes") // the name used in Windows records
|  summarize avg(CounterValue) by bin(TimeGenerated, 15min), Computer, _ResourceId // bin is used to set the time grain to 15 minutes
| render timechart

過去 1 日の CPU 使用率パターンを計算し、パーセンタイルでグラフ化します。

// To create an alert for this query, click '+ New alert rule'
Perf
| where CounterName == "% Processor Time"
| where ObjectName == "Processor"
| summarize avg(CounterValue) by bin(TimeGenerated, 15min), Computer, _ResourceId // bin is used to set the time grain to 15 minutes
| render timechart
// Perf table stores performance counters for Windows and Linux computers
// Counters are specified using ObjectName (performance object), InstanceName and CounterName
// % Processor Time captures CPU activity, ObjectNames can be Processor, Process and Process Information

仮想マシンの空きディスク領域

インスタンスごとの空きディスク領域の最新のレポートを表示します。

// To create an alert for this query, click '+ New alert rule'
Perf
| where ObjectName == "LogicalDisk" or // the object name used in Windows records
ObjectName == "Logical Disk" // the object name used in Linux records
| where CounterName == "Free Megabytes"
| summarize arg_max(TimeGenerated, *) by InstanceName // arg_max over TimeGenerated returns the latest record
| project TimeGenerated, InstanceName, CounterValue, Computer, _ResourceId

CPU 使用率別の上位 10 Virtual Machines

過去 7 日間の CPU 使用率で上位 10 個の VM を検索します。

Perf
| where TimeGenerated > ago(7d)
| where CounterName == "% Processor Time" and InstanceName == "_Total" 
| project TimeGenerated, Computer, ObjectName, CounterName, InstanceName, round(CounterValue, 2)
| summarize arg_max(TimeGenerated, *) by Computer
| top 10 by CounterValue

下部 10 空きディスク領域 %

下位 10 コンピューター別の空きディスク領域 % (過去 7 日間)。

Perf
| where TimeGenerated > ago(7d)
| where (ObjectName == "Logical Disk" or ObjectName == "LogicalDisk") and CounterName contains "%" and InstanceName != "_Total" and InstanceName != "HarddiskVolume1"
| project TimeGenerated, Computer, ObjectName, CounterName, InstanceName, CounterValue 
| summarize arg_max(TimeGenerated, *) by Computer
| top 10 by CounterValue desc

コンテナー CPU

平均 30 分以上のすべてのコンテナー CPU 使用率を表示します。

// To create an alert for this query, click '+ New alert rule'
//Select the Line chart display option: can we calculate percentage?
Perf
| where ObjectName == "K8SContainer" and CounterName == "cpuUsageNanoCores"
| summarize AvgCPUUsageNanoCores = avg(CounterValue) by bin(TimeGenerated, 30m), InstanceName, _ResourceId

コンテナー メモリ

30 分間隔で平均されたコンテナー CPU を表示します。

// To create an alert for this query, click '+ New alert rule'
//Select the Line chart display option: can we calculate percentage?
let threshold = 75000000; // choose a threshold 
Perf
| where ObjectName == "K8SContainer" and CounterName == "memoryRssBytes"
| summarize AvgUsedRssMemoryBytes = avg(CounterValue) by bin(TimeGenerated, 30m), InstanceName, _ResourceId
| where AvgUsedRssMemoryBytes > threshold 
| render timechart

[インスタンス] 先週からの平均 CPU 使用率の増加

過去 1 週間のインスタンス別の平均 CPU 増加を降順で表示します。

// To create an alert for this query, click '+ New alert rule'
//Show which instances grew CPU usage from last week to current
Perf
| where TimeGenerated > ago(7d) //This week Average CPU Usage Nano Cores
| where ObjectName == "K8SContainer" and CounterName == "cpuUsageNanoCores"
| summarize ThisWeekAvgCPU = avg(CounterValue) by InstanceName, _ResourceId
| join kind= leftouter (
    //Previous week Average CPU Usage Nano Cores
    Perf
    | where TimeGenerated > ago(14d) and TimeGenerated <= ago(7d)
    | where ObjectName == "K8SContainer" and CounterName == "cpuUsageNanoCores"
    | summarize PrevWeekAvgCPU = avg(CounterValue) by InstanceName, _ResourceId
) on InstanceName, _ResourceId
| extend InstanceNameParts = split(InstanceName, "/")  //array of the parts of the instance name
| extend ShortInstanceName = InstanceNameParts[(array_length(InstanceNameParts)-1)] //extract the last part of the instance name
| extend ThisWeekAvgCPU = round(ThisWeekAvgCPU,0) 
| extend PrevWeekAvgCPU = round(iff(isempty(PrevWeekAvgCPU),0.0,PrevWeekAvgCPU),0) //When doing join with kind=leftouter, missing matches has empty value. To calculate growth, it should be converted to zero. In this case, empty value means that instance did not exist in the previous week
| extend AvgCPUGrowth = round(ThisWeekAvgCPU - PrevWeekAvgCPU , 0) //Calculate growth
| project-away InstanceName1,InstanceNameParts //Remove redundant fields
| order by AvgCPUGrowth desc

Perf で検索

Perf で検索して Perf テーブル内の特定の値を検索します。/nNote では、結果を生成するために SeachValue> パラメーターを<更新する必要があります

// This query requires a parameter to run. Enter value in SearchValue to find in table.
let SearchValue =  "<SearchValue>";//Please update term you would like to find in the table.
Perf
| where * contains tostring(SearchValue)
| take 1000