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Consultas para a tabela Perf

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Para obter informações sobre como usar essas consultas no portal do Azure, consulte o tutorial do Log Analytics. Para a API REST, consulte Consulta.

Atividade não RDMA

Exibir atividade não RDMA de um nó dentro de um cluster.

//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)

Atividade RDMA

Exibir a atividade RDMA de um nó dentro de um cluster.

//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)

Quais dados estão sendo coletados?

Liste os contadores de desempenho coletados e os tipos de objeto (Processo, Memória, Processador).

Perf
| summarize by ObjectName, CounterName

Uso de memória e CPU

Faça um gráfico da memória e da CPU usadas de todos os computadores na última hora.

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

Calcule os padrões de uso da CPU em todos os computadores, gráfico por percentis.

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

Os 10 principais computadores com o maior espaço em disco

Mostre os 10 principais computadores com o maior espaço em disco disponível.

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

Quais dados estão sendo coletados?

Liste os contadores de desempenho coletados e os tipos de objetos (Processo, Memória, Processador...)

Perf
| summarize by ObjectName, CounterName

Memória disponível da Máquina Virtual

Trace a memória disponível da VM ao longo do tempo.

// 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

Calcule os padrões de uso da CPU no último dia, trace por percentis.

// 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

Espaço livre em disco da máquina virtual

Mostre o relatório mais recente de espaço livre em disco, por instância.

// 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

Dez principais máquinas virtuais por utilização de CPU

Encontre as 10 principais VMs por utilização da CPU nos últimos 7 dias.

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

Dez últimos percentuais de espaço livre em disco por computador

10 % de espaço livre em disco por computador, nos últimos 7 dias.

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

CPU do contêiner

Visualize todo o uso médio da CPU do contêiner em 30 minutos.

// 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

Memória de contêiner

A CPU do contêiner de exibição teve uma média de intervalos de 30 minutos.

// 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

Crescimento médio do uso da CPU em instâncias em relação à semana passada

Mostre o crescimento médio da CPU por instância na última semana por ordem decrescente.

// 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

Encontre em Perf

Localizar em Perf para pesquisar um valor específico na tabela Perf./nObserve que essa consulta requer a atualização do <parâmetro SeachValue> para produzir resultados

// 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