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%Monitor.System.HistoryPerf

Class %Monitor.System.HistoryPerf Extends %Monitor.System.Adaptor [ System = 4 ]

%Monitor class to collect and manage part of the Monitor History Database. This class collects the SYS.History.PerfData samples for the Performance Metrics, as defined in the Performance and WriteDaemon classes, at short intervals (default of 30 seconds).

By default the SYS.History.PerfData collection is kept for 7 days and then purged. The number of days to keep may be modified using SYS.History.PerfData:SetPurge() The Detail samples can be automatically rolled up at the end of each day into Hourly (SYS.History.Hourly) or Daily (SYS.History Daily) summaries, which can be kept for longer periods.

Properties​

Day​

Property Day As %Integer [ Internal ];

Keep track of last date to see of it's time to purge/summarize

Plist​

Property Plist As %String [ Internal ];

Maintain a list of Performance properties for calculating deltas

Last​

Property Last As SYS.History.PerfData [ Internal ];

Keep a copy of the last PerfData sample for calculating deltas

User​

Property User As %RegisteredObject [ Internal ];

Keep a copy of the last UserPerf sample for calculating deltas

CtrList​

Property CtrList As array Of %List [ Internal ];

Keep a list of properties for 'counter' type user classes

Length​

Property Length As %Monitor.Integer;

Length of last sample

Status​

Property Status As %Monitor.String;

Status of last sample

Errors​

Property Errors As %Integer [ Internal ];

Keep count of consecutive errors

Methods​

Startup​

Method Startup() As %Status

Initialize property values

GetSample​

Method GetSample() As %Status

Get the basic SYS.History.PerfData sample for the Monitor History Database. This method also handles purging and accumulation of the Detail metrics into the long term database (SYS.History.Hourly and SYS.History.Daily).