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%SYS
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%SYS
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A class describing the metrics kept for the Write Daemon cycle history. More...
Static Public Member Functions | |
| _.Library.Status | SetSummary (_.Library.String Function, _.Library.String Period) |
| Configure the summary methods for this class for either the Hourly or Daily summaries. More... | |
Public Attributes | |
| BufferRedirty | |
| Number of database buffers written during the cycle that were also written. More... | |
| BufferWrite | |
| Number of database buffers written during the cycle. More... | |
| CycleTime | |
| Time (in milliseconds) for the Write Daemon cycle to complete. More... | |
| ProcInGlobal | |
| Number of processes actively holding global buffers at the start of the cycle. More... | |
| SizeWrite | |
| The size of database buffers (in KB) written during the cycle. More... | |
| Sleep | |
| Time (in milliseconds) that the Write Daemon was inactive before this cycle began. More... | |
| StartTime | |
| Time that this Write Daemon cycle began. More... | |
| TempQueue | |
| Number of "in-memory" (i.e. More... | |
| TempWrite | |
| Number of "in-memory" buffers written during the cycle (typically none written). More... | |
| TimeStamp | |
| Start time as UTC date/time stamp in $ZTS format. More... | |
| WIJTime | |
| Time (in milliseconds) that the Write Daemon was writing the Write Image Journal (WIJ) file. More... | |
| WriteTime | |
| Time (in milliseconds) that the Write Daemon was writing buffers to the database(s) More... | |
A class describing the metrics kept for the Write Daemon cycle history.
The system keeps a list of the last 20 cycles.
This class is primarily used as an embedded object in the PerfData interval collection. But it may also be accessed directly using the "Sample" query as an API to the Write Daemon cycle history.
For details, see History Monitor.
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Configure the summary methods for this class for either the Hourly or Daily summaries.
This is a comma-delimited list of functions to use for the summary. The available functions are Average, Maximum (high-water mark), Minimum (lowest value), Standard Deviation, Median, and Total. These are abbreviated in the 'Function' argument as "Avg", "Max", "Min", StDev", Med", and "Tot". If nothing is specified, the default is "Avg,Max,StDev". You may also specify the string "None" for a summary period to disable that summary.
A null 'Function' argument will return the current summary setting in the 'Function' variable.
The 'Period' argument can be either "Hourly" or "Daily".
| BufferRedirty |
Number of database buffers written during the cycle that were also written.
in the prior cycle.
| BufferWrite |
Number of database buffers written during the cycle.
| CycleTime |
Time (in milliseconds) for the Write Daemon cycle to complete.
| ProcInGlobal |
Number of processes actively holding global buffers at the start of the cycle.
| SizeWrite |
The size of database buffers (in KB) written during the cycle.
| Sleep |
Time (in milliseconds) that the Write Daemon was inactive before this cycle began.
| StartTime |
Time that this Write Daemon cycle began.
| TempQueue |
Number of "in-memory" (i.e.
IRISTemp) buffers used at the start of the cycle.
| TempWrite |
Number of "in-memory" buffers written during the cycle (typically none written).
| TimeStamp |
Start time as UTC date/time stamp in $ZTS format.
| WIJTime |
Time (in milliseconds) that the Write Daemon was writing the Write Image Journal (WIJ) file.
| WriteTime |
Time (in milliseconds) that the Write Daemon was writing buffers to the database(s)
1.9.1