The global buffer table stores performance information collected over a given time period on global buffers. One line is created for each global buffer.

Notes on collecting performance information

Set the performance information collection interval to no less than 60 seconds so that HiRDB performance is not affected adversely.

The following table shows the configuration of the global buffer table.

Table 27-7 Configuration of the global buffer table

ID	Object	Explanation	Type	Privilege	Data source
6.	hirBufferStatusTable	Global buffer table	SEQUENCE	not-access	--
6.1	hirBufferStatusEntry	Global buffer entry	SEQUENCE	not-access	--
6.1.1	hirBufferStatusSysIndex	HiRDB system identifier index	INTEGER	read-only	MIB command
6.1.2	hirBufferStatusBufferIndex	Global buffer identifier index	INTEGER	read-only	MIB command
6.1.3	hirBufferStatusInstance	Instance name HiRDB-identifier:server-name:global-buffer-name	Display String	read-only	MIB command
6.1.4	hirBufferStatusHirID	HiRDB identifier	Display String	read-only	MIB command
6.1.5	hirBufferStatusBufferName	Global buffer name	Display String	read-only	pdbufls -k sts -d
6.1.6	hirBufferStatusBufferPoolHitRate	Global buffer pool hit rate (%)	INTEGER	read-only	pdbufls -k sts -d
6.1.7	hirBufferStatusCurrentReferenceBuffers	Current number of reference buffers	INTEGER	read-only	pdbufls -k sts -d
6.1.8	hirBufferStatusCurrentUpdateBuffers	Current number of update buffers	INTEGER	read-only	pdbufls -k sts -d
6.1.9	hirBufferStatusDBSyncs	Number of synchronization points that have occurred	Gauge	read-only	pdbufls -k sts -d
6.1.10	hirBufferStatusLOBBufferInputPages	Number of LOB buffer batch input pages	Gauge	read-only	pdbufls -k sts -d
6.1.11	hirBufferStatusLOBBufferOutputPages	Number of LOB buffer batch output pages	Gauge	read-only	pdbufls -k sts -d
6.1.12	hirBufferStatusLOBBufferReadRequests	Number of LOB buffer read requests	Gauge	read-only	pdbufls -k sts -d
6.1.13	hirBufferStatusLOBBufferWriteRequests	Number of LOB buffer write requests	Gauge	read-only	pdbufls -k sts -d
6.1.14	hirBufferStatusOutOfBuffer	Number of times buffer shortage occurred	Gauge	read-only	pdbufls -k sts -d
6.1.15	hirBufferStatusPrefetchBufferShortages	Number of times prefetch buffer shortage occurred	Gauge	read-only	pdbufls -k sts -d
6.1.16	hirBufferStatusPrefetchHitRate	Prefetch hit rate (%)	INTEGER	read-only	pdbufls -k sts -d
6.1.17	hirBufferStatusPrefetchInputPages	Number of prefetch input pages	Gauge	read-only	pdbufls -k sts -d
6.1.18	hirBufferStatusPrefetchReadRequests	Number of prefetch read requests	Gauge	read-only	pdbufls -k sts -d
6.1.19	hirBufferStatusReads	Number of real read requests from disk	Gauge	read-only	pdbufls -k sts -d
6.1.20	hirBufferStatusReferenceBufferFlushes	Number of reference buffer flushes	Gauge	read-only	pdbufls -k sts -d
6.1.21	hirBufferStatusReferenceGets	Number of reference GETs	Gauge	read-only	pdbufls -k sts -d
6.1.22	hirBufferStatusReferenceHitRate	Reference request hit rate	INTEGER	read-only	pdbufls -k sts -d
6.1.23	hirBufferStatusServerName	Server name	Display String	read-only	pdbufls -k sts -d
6.1.24	hirBufferStatusUpdateBufferFlushes	Number of update buffer flushes	Gauge	read-only	pdbufls -k sts -d
6.1.25	hirBufferStatusUpdateGets	Number of update GETs	Gauge	read-only	pdbufls -k sts -d
6.1.26	hirBufferStatusUpdateHitRate	Update request hit rate (%)	INTEGER	read-only	pdbufls -k sts -d
6.1.27	hirBufferStatusUpdatedBufferTrigger	Number of update buffers that become output triggers during deferred write triggers	INTEGER	read-only	pdbufls -k sts -d
6.1.28	hirBufferStatusWaits	Number of times buffer lock-release wait occurred	Gauge	read-only	pdbufls -k sts -d
6.1.29	hirBufferStatusWrites	Number of real write operations to disk	Gauge	read-only	pdbufls -k sts -d
6.1.30	hirBufferStatusDummy	Cannot be referenced.	INTEGER	read-only	MIB command

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--: Not applicable