History Sampling Examples

CA SystemEDGE User Guide › History Collection › History Sampling Examples

History Sampling Examples

The following table shows sample entries in the History Control table:

Index	Desc	Int	ObjID	Type	Bckts- Req	Bckts- Grant	Last- Call	Create- Time	Status
1	1 Minute CPU Load Avg.	60	loadAverage1Min.0	2	5	5	0d 6:30:00	0d 0:0:0	active
2	Memory In Use	30	memInUse.0	2	10	10	0d 6:30:30	0d 0:0:0	active
3	Swap Capacity	900	swapCapacity.0	2	48	48	0d 6:30:00	0d 2:00:00	active

The History Control table uses the SNMPv2 Structure of Management Information (SMI) Row Status Textual Convention for adding and deleting rows.

In this table, the rows are defined as follows:

Control row 1 causes the agent to poll the 1-minute load average every minute and to store the most recent 5 samples (5 minutes).
Control row 2 causes the agent to poll the memoryInUse MIB variable every 30 seconds and to store the most recent 10 samples (5 minutes).
Control row 3 causes the agent to poll the swapCapacity variable (percentage of swap in use) every 15 minutes and to store the most recent 48 samples. By storing 48 samples, a management system needs to upload these samples only once every 12 hours (that is, 48 samples at 15-minute intervals provide 12 hours of coverage).

The following table shows the history samples that were stored in the History table as a result of the sampling configuration defined in the sample History Control table:

Index	SampleIndex	StartTime	SampleTime	Value
1	387	0d 0:0:0	0d 6:26:00	2
1	388	0d 0:0:0	0d 6:27:00	0
1	389	0d 0:0:0	0d 6:28:00	1
1	390	0d 0:0:0	0d 6:29:00	2
1	391	0d 0:0:0	0d 6:30:00	2
2	772	0d 0:0:0	0d 6:26:00	32204
2	773	0d 0:0:0	0d 6:26:30	32213
:	:	:	:	:
:	:	:	:	:
2	781	0d 0:0:0	0d 6:30:30	32224
3	1	0d 2:0:0	0d 2:00:00	70
3	2	0d 2:0:0	0d 2:15:00	64
3	3	0d 2:0:0	0d 2:30:00	66
:	:	:	:	:
:	:	:	:	:
3	19	0d 2:0:0	0d 6:30:00	80

For more information about using the History Control table, see the chapter “History Collection.”