HP System Reporter E-Media Kit, System Reporter Media Kit 10.30, Common Performance Table Columns

3PAR System Reporter User’s Guide System Reporter 2.8

10.4.9 Common Performance Table Columns

The statport, statvlun, statld and statpd tables all have a common set of columns for the performance data. These columns are described in Table 10-19.

Table 10-19.Common Performance Columns

Column	Type	Comment
begin	DOUBLE PRECISION NOT	Timestamp value indicating when the
	NULL	counting started (typically when the system
		was rebooted or the device was created).
		Two count samples should only be
		compared if the begin value is the same for
		the two samples. For example, the
		difference between rcount values of two
		samples represents the number of read
		operations in the interval between those
		samples only if the begin values are the
		same for those samples.
d_begin	DOUBLE PRECISION NOT	Difference between begin value from last
	NULL	sample for the same object.
now	DOUBLE PRECISION NOT	Timestamp value in microseconds. The
	NULL	difference in the now values of two
		samples should be used in calculating the
		time interval between two samples
d_now	DOUBLE PRECISION NOT	Difference between now value from last
	NULL	sample for the same object.
qlen	DOUBLE PRECISION NOT	Queue length at the time of the sample.
	NULL	qlen is an instantaneous measure, not an
		average queue length over the sample
		period.
		qlen may not be available for all objects
		and its value will be negative to indicate
		that it is invalid.

10.30

The Sample Data and Inventory Tables