HP UX Caliper Software Overview Measurement, Available Measurements in Each Measurement Type

Table 1 Available Measurements in Each Measurement Type

Global	Sampled	Precise (HP-UX only)
ecount	alat	cgprof
	branch	fcount
	cgprof	fcover
	cpu
	cstack
	cycles
	dcache
	dtlb
	fprof
	icache
	itlb
	pmu_trace
	scgprof
	traps

NOTE: The cgprof measurement performs both sampled and precise measurements.

The measurements in the sampled category, with the exception of cpu and pmu_trace, show results grouped by function. A report produced by any of these measurements is referred to as a PMU histogram report.

The measurements in the precise category use dynamic instrumentation to perform their measurements.

Overview Measurement

The overview measurement enables collecting fprof, dcache, and cstack data in one single collection run. To run overview on an application enter:

$ caliper overview -o rpt my_app

The overview measurement multiplexes fprof, dcache, and cstackmeasurements at a time interval of 1 second. The default switch interval of 1 second can be changed using the --switch-interval=SECONDSoption. After each switch interval, Caliper will switch from one measurement to the next.

On system-wide runs, Caliper will multiplex fprof and dcache measurements. The following command line will collect system-wide fprof and dcache data for a duration of 300 seconds:

$ caliper overview -w -e 300 -o rpt

The sampling period of fprof, dcache and cstackmeasurements can be controlled using the following new options:

--fprof-sampling-spec evt_period[,variation[,cpu_event]] --dcache-sampling-spec evt_period[,variation[,cpu_event]] --cstack-sampling-spec time_period

The syntax of these options is similar to the --sampling-specoption:

evt_period Specifies how many sampling events should occur between samples.

variation Specifies how much to vary the number of events between samples (can be specified as either an exact count or as a percentage of the sampling rate if followed by %).

cpu_eventt specifies the CPU event to use for sampling.

time_period Is a sampling period in seconds, milliseconds, or microseconds (specified as Ns, Nms, orNus, respectively, where N is an integer).

Here is a complete example:

44 HP Caliper Measurement Configuration Files