Used only with the caliper advise command. See “Command Line to Invoke the Advisor” (p. 79).
Used only with the caliper advise command. See “Command Line to Invoke the Advisor” (p. 79).
Used only with the caliper advise command. See “Command Line to Invoke the Advisor” (p. 79).
Controls the sampling of the branch trace buffer (BTB)/execution trace buffer (ETB), which produces the statistical call graph. This option is used only with the scgprof measurement.
The default sampling of the BTB is:
branch_sampling_spec | "1000, 5%, BRANCH_EVENT" |
The default sampling of the ETB is:
branch_sampling_spec | "1000, 5%, ETB_EVENT" |
which means that every 1000 BRANCH_EVENT CPU events (on the Integrity servers Itanium 2) and ETB_EVENT CPU events (on the Integrity servers
Use this option to change the default.
rate | Specifies how many sampling events should occur between |
| samples. |
| The default value is 1,000 events. |
variation | Specifies how much to vary the number of events between |
| samples. The number or percentage of CPU_counter events |
| that HP Caliper uses to vary the sampling rate. HP Caliper |
| adds or subtracts this number from the interval to vary the |
| sampling frequency. |
| The default value is 5 percent. |
cpu_event | Specifies CPU events to measure. The default value is |
| BRANCH_EVENT (or ETB_EVENT on the Integrity servers |
| |
| processors). Do not change this default value: doing so will |
| result in a useless call graph. |
threshold=int | An integer value that specifies how HP Caliper counts events. |
| The default value is zero. Do not change this default value: |
| doing so will result in a useless call graph. |