cpc
Probe and Existing Tools
The cpc
provider has priority over per-LWP libcpc
usage, that is cputrack
, for access to counters. In the same manner as cpustat
, enabling probes causes all existing per-LWP
counter contexts to be invalidated. As long as enabled probes remain active, the counters will remain unavailable to cputrack-type
consumers.
Only one of cpustat
and DTrace may use the counter hardware at any one time. Ownership of the counters is given on a first-come, first-served basis.