Module record 

Perf recording types and statistics.

Structs

PerfFrequencyLimit

Error returned when the requested sample rate exceeds the kernel’s perf_event_max_sample_rate.

PollSummary

Work completed by one Recorder::poll call.

Recorder

Records stack samples for one or more Linux processes.

RecorderOptions

Options used when attaching a Recorder to a process.

RecordingSummary

Counters collected while recording.

SampleErrorStats

Atomic counters for sample error statistics.

UnwindFallbackStats

Counts successful unwind steps that had to use frame pointers.

Enums

AttachMode

How recording should attach to a process.

AttachOutcome

Result of adding a process to an existing recording.

RefreshOutcome

Result of reconciling an attached process’s thread list.

SampleErrorKind

Categories of sample failures for statistics tracking.

SampleRate

Valid sampling frequency.

UnwindFallbackKind

Reason framehop used frame-pointer unwinding instead of module unwind data.

Constants

MAX_SAMPLE_USER_STACK

Maximum accepted sample_stack_user request, in bytes. The kernel may return fewer bytes so the complete perf record still fits its size field. Acts as a ceiling for RecorderOptions::stack_size; larger values are rejected.

Functions

max_sample_rate

Read the kernel’s current maximum perf sample rate.