DESCRIPTION

struct quark_queue_stats {
	u64	insertions;
	u64	removals;
	u64	aggregations;
	u64	non_aggregations;
	u64	lost;
	u64	garbage_collections;
	u64	stalls;
	int	backend;
};

insertions

A counter of all events that were inserted into the queue sorting/buffering structures, this is roughly 1:1 with the actual events we read from the backend.

removals

A counter of removals of the above, you can count alive items by counting the difference.

aggregations

A counter of how many events were aggregated, this is an absolute counter, meaning a FORK+EXEC+EXIT counts as 1 aggregation, which consumes 3 events.

non_aggregations

The opposite of aggregations. It is increased by one when we didn't aggregate.

lost

A counter of missed backend events. This can happen if the user didn't call quark_queue_get_event(3) fast enough or if quark simply can't handle the load, the former is way more likely. It is a state counter representing total loss, the user should compare to an old reading to know if it increased.

garbage_collections

A counter of cached objects (processes, sockets and pods) that were deleted after expiring their grace time.

stalls

A counter of perf rings that are stalled due to corrupt records. A stalled ring is abandoned and no further events are read from it. Only meaningful on the QQ_KPROBE backend, zero on QQ_EBPF.

backend

Active queue backend, either QQ_EBPF or QQ_KPROBE.