Struct DriverStats 

pub struct DriverStats {
    pub waits: u64,
    pub recv_calls: u64,
    pub send_calls: u64,
    pub accept_calls: u64,
    pub other_calls: u64,
    pub sqes: u64,
    pub os_events: u64,
    pub sleeps: u64,
    pub spin_polls: u64,
}

System calls and events counted by a driver (plain counters; read them on the loop thread).

Fields

waits: u64

Waits: epoll_wait, kevent, io_uring_enter, GetQueuedCompletionStatusEx.

recv_calls: u64

Receive calls: recv, recvmmsg, WSARecv/WSARecvMsg (io_uring: none, completions only).

send_calls: u64

Send calls: sendmsg/send, WSASend (io_uring: none, submissions only).

accept_calls: u64

Accept calls: accept4, AcceptEx.

other_calls: u64

Other system calls: registration, epoll_ctl, eventfd reads, io_uring_register, …

sqes: u64

io_uring submission queue entries pushed (buffer hand-overs with PROVIDE_BUFFERS not counted).

os_events: u64

Completions or readiness events taken from the OS.

sleeps: u64

Waits that blocked (put the thread to sleep, or could have: a non-zero timeout).

spin_polls: u64

Non-blocking polls made while busy polling (also counted in waits when they were system calls; io_uring polls its rings in user space and enters only when work is flagged).

Implementations

impl DriverStats

pub fn syscalls(&self) -> u64

All counted system calls.

Trait Implementations

impl Clone for DriverStats

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for DriverStats

impl Debug for DriverStats

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for DriverStats

fn default() -> Self

Returns the “default value” for a type.

impl Eq for DriverStats

impl PartialEq for DriverStats

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for DriverStats