Struct glommio::RingIoStats

pub struct RingIoStats { /* private fields */ }

Stores information about IO performed in a specific ring

Implementations

impl RingIoStats

pub fn files_opened(&self) -> u64

The total amount of files opened in this executor so far.

files_opened - files_closed gives the current open files count

pub fn files_closed(&self) -> u64

The total amount of files closed in this executor so far.

files_opened - files_closed gives the current open files count

pub fn file_reads(&self) -> (u64, u64)

File read IO stats

Returns the number of individual read ops as well as bytes read

pub fn file_deduped_reads(&self) -> (u64, u64)

File read IO stats (deduplicated)

Returns the number of reads that fed from another preexisting buffer

pub fn file_buffered_reads(&self) -> (u64, u64)

Buffered file read IO stats

Returns the number of individual buffered read ops as well as bytes read

pub fn file_writes(&self) -> (u64, u64)

File write IO stats

Returns the number of individual write ops as well as bytes written

pub fn file_buffered_writes(&self) -> (u64, u64)

Buffered file write IO stats

Returns the number of individual buffered write ops as well as bytes written

pub fn pre_reactor_io_scheduler_latency_us(&self) -> &DDSketch

The pre-reactor IO scheduler latency

Returns a distribution of measures tracking the time between the moment an IO operation was queued up and the moment it was submitted to the kernel

pub fn io_latency_us(&self) -> &DDSketch

The IO latency

Returns a distribution of measures tracking the time sources spent in the ring

pub fn post_reactor_io_scheduler_latency_us(&self) -> &DDSketch

The post-reactor IO scheduler latency

Returns a distribution of measures tracking the time between the moment an IO operation was marked as fulfilled by the reactor and when the result was consumed by the application code.

Trait Implementations

impl Clone for RingIoStats

fn clone(&self) -> RingIoStats

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for RingIoStats

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

Formats the value using the given formatter.

impl Default for RingIoStats

fn default() -> Self

Returns the “default value” for a type.

impl<'a> Sum<&'a RingIoStats> for RingIoStats

fn sum<I: Iterator<Item = &'a RingIoStats>>(iter: I) -> Self

Method which takes an iterator and generates Self from the elements by “summing up” the items.