Enum PerfStatsLevel 

#[repr(i32)]
pub enum PerfStatsLevel {
    Uninitialized = 0,
    Disable = 1,
    EnableCount = 2,
    EnableWait = 3,
    EnableTimeExceptForMutex = 4,
    EnableTimeAndCPUTimeExceptForMutex = 5,
    EnableTime = 6,
    OutOfBound = 7,
}

How much work PerfContext measures.

These values come from PerfLevel in include/rocksdb/perf_level.h, not from the rocksdb_uninitialized-style constants in c.h. The c.h enum is stale: it never gained kEnableWait or kEnableTimeAndCPUTimeExceptForMutex, so from 3 upward its numbering no longer lines up with the C++ enum. rocksdb_set_perf_level casts straight to PerfLevel (c.cc:6384) without validating, so the C++ header is what actually decides behavior. Wiring these to the c.h constants would send the wrong level.

Variants

Uninitialized = 0

Unknown settings

Disable = 1

Disable perf stats

EnableCount = 2

Enables only count stats

EnableWait = 3

Enables count stats and time spent waiting for RocksDB work

EnableTimeExceptForMutex = 4

Count stats and enable time stats except for mutexes

EnableTimeAndCPUTimeExceptForMutex = 5

Other than time, also measure CPU time counters. Still don’t measure time (neither wall time nor CPU time) for mutexes

EnableTime = 6

Enables count and time stats

OutOfBound = 7

N.B must always be the last value!

Trait Implementations

impl Clone for PerfStatsLevel

fn clone(&self) -> PerfStatsLevel

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for PerfStatsLevel

impl Debug for PerfStatsLevel

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

Formats the value using the given formatter.

impl Eq for PerfStatsLevel

impl PartialEq for PerfStatsLevel

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for PerfStatsLevel