Struct GpuUsage 

pub struct GpuUsage {
    pub gpu_ns: u64,
    pub busy_ns: u64,
    pub mem_ns: u64,
}

One process’s GPU counters, accumulated over its open DRM file descriptors.

A process can hold several DRM fds (render node, card node), so this is a sum rather than one device’s figure. That is the right shape for a process table: the question a row answers is “how much GPU is this program using”, not “which node is it using”.

Fields

gpu_ns: u64

Cumulative nanoseconds of GPU time attributed to this process.

busy_ns: u64

Cumulative nanoseconds the GPU was busy while this process had work queued. The percentage is drm-engine-* divided by this, which is why the engine figure alone is not a percentage.

mem_ns: u64

Cumulative nanoseconds of memory cycles, on drivers that report it.

Implementations

impl GpuUsage

pub fn percent(&self) -> Option<f32>

GPU utilisation in percent, 0.0..=100.0.

Returns None when the driver reports engine time but no drm-busy, in which case no percentage can be computed — inventing one from the sample interval would be a different quantity wearing the same label.

Trait Implementations

impl Clone for GpuUsage

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 GpuUsage

impl Debug for GpuUsage

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

Formats the value using the given formatter.

impl Default for GpuUsage

fn default() -> Self

Returns the “default value” for a type.

impl Eq for GpuUsage

impl PartialEq for GpuUsage

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for GpuUsage