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PerCpuMetrics

scx_mlfq::stats

Struct PerCpuMetrics 

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pub struct PerCpuMetrics {
    pub id: u32,
    pub freq_khz: u64,
    pub cur_freq_khz: u64,
    pub llc_id: u32,
    pub smt: bool,
    pub running_queue: i32,
    pub running_pid: u32,
    pub rt_occupied: bool,
    pub running_gpu_submit: u32,
}
Expand description

One entry of the web UI’s per-CPU card grid.

The static fields (freq_khz, llc_id, smt) are seeded once at attach from the host topology (topology::web_cpu_static); the dynamic fields (running_queue, running_pid, rt_occupied, running_gpu_submit) are refreshed from the BPF per-CPU maps on every web-metrics poll. The carriers do not take part in the stats server’s delta() accounting.

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§id: u32

CPU id.

§freq_khz: u64

Maximum operating frequency of the CPU, in kHz.

§cur_freq_khz: u64

Current operating frequency of the CPU, in kHz, refreshed from sysfs at most once per second while the web UI serves stats. 0 when the cpufreq driver exposes no current frequency.

§llc_id: u32

LLC domain id of the CPU (0 when the domain is unknown).

§smt: bool

True when the CPU is the non-primary thread of an SMT core, the virtual sibling. Display-only, see topology::web_cpu_static.

§running_queue: i32

Queue of the currently running task (0 = idle, 1..3).

§running_pid: u32

PID of the currently running task, 0 when idle.

§rt_occupied: bool

True when a realtime-class task currently occupies the CPU.

§running_gpu_submit: u32

The gpu_submit value of the task now on this CPU, 0..4 in steps of FP_SHIFT. This is a snapshot of mlfq_cpu_state.running_gpu_submit (which mirrors task_ctx.gpu_submit at ops.running()), not a counter. It decays by one on long idle and is bumped at most once per 10 ms, so a burst of trace hits for one job counts as one. The system-wide lifetime total is WebMetrics.gpu_submit_total.

Trait Implementations§

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impl Clone for PerCpuMetrics

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fn clone(&self) -> PerCpuMetrics

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Debug for PerCpuMetrics

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

Formats the value using the given formatter. Read more
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impl Default for PerCpuMetrics

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fn default() -> PerCpuMetrics

Returns the “default value” for a type. Read more
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impl<'de> Deserialize<'de> for PerCpuMetrics

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fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl Serialize for PerCpuMetrics

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fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>
where __S: Serializer,

Serialize this value into the given Serde serializer. Read more

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