SysStats

scx_layered::stats

Struct SysStats 

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pub struct SysStats {
Show 28 fields
    pub at: f64,
    pub nr_nodes: usize,
    pub total: u64,
    pub local_sel: f64,
    pub local_enq: f64,
    pub open_idle: f64,
    pub affn_viol: f64,
    pub hi_fb: f64,
    pub lo_fb: f64,
    pub excl_collision: f64,
    pub excl_preempt: f64,
    pub excl_idle: f64,
    pub excl_wakeup: f64,
    pub proc_ms: u64,
    pub busy: f64,
    pub util: f64,
    pub hi_fb_util: f64,
    pub lo_fb_util: f64,
    pub antistall: u64,
    pub skip_preempt: u64,
    pub fixup_vtime: u64,
    pub preempting_mismatch: u64,
    pub fallback_cpu: u32,
    pub fallback_cpu_util: f64,
    pub layers: BTreeMap<String, LayerStats>,
    pub gpu_tasks_affinitized: u64,
    pub gpu_task_affinitization_ms: u64,
    pub system_cpu_util_ewma: f64,

}

Fields§

§at: f64

timestamp

§nr_nodes: usize

§of NUMA nodes

§total: u64

§sched events during the period

§local_sel: f64

% dispatched directly into an idle CPU from select_cpu

§local_enq: f64

% dispatched directly into an idle CPU from enqueue

§open_idle: f64

% open layer tasks scheduled into allocated but idle CPUs

§affn_viol: f64

% violated config due to CPU affinity

§hi_fb: f64

% sent to hi fallback DSQs

§lo_fb: f64

% sent to lo fallback DSQs

§excl_collision: f64

count of times an excl task skipped a CPU as the sibling was also excl

§excl_preempt: f64

count of times a sibling CPU was preempted for an excl task

§excl_idle: f64

count of times a CPU skipped dispatching due to an excl task on the sibling

§excl_wakeup: f64

count of times an idle sibling CPU was woken up after an excl task is finished

§proc_ms: u64

CPU time this binary consumed during the period

§busy: f64

CPU busy % (100% means all CPU)

§util: f64

CPU util % (100% means one CPU)

§hi_fb_util: f64

CPU util % used by hi fallback DSQs

§lo_fb_util: f64

CPU util % used by lo fallback DSQs

§antistall: u64

Number of tasks dispatched via antistall

§skip_preempt: u64

Number of times preemptions of non-scx tasks were avoided

§fixup_vtime: u64

Number of times vtime was out of range and fixed up

§preempting_mismatch: u64

Number of times cpuc->preempting_task didn’t come on the CPU

§fallback_cpu: u32

fallback CPU

§fallback_cpu_util: f64

per-layer statistics

§layers: BTreeMap<String, LayerStats>

fallback CPU util %

§gpu_tasks_affinitized: u64

Number of gpu tasks affinitized since scheduler start

§gpu_task_affinitization_ms: u64

Time (in ms) of last affinitization run.

§system_cpu_util_ewma: f64

System CPU utilization EWMA (10s window)

Implementations§

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impl SysStats

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pub fn new( stats: &Stats, bstats: &BpfStats, fallback_cpu: usize, ) -> Result<Self>

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pub fn format<W: Write>(&self, w: &mut W) -> Result<()>

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pub fn format_all<W: Write>(&self, w: &mut W) -> Result<()>

Trait Implementations§

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impl Clone for SysStats

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fn clone(&self) -> SysStats

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

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

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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 SysStats

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fn default() -> SysStats

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

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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 Meta for SysStats

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fn meta() -> StatsMeta

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impl Serialize for SysStats

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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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