Struct HostPerf 

pub struct HostPerf {
    pub pc_id: String,
    pub at: DateTime<Utc>,
    pub cpu_pct: Option<f64>,
    pub cpu_count: Option<u32>,
    pub mem_used_bytes: Option<i64>,
    pub mem_total_bytes: Option<i64>,
    pub swap_used_bytes: Option<i64>,
    pub swap_total_bytes: Option<i64>,
    pub disk_read_bytes_per_sec: Option<f64>,
    pub disk_written_bytes_per_sec: Option<f64>,
    pub net_rx_bytes_per_sec: Option<f64>,
    pub net_tx_bytes_per_sec: Option<f64>,
}

Fields

pc_id: String

at: DateTime<Utc>

cpu_pct: Option<f64>

Whole-host CPU utilisation in percent (0..100), normalised across all logical cores — the Task Manager “CPU” column shape, NOT sysinfo’s per-core sum (which would report 800 on an 8-core box pegged at 100 %). On Windows the underlying signal is NtQuerySystemInformation(SystemProcessorPerformance Information); cost is sub-millisecond and scales with logical core count, not process count.

cpu_count: Option<u32>

Number of logical cores reported by sysinfo. Sent every tick so the SPA can render “8 cores” alongside the chart without needing a second API call into the inventory table.

mem_used_bytes: Option<i64>

Physical memory in use, bytes. sysinfo’s System::used_memory() — on Windows this is MEMORYSTATUSEX.ullTotalPhys - ullAvailPhys, matching Task Manager’s “In use” indicator.

mem_total_bytes: Option<i64>

Physical memory total, bytes. Constant for the lifetime of a host but sent every tick so the SPA can render a ratio without a second query.

swap_used_bytes: Option<i64>

Swap / pagefile used, bytes. None on systems with no configured swap (some sandboxes / containers).

swap_total_bytes: Option<i64>

disk_read_bytes_per_sec: Option<f64>

Disk read throughput across all volumes, bytes/sec. The agent diffs sysinfo’s cumulative Disk::usage() counters between successive ticks and divides by the elapsed wall time — backend stores the rate verbatim. None on the first tick after agent start (no prior sample to diff) and after any configuration-driven cadence change that resets the baseline.

disk_written_bytes_per_sec: Option<f64>

net_rx_bytes_per_sec: Option<f64>

Network receive throughput across all interfaces (including loopback), bytes/sec. Same diff-vs-prev-sample shape as disk_*_bytes_per_sec. We include loopback in the total because filtering it out reliably across Win / Linux is surprisingly fiddly and most fleet hosts don’t drive much loopback traffic.

net_tx_bytes_per_sec: Option<f64>

Trait Implementations

impl Clone for HostPerf

fn clone(&self) -> HostPerf

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for HostPerf

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for HostPerf

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for HostPerf

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

where __S: Serializer,

Serialize this value into the given Serde serializer.