scx_pandemonium/cli/
report.rs

1use anyhow::Result;
2
3use super::LOG_DIR;
4
5fn chrono_stamp() -> String {
6    let output = std::process::Command::new("date")
7        .arg("+%Y%m%d-%H%M%S")
8        .output()
9        .ok();
10    match output {
11        Some(o) if o.status.success() => String::from_utf8_lossy(&o.stdout).trim().to_string(),
12        _ => "unknown".to_string(),
13    }
14}
15
16pub fn save_report(content: &str, prefix: &str) -> Result<String> {
17    std::fs::create_dir_all(LOG_DIR)?;
18    let stamp = chrono_stamp();
19    let path = format!("{}/{}-{}.log", LOG_DIR, prefix, stamp);
20    std::fs::write(&path, content)?;
21    Ok(path)
22}
23
24pub fn mean_stdev(values: &[f64]) -> (f64, f64) {
25    let n = values.len();
26    if n == 0 {
27        return (0.0, 0.0);
28    }
29    let m: f64 = values.iter().sum::<f64>() / n as f64;
30    if n == 1 {
31        return (m, 0.0);
32    }
33    let variance: f64 = values.iter().map(|x| (x - m).powi(2)).sum::<f64>() / (n - 1) as f64;
34    (m, variance.sqrt())
35}
36
37pub fn percentile(sorted_vals: &[f64], p: f64) -> f64 {
38    if sorted_vals.is_empty() {
39        return 0.0;
40    }
41    let idx = (sorted_vals.len() as f64 * p / 100.0) as usize;
42    let idx = idx.min(sorted_vals.len() - 1);
43    sorted_vals[idx]
44}
45
46pub fn format_delta(delta_pct: f64, label: &str) -> String {
47    if delta_pct < 0.0 {
48        format!(
49            "{} DELTA: {:+.1}% (PANDEMONIUM IS {:.1}% FASTER)",
50            label,
51            delta_pct,
52            delta_pct.abs()
53        )
54    } else if delta_pct > 0.0 {
55        format!(
56            "{} DELTA: {:+.1}% (PANDEMONIUM IS {:.1}% SLOWER)",
57            label, delta_pct, delta_pct
58        )
59    } else {
60        format!("{} DELTA: 0.0% (NO DIFFERENCE)", label)
61    }
62}
63
64pub fn format_latency_delta(delta_us: f64, label: &str) -> String {
65    if delta_us < 0.0 {
66        format!(
67            "{} LATENCY DELTA: {:+.0}us (PANDEMONIUM IS {:.0}us BETTER)",
68            label,
69            delta_us,
70            delta_us.abs()
71        )
72    } else if delta_us > 0.0 {
73        format!(
74            "{} LATENCY DELTA: {:+.0}us (PANDEMONIUM IS {:.0}us WORSE)",
75            label, delta_us, delta_us
76        )
77    } else {
78        format!("{} LATENCY DELTA: 0us (SAME)", label)
79    }
80}
scx_pandemonium/cli/report.rs

scx_pandemonium/cli/
report.rs
