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daemon: progressive logarithmic back-off for idle periods

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1min -> 1.5x, 2min -> 2x, 4min -> 3x, etc.

Addresses poll interval inflation issues caused by noise in battery
measurements and hopefully improve power efficiency during extended
idle periods.
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NotAShelf 2025-05-17 03:22:30 +03:00
parent 6335f139f9
commit eea1f52c26
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GPG key ID: 29D95B64378DB4BF
1 changed files with 18 additions and 5 deletions
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23
src/daemon.rs
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@ -60,11 +60,24 @@ fn compute_new(params: &IntervalParams) -> u64 {
// Adjust for system idleness // Adjust for system idleness
if params.is_system_idle { if params.is_system_idle {
// If the system has been idle for a while, increase interval // Progressive back-off based on idle time duration
let idle_time = params.last_user_activity.as_secs(); let idle_time_minutes = params.last_user_activity.as_secs() / 60;
if idle_time > 300 {
// 5 minutes if idle_time_minutes >= 1 {
adjusted_interval = (adjusted_interval as f32 * 2.0) as u64; // Logarithmic back-off starting after 1 minute of idleness
// Use log base 2 to double the interval for each power of 2 minutes of idle time
// Example: 1min->1.5x, 2min->2x, 4min->3x, 8min->4x, 16min->5x, etc.
let idle_factor = 1.0 + (idle_time_minutes as f32).log2().max(0.5);
// Cap the multiplier to avoid excessive intervals
let capped_factor = idle_factor.min(5.0);
debug!(
"System idle for {} minutes, applying idle factor: {:.1}x",
idle_time_minutes, capped_factor
);
adjusted_interval = (adjusted_interval as f32 * capped_factor) as u64;
} }
} }