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Configurable ME draining writer overflow threshold

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This commit is contained in:
Alexey
2026-03-15 12:13:46 +03:00
parent 2be3e4ab7f
commit 58f26ba8a7
7 changed files with 250 additions and 0 deletions
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4
src/config/defaults.rs
View File

@@ -584,6 +584,10 @@ pub(crate) fn default_me_pool_drain_ttl_secs() -> u64 {
90
}
pub(crate) fn default_me_pool_drain_threshold() -> u64 {
128
}
pub(crate) fn default_me_bind_stale_ttl_secs() -> u64 {
default_me_pool_drain_ttl_secs()
}

10
src/config/hot_reload.rs
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@@ -55,6 +55,7 @@ pub struct HotFields {
pub me_reinit_coalesce_window_ms: u64,
pub hardswap: bool,
pub me_pool_drain_ttl_secs: u64,
pub me_pool_drain_threshold: u64,
pub me_pool_min_fresh_ratio: f32,
pub me_reinit_drain_timeout_secs: u64,
pub me_hardswap_warmup_delay_min_ms: u64,
@@ -135,6 +136,7 @@ impl HotFields {
me_reinit_coalesce_window_ms: cfg.general.me_reinit_coalesce_window_ms,
hardswap: cfg.general.hardswap,
me_pool_drain_ttl_secs: cfg.general.me_pool_drain_ttl_secs,
me_pool_drain_threshold: cfg.general.me_pool_drain_threshold,
me_pool_min_fresh_ratio: cfg.general.me_pool_min_fresh_ratio,
me_reinit_drain_timeout_secs: cfg.general.me_reinit_drain_timeout_secs,
me_hardswap_warmup_delay_min_ms: cfg.general.me_hardswap_warmup_delay_min_ms,
@@ -450,6 +452,7 @@ fn overlay_hot_fields(old: &ProxyConfig, new: &ProxyConfig) -> ProxyConfig {
cfg.general.me_reinit_coalesce_window_ms = new.general.me_reinit_coalesce_window_ms;
cfg.general.hardswap = new.general.hardswap;
cfg.general.me_pool_drain_ttl_secs = new.general.me_pool_drain_ttl_secs;
cfg.general.me_pool_drain_threshold = new.general.me_pool_drain_threshold;
cfg.general.me_pool_min_fresh_ratio = new.general.me_pool_min_fresh_ratio;
cfg.general.me_reinit_drain_timeout_secs = new.general.me_reinit_drain_timeout_secs;
cfg.general.me_hardswap_warmup_delay_min_ms = new.general.me_hardswap_warmup_delay_min_ms;
@@ -823,6 +826,13 @@ fn log_changes(
);
}
if old_hot.me_pool_drain_threshold != new_hot.me_pool_drain_threshold {
info!(
"config reload: me_pool_drain_threshold: {} → {}",
old_hot.me_pool_drain_threshold, new_hot.me_pool_drain_threshold,
);
}
if (old_hot.me_pool_min_fresh_ratio - new_hot.me_pool_min_fresh_ratio).abs() > f32::EPSILON {
info!(
"config reload: me_pool_min_fresh_ratio: {:.3} → {:.3}",

6
src/config/types.rs
View File

@@ -794,6 +794,11 @@ pub struct GeneralConfig {
#[serde(default = "default_me_pool_drain_ttl_secs")]
pub me_pool_drain_ttl_secs: u64,
/// Maximum allowed number of draining ME writers before oldest ones are force-closed in batches.
/// Set to 0 to disable threshold-based draining cleanup and keep timeout-only behavior.
#[serde(default = "default_me_pool_drain_threshold")]
pub me_pool_drain_threshold: u64,
/// Policy for new binds on stale draining writers.
#[serde(default)]
pub me_bind_stale_mode: MeBindStaleMode,
@@ -973,6 +978,7 @@ impl Default for GeneralConfig {
me_secret_atomic_snapshot: default_me_secret_atomic_snapshot(),
proxy_secret_len_max: default_proxy_secret_len_max(),
me_pool_drain_ttl_secs: default_me_pool_drain_ttl_secs(),
me_pool_drain_threshold: default_me_pool_drain_threshold(),
me_bind_stale_mode: MeBindStaleMode::default(),
me_bind_stale_ttl_secs: default_me_bind_stale_ttl_secs(),
me_pool_min_fresh_ratio: default_me_pool_min_fresh_ratio(),