perf: Look up sandbox scheduler priorities per canister - #10279
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`evict_sandbox_processes` only needs the accumulated priority of the canisters that have an active sandbox backend, but currently asks `ReplicatedState` for the priorities of *all* canisters on the subnet, materializing a fresh `BTreeMap<CanisterId, AccumulatedPriority>` on every eviction pass. Replace the bulk lookup with per-id `canister_state(id)` / `canister_priority(id)` calls inside the existing `backends.iter()` loop. Behaviour is unchanged: a missing canister still falls through to `AccumulatedPriority::MIN`. With the sandbox controller migrated, `canister_accumulated_priorities()` has no remaining callers, so drop it (and its now-unused `AccumulatedPriority` import) from `ReplicatedState`. Co-authored-by: Cursor <cursoragent@cursor.com>
schneiderstefan
approved these changes
May 22, 2026
alin-at-dfinity
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May 22, 2026 17:03
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evict_sandbox_processesonly needs the accumulated priority of the canisters that have an active sandbox backend, but currently asksReplicatedStatefor the priorities of all canisters on the subnet, materializing a freshBTreeMap<CanisterId, AccumulatedPriority>on every eviction pass.Replace the bulk lookup with per-id
canister_state(id)/canister_priority(id)calls inside the existingbackends.iter()loop. Behaviour is unchanged: a missing canister still falls through toAccumulatedPriority::MIN.With the sandbox controller migrated,
canister_accumulated_priorities()has no remaining callers, so drop it (and its now-unusedAccumulatedPriorityimport) fromReplicatedState.