Canister Output Message Queue Limits, and IC Management Canister Throttling Limits

paulyoung · October 19, 2022, 4:34am

For #1, a quick search revealed this:

dfinity/ic/blob/a52bb83dd6fc99072db070ccc905478f5ce4bee4/rs/replicated_state/src/canister_state/queues.rs#L30-L30


      
          pub const DEFAULT_QUEUE_CAPACITY: usize = 500;

I also spotted this, which seems like it could further limit the number of messages:

github.com

dfinity/ic/blob/a52bb83dd6fc99072db070ccc905478f5ce4bee4/rs/replicated_state/src/canister_state/queues.rs#L1325-L1330


      
          /// Returns the memory required to push `req` onto an input or output queue.
          /// This is the maximum of `MAX_RESPONSE_COUNT_BYTES` (to be reserved for a
          /// response) and `req.count_bytes()` (if larger).
          pub fn memory_required_to_push_request(req: &Request) -> usize {
              req.count_bytes().max(MAX_RESPONSE_COUNT_BYTES)
          }

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Canister Output Message Queue Limits, and IC Management Canister Throttling Limits

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