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Req/res optimization for statement distribution (#2803)

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* Wip

* Increase proposer timeout.

* WIP.

* Better timeout values now that we are going to be connected to all nodes. (#2778)

* Better timeout values.

* Fix typo.

* Fix validator bandwidth.

* Fix compilation.

* Better and more consistent sizes.

Most importantly code size is now 5 Meg, which is the limit we currently
want to support in statement distribution.

* Introduce statement fetching request.

* WIP

* Statement cache retrieval logic.

* Review remarks by @rphmeier

* Fixes.

* Better requester logic.

* WIP: Handle requester messages.

* Missing dep.

* Fix request launching logic.

* Finish fetching logic.

* Sending logic.

* Redo code size calculations.

Now that max code size is compressed size.

* Update Cargo.lock (new dep)

* Get request receiver to statement distribution.

* Expose new functionality for responding to requests.

* Cleanup.

* Responder logic.

* Fixes + Cleanup.

* Cargo.lock

* Whitespace.

* Add lost copyright.

* Launch responder task.

* Typo.

* info -> warn

* Typo.

* Fix.

* Fix.

* Update comment.

* Doc fix.

* Better large statement heuristics.

* Fix tests.

* Fix network bridge tests.

* Add test for size estimate.

* Very simple tests that checks we get LargeStatement.

* Basic check, that fetching of large candidates is performed.

* More tests.

* Basic metrics for responder.

* More metrics.

* Use Encode::encoded_size().

* Some useful spans.

* Get rid of redundant metrics.

* Don't add peer on duplicate.

* Properly check hash

instead of relying on signatures alone.

* Preserve ordering + better flood protection.

* Get rid of redundant clone.

* Don't shutdown responder on failed query.

And add test for this.

* Smaller fixes.

* Quotes.

* Better queue size calculation.

* A bit saner response sizes.

* Fixes.
This commit is contained in:
Robert Klotzner
2021-04-09 23:30:12 +02:00
committed by GitHub
parent 69bd6d8ef2
commit 305375e1e4
19 changed files with 1711 additions and 190 deletions
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polkadot/node/core/proposer/src/lib.rs
+6 -2
View File
@@ -40,8 +40,12 @@ use sp_transaction_pool::TransactionPool;
use prometheus_endpoint::Registry as PrometheusRegistry;
use std::{fmt, pin::Pin, sync::Arc, time};
/// How long proposal can take before we give up and err out
const PROPOSE_TIMEOUT: core::time::Duration = core::time::Duration::from_millis(2500);
/// How long proposing can take, before we give up and err out. We need a relatively large timeout
/// here as long as we have large payload in statement distribution. Assuming we can reach most
/// nodes within two hops, we will take about 2 seconds for transferring statements (data transfer
/// only). If necessary, we could be able to reduce this to 3 seconds. To consider: The lower the
/// riskier that we will not be able to include a candidate.
const PROPOSE_TIMEOUT: core::time::Duration = core::time::Duration::from_millis(4000);
/// Custom Proposer factory for Polkadot
pub struct ProposerFactory<TxPool, Backend, Client> {