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cumulus-pov-recovery: check pov_hash instead of reencoding data (#2287)

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Collators were previously reencoding the available data and checking the
erasure root.
Replace that with just checking the PoV hash, which consumes much less
CPU and takes less time.

We also don't need to check the `PersistedValidationData` hash, as
collators don't use it.

Reason:
https://github.com/paritytech/polkadot-sdk/issues/575#issuecomment-1806572230

After systematic chunks recovery is merged, collators will no longer do
any reed-solomon encoding/decoding, which has proven to be a great CPU
consumer.

Signed-off-by: alindima <alin@parity.io>
This commit is contained in:
Alin Dima
2023-11-14 10:37:41 +02:00
committed by GitHub
parent 8d2637905b
commit 689b9d91c7
5 changed files with 137 additions and 87 deletions
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cumulus/client/relay-chain-minimal-node/src/collator_overseer.rs
+1 -1
View File
@@ -102,7 +102,7 @@ fn build_overseer(
let network_bridge_metrics: NetworkBridgeMetrics = Metrics::register(registry)?;
let builder = Overseer::builder()
.availability_distribution(DummySubsystem)
.availability_recovery(AvailabilityRecoverySubsystem::with_availability_store_skip(
.availability_recovery(AvailabilityRecoverySubsystem::for_collator(
available_data_req_receiver,
Metrics::register(registry)?,
))