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Feature Gate: Update Hashes per Tick 2 #33601

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bw-solana opened this issue Oct 9, 2023 · 2 comments
Closed

Feature Gate: Update Hashes per Tick 2 #33601

bw-solana opened this issue Oct 9, 2023 · 2 comments
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feature-gate Pull Request adds or modifies a runtime feature gate

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@bw-solana
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bw-solana commented Oct 9, 2023

SIMD

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Description

We need to ramp up required hashes per tick to keep validators busier based on analysis in https://docs.google.com/spreadsheets/d/1NDJZiSFxqbVIi0jn-7I7MrYN2lqP4j9GePZdyPZ1fhI/edit#gid=1060803070

#33600 Adds several discrete values to ramp up the required hashes per tick as these features get activated.

All nodes need to adopt the same hashes per tick at the same time otherwise we will see consensus mismatches due to differing block hashes.

Feature ID

EWme9uFqfy1ikK1jhJs8fM5hxWnK336QJpbscNtizkTU

Activation Method

Single Core Contributor

Deployment Considerations

PoH sleep/hash rate metrics will need to be monitored to ensure analysis on achievable hashes per second and hashes per tick continues to hold up.

Minimum Beta Version

v1.17.2

Minimum Stable Version

v1.17.2

Testnet Activation Epoch

588

Devnet Activation Epoch

636

Mainnet-Beta Activation Epoch

587

@bw-solana bw-solana added the feature-gate Pull Request adds or modifies a runtime feature gate label Oct 9, 2023
@bw-solana bw-solana self-assigned this Oct 9, 2023
@bw-solana
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Activated on testnet at ~2024/01/23 14:10 UTC

The cluster was spending ~19% of the time hashing before and now is spending ~27% of the time, so increasing linearly with hash requirement as expected
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@bw-solana
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Activated on mainnet at ~2024/03/11/2:28PM PT

The cluster was spending ~14% of the time hashing before and now is spending ~20% of the time, so increasing linearly with hash requirement as expected
image

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