| CIP | Title | Author | Status | Type | Created |
|---|---|---|---|---|---|
| 113 | Accelerate Up PoS Finalization | Peilun Li (@peilun-conflux) | Draft | Spec Breaking | 2023-05-29 |
Simple Summary
Make the PoS finalization faster by shortening the PoS consensus round time and the pivot decision signing wait time.
Abstract
Currently the PoS finalization time of Conflux is close to 10 minutes, significantly longer than the confirmation time of PoW and other blockchains. We can make the PoS finalization faster by shortening the PoS consensus round time and the pivot decision signing wait time.
Motivation
Although the PoS finalization is designed as a fail-safe guarantee with a longer confirmation time, it’s still worthwhile to make the extra PoS wait time comparable with the original PoW confirmation time. And the products that utilizes the PoS confirmation (like a high-value transaction or an on-chain light-weight client) will benefit from this optimization.
Specification
The PoS round time is reduced from 60 seconds to 30 seconds. The defer time for validators to wait to sign a PoS-confirmed pivot block is reduced from 50 epochs to 20 epochs.
Rationale
Almost all PoS proposals and votes can be delivered by all validators with in 10 seconds, so in considering the latency, it’s safe to reduce the round time to 30 seconds (leaving 15s for both proposals and votes). About the computing overhead, since most CPU/memory resources are used for PoW, doubling the PoS overhead is still acceptable.
Backwards Compatibility
This is Spec Breaking.
Test Cases
N/A
Implementation
N/A
Security Considerations
N/A
Copyright
Copyright and related rights waived via CC0.